Water-cased printing dye, set of reaction liquid and water-based printing dye and image formation method

FIELD: polygraphy.

SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.

EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.

18 cl, 1 tbl, 10 ex

 

The technical field

The present invention relates to aqueous ink used in the system, including the reaction liquid and the aqueous ink, and used to form images, a set of reaction liquid and the aqueous ink, and a method of forming the image.

The level of technology

(Dye)ink jet recording is a printing method comprising the ejection of small droplets of printing ink with a view to their application to media, printed image, such as paper, thereby effecting printing, characterized in that with an inexpensive machine can be printed at high speed with high resolution and high quality images, and has become in recent years, widely used as a tool capable of easily forming a high-quality color images. However, there is a great need in the formation of higher-quality color images.

On the other hand, until now, has made various proposals on the formation of higher-quality color images. For example, it was proposed to use black printing ink which is capable of thickening or aggregation by interacting with salt and a color ink containing such a salt, in combination, p is the best in the high-quality color images with high density and free from diffusion of the dye (blurring due to mixing between different colors) (see, for example, Japanese patent application laid No. N6-106735). In other words, according to this method 2 printing inks whose properties are different, i.e. the colored paint containing salt and representing a second fluid, and black ink constituting the first liquid used to form the imprint, the components of these two liquids are subjected to interaction with obtaining aggregates of dyes, thereby forming images of good quality. Specifically, as the salt using salt ion polyvalent metal.

There have also been various proposals regarding the formation of high-quality color images by use of the set consisting of a combination of liquid compositions that do not contain dye and containing printing ink, i.e. the 2 liquids with different properties (see, for example, Japanese patent published application No. H9-207424, H11-78212, 2000-44855 and H9-286940).

The authors of the present invention conducted further extensive research among the proposals sets of printing inks containing salts of polyvalent metals. In the result, it was found that printing can be carried out by a printing method described in Japanese patent laid bids No. N6-106735 and H11-78212, providing high-quality cvetni the images, having a high image density and free from diffusion of the ink. However, such a printing method creates a new problem because of the high reactivity.

More specifically, the reaction is almost completed at that time (from the moment of contact to several hundred milliseconds), when the reaction liquid comes into contact with printing ink, since the reactivity is too high. This causes the color of the material, which came into interaction with the reaction liquid is left on the surface layer of the print medium. Needless to say that the dye can be in some cases removed by friction of the printed area. This phenomenon may cause problems for two-sided printing.

To solve this problem, according to the descriptions in Japanese patent laid bids No. H9-207424, 2000-44855 and H9-286940, it was found that in printing ink may be added a substance that increases its binding capacity, with controlled penetration of the colorant on the print medium can be formed film, affecting the abrasion on the site, with print.

On the other hand, it is important to ensure the ejection of printing ink in the form of stable droplets from the small nozzles on the ink-jet for isibaya (print) head for the stable formation of high-quality, recorded crashcontrol way of images. In particular, the important point is to prevent curing of the printing ink in the holes of the ink-jet print head due to drying of the paint in the holes to obtain a stable ink-jet printing. Such a printing ink containing a substance having the above-mentioned binding ability, causes difficulties in this respect. More specifically, the emulsion resin with low hydrophilicity or the like, representing a substance having a binding ability, stick to the holes or the like ink-jet printhead, thereby causing, in some cases, plugging holes.

The invention

The aim of the present invention to provide an aqueous ink, a set of reaction liquid and the aqueous ink, and method of forming images, the use of which may be obtained from sustainable Crassostrea printing regardless of the conditions printed on the print medium, the image having essentially uniform abrasion resistance, can be formed, no contamination of the image even for two-sided printing and can be obtained a high-quality image with greater clarity in a contour part of the image that is free from races of the junctures of paint.

During the study, the authors present invention have found a solution to the above problems inherent in the known methods consists in the fact that at a certain regulation of the reactivity between the reaction liquid and the aqueous printing ink containing a dispersion of a pigment dispersed using a dispersant is an anionic polymer, the adhesion between aggregates of the dye and the surface of the print medium, and the abrasion resistance of the printed area after printing on the print medium can be easily improved. This discovery allowed us to complete the implementation of the present invention.

Thus, according to the present invention was developed water printing ink used in the system, which uses the reaction liquid containing at least one polyvalent metal, and water printing ink containing at least a dispersion of a pigment in which the pigment is dispersed using a dispersant is an anionic polymer, to form the image, with water printing ink meets the following requirements.

For (A), meaning the absorption at the wavelength of maximum absorption in the visible range (wavelength 550 nm in the case of use as a pigment carbon black) a mixture of 50 g 800-fold diluted water is on the solution of the reaction liquid and 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks, filtered through a filter with pore size 0.2 μm after 15 minutes, and (C), meaning the absorption at the wavelength of maximum absorption in the visible range of a mixture of 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks and 50 g of pure water (a) and (b) satisfy the following relation:

of 0.3 < (A)/(B) < 0,85.

In accordance with another variant aqueous printing ink according to the present invention, the dispersant is an anionic polymer contained in the aqueous printing ink having the above composition may include a component that regulates the interaction of the aqueous ink and a polyvalent metal. In particular, the component that regulates the interaction with the polyvalent metal may be a nonionic group-Deputy. More specifically, the dispersant is an anionic polymer can be a polymer containing as a non-ionic group is a substituent of at least a monomer of formula (1) in the structural element, while the share of the structural element can be from 5 to 50 wt.% of the total number of polymer

in which R1represents hydrogen or methylgroup, R2represents -(CH2CH2O)nR3(n is an integer from 1 to 30), and R3represents hydrogen or methylgroup.

In accordance with CL is blowing option aqueous printing ink according to the present invention dispersant - anionic polymer in the above composition may include at least one compound selected from a monomer of formula (2) and monomer of the formula (3) as a structural link

in which R4represents hydrogen or methylgroup, and R5represents phenyl or afterglow, and

in which R6represents hydrogen or methylgroup, and R7represents a linear, branched or alicyclic alkyl or alkenylphenol group containing from 6 to 18 carbon atoms, or benzerrou.

Preferably, in the above composition of the anionic dispersant polymer include at least one compound selected from a monomer of formula (2) and monomer of the formula (3) as structural element, and the proportion of the structural element ranged from 20 to 80 wt.% from the total amount of the polymer. Also it is preferable to use a dispersion of a pigment, providing a dispersion of 100 parts (wt.) pigment with the dispersant is an anionic polymer in an amount of from 20 parts (wt.) to 200 parts (wt.).

In accordance with a further variant of the aqueous ink according to the present invention when used as a dispersant is an anionic polymer of at least two anionic polymers (dal who first called "polymer (I)and polymer (II)") polymer (I) may include at least one connection, selected from a monomer of the formula (4) and monomer of the formula (5), as a structural element, and the proportion of the structural element can be from 50 to 80 wt.% of the total amount of polymer (I)

formula (4): CH2=C(R8)-R9,

in which R8represents hydrogen or methylgroup, and R9represents phenyl or afterglow, and

formula (5): CH2=C(R10)COOR11,

in which R10represents hydrogen or methylgroup, and R11represents a linear, branched or alicyclic alkyl or alkenylphenol group containing from 4 to 18 carbon atoms, or benzerrou.

In addition, the polymer (I) preferably includes styrene as a structural element.

On the other hand, the polymer (II) may be a polymer containing at least a monomer represented by formula 6, as a structural element, while the share of the structural element can be from 20 to 80 wt.% of the total amount of polymer (II)

in which R12represents hydrogen or methylgroup, and R13represents a linear or branched altergroup containing less than 4 carbon atoms.

In accordance with another variant, the aqueous ink according to the present invention, the polymer (II) may include m is the number containing non-ionic group-Deputy as a structural element, more specifically, a monomer represented by the formula (7), as a structural element, and the proportion of the structural element can be from 5 to 50 wt.% of the total amount of polymer (II)

in which R14represents hydrogen or methylgroup, R15-(CH2CH2O)nR16(n is an integer from 1 to 30), a R16represents hydrogen or methylgroup.

In addition, the total mass of the polymer (I) and polymer (II) may preferably be from 20 to 200 parts (wt.) to 100 parts (wt.) pigment, and the polymer (I) to the polymer (II) may range from 10 to 300 parts (wt.) to 100 parts (wt.) polymer (I).

According to the present invention has also developed a set from the reaction liquid and the aqueous ink, in which the reaction liquid contains at least a polyvalent metal, and water printing ink is a dye having any of the above compositions.

According to the present invention has also developed a method of image formation comprising the use of the above set from the reaction liquid and the aqueous ink and the application of the reaction liquid in an amount of from 0.5 to 5 g/m2on the media.

In accordance with one the m variant of the method of image formation according to the present invention, a method of image formation for forming an image on a print medium, comprising the stages of (i) applying to the medium for printing method ink-jet printing, water printing ink, which is part of a set from the reaction liquid containing at least a polyvalent metal, and water printing ink containing at least a dispersion of a pigment in which the pigment is dispersed using a dispersant is an anionic polymer; and (ii) drawing on the media reaction liquid, which is part of a set from the reaction liquid containing at least a polyvalent metal, and water printing ink containing at as the dispersion of the pigment in which the pigment is dispersed using a dispersant is an anionic polymer, in which stage (i) is carried out after the completion of the binding reaction liquid media at stage (ii).

According to the present invention steady Crassostrea printing can be obtained regardless of the printing conditions, and may be formed image having essentially uniform and the abrasion resistance of the print medium. In addition, there may be obtained a high-quality image with greater clarity in a contour part of the image, and free from diffusion of the paint.

A brief description of che is the intellectual property

Figa, 1B, 1C and 1D illustrate the method, after the droplet of ink ejected from the head, faced the media.

Figa, 2B and 2C illustrate the method after the droplet of the ink ejected from the head, faced the media.

Figure 3 is a schematic perspective view illustrating an example of ink-jet printing machine.

Figure 4 is a front view in section of the remaining liquid of the composition, representing part of which is in ink-jet printing machine is shown in figure 3.

Figure 5 is a schematic side view in section, illustrating the state when the liquid composition was filed in crashcontrol printing machine, is shown in figure 3.

Preferred embodiments of the image

The present invention is described below in more detail in the form preferred options.

According to the present invention the aqueous printing ink, comprising the dispersant is an anionic polymer containing a component for regulating abilities to chemical interaction between the reaction liquid and the printing ink within certain limits, and the reaction liquid used in combination, thereby preventing the accumulation of aggregates of pigment on the surface of the print medium, and salaamat settled between aggregates of the dye and the surface of the print medium, as well as the abrasion resistance of the printed area after printing on the print medium can be easily improved. It is believed that the reason why the above effect is provided by the above-described composition according to the present invention is that the reaction liquid and the ink are in the media in the following condition.

Figa-1D are conceptual views illustrating the state of the collision of droplets of printing ink 1 ejected from the head section 2 of the print medium, on which was applied to the reaction liquid, prior to the formation of aggregates (prints) of the pigment particles 3, i.e. of the colorant on the print medium.

A droplet of printing ink 1 penetrates into the media in order 1A → 1V → 1C → 1D in the direction of the depth of the media after her collision with the media with the formation of aggregates as a result of interaction of the pigment with 3 polyvalent metal. When the regulation of the activity of the chemical interaction between the reaction liquid and the aqueous printing ink in the framework according to the present invention, a droplet of printing ink 1 is subjected to interaction, while gradually penetrating in the direction of the depth of the print medium with the formation of aggregates. Accordingly, the units are not l is localized on the surface of the print medium, and present in the state, released at a certain depth from the surface of the print medium.

In other words, the ability to chemical interaction between the reaction liquid and the aqueous printing ink is adjusted within certain limits according to the present invention, the interaction between the dispersion of a pigment and a polyvalent metal occurs after the collision of droplets of printing ink 1 with the surface of the print medium (1B). At the same time a certain amount of dispersion of the pigment interacts with polyvalent metal close to the surface of the print medium, and the remaining amount of dispersion of the pigment continues to penetrate further in the direction of the depth of the media, interacting with the polyvalent metal, which is deeper than the polyvalent metal is subjected to interaction in condition 1B (1C). In addition, the same process also occurs in condition 1C, changing it to 1D.

Figa-2C illustrate in more detail the formation of aggregates that are common to a certain depth from the surface 4 of the print medium. After the droplet of the ink hits the media, on the surface 4 of the print medium, the reaction begins aggregation of pigment 3 with polyvalent metal 5 with the penetration of printing the ink (condition 2A). When the pigment 3 reaches polyvalent metal 5, which is located (in the drawings) at the field level the surface layer of the print medium, is the aggregation of the pigment 3 with polyvalent metal 5. At this time, because of the chemical interaction between the polyvalent metal 5 and pigment 3 is regulated, polyvalent metal 5 in the vicinity of the surface, interacts with a certain amount of dispersion of the pigment. Since the polyvalent metal 5, reacted with the pigment dispersion, reduces its reactivity, the entire pigment 3 does not interact consistently close to the plot of the surface layer of the print medium. In other words, about polyvalent metal 5, near the area of the surface layer of the print medium are aggregates formed by the interaction of a certain amount of dispersion of pigment and unreacted dispersion pigment, providing the state 2B. Then unreacted dispersion of the pigment penetrates further in the direction of the depth of the media and reaches a polyvalent metal located inside the media (in the drawings), forming aggregates and thereby changing the state on 2C. Such partial aggregation and infiltration are repeated, forming aggregates of pigment (prints) in the state of propagating, as shown in fig.1D, at a certain depth from the surface 4 of the media.

The big difference between the system including the famous water printing ink and the reaction liquid used to form the image, and the present invention is that the abrasion resistance of the obtained fingerprint improving the regulation of chemical interaction between the dye in the printing ink and the reactive component in the reaction liquid, even when the substance (except for the dispersant, ensuring the dispersion stability of the pigment)having a binding ability is not contained in the printing ink.

In a system in which imaging is used aqueous printing ink and the reaction liquid, the ability to chemical interaction between the dye in the printing ink and the reactive component in the reaction liquid increases even more, causing rapid formation of aggregates with the aim of improving the resistance to flowing and ability to commit the resulting picture. For example, the interaction of a printing ink containing a copolymer of styrene and acrylic acid, having an acid number of about 210, from the reaction liquid containing the calcium ion, with relative activities is but strong reactivity against the print medium, as described in the examples of Japanese patent published application No. H11-78212, the ability to chemical interaction between these 2 liquids too high, because the aggregates of dye undesirable manner distributed over the area of the surface layer of the print medium, not reaching the level of resistance to abrasion provided by the present invention. As noted in Japanese patent application laid No. H9-286940, there are many sentences in which the details of the presence of the anionic polymeric dispersant in the printing ink is not described. Because the objective of such known in the field of documents, for example, Japanese patent published application No. H11-78212, is to improve the ability to chemical interaction between the dye in the printing ink and the reaction component in the reaction liquid in order to quickly obtain aggregates, the aggregates of the dye are not necessarily present on the site in the surface layer of the print medium that does not allow you to reach the level of resistance to abrasion provided by the present invention.

On the other hand, when using aqueous printing ink according to the present invention and the reaction liquid for forming images, the ability to chemical interaction between them is regulated with high art is singing exactly that way, to provide somewhat weaker reactivity in comparison with the ability to chemical interaction between the printed ink and the reaction liquid so as to prevent the localization of the aggregates of the dye on the area of the surface layer of the media and ensure their distribution to a certain depth from the land surface layer of the print medium. In the result, it was possible to further improve the abrasion resistance of the obtained print while keeping the blurring on the same level as on the printed product obtained using known printing inks and the reaction liquid to form the image.

The main point of the present invention is that a method was found regulation of the reactivity between aqueous printing ink and reaction liquid, which hitherto had not been considered as a means of improving the resistance to abrasion when using a system with two liquids.

The authors of this invention have conducted more in-depth research. As a result, they concluded that when used for imaging the reaction liquid and the printing ink according to the present invention, which is precisely regulated so as to ensure the process somewhat weaker ability to chemical interaction between the printed ink and the reaction liquid, provides the preferred presence of the more reactive component at the site in the surface layer of the print medium in a state before application of the ink onto the print medium due to the speed of penetration of the fluid and the rate of formation of aggregates. In other words, it was found that the distribution of units at a certain depth from the land surface layer of the print medium, which is the main point of the present invention, it can be easier achieved by specifying the number and speed of penetration is used the reaction liquid, the period of time between application of the reaction liquid media and use it printing ink, etc.

Based on the above, according to the main characteristic of the present invention, namely, that the ability to chemical interaction between the reaction liquid and the aqueous printing ink containing a dispersant (anionic polymer is regulated within certain limits, it becomes possible to print a sustainable image, regardless of the conditions of printing, is more effective improving the abrasion resistance and, in addition, effectively prevents common problems such as pollution image by double printing.

Described below is relevant to the respective components, included in the aqueous ink and the reaction liquid according to the present invention, etc.

The ability to chemical interaction between the reaction liquid and the aqueous printing ink

The ability to chemical interaction between the reaction liquid and the aqueous printing ink according to the present invention substantially is controlled so as to satisfy the following conditions.

For values of (A), which means the absorption at the maximum absorption wavelength in the visible range (wavelength 550 nm in the case of use as a pigment carbon black) a mixture of 50 g 800-fold diluted aqueous solution of the reaction liquid and 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks, filtered through a filter with pore size 0.2 μm through 15 minutes after receiving the mixture, and values (), which means the absorption at the maximum absorption wavelength in the visible range of a mixture of 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks and 50 g of pure water, the values of (a) and (b) satisfy the following relation:

of 0.3 < (A)/(B) < 0,85.

If the value of (A)/(b) is less than 0.3, the aggregates of the pigment is localized on the surface of the print medium, therefore, the abrasion resistance of the resulting footprint is reduced and at dust the individual printing in some cases, contamination may occur in the image. On the other hand, if the value (A)/(b) is more than 0.85, the ability to chemical interaction between the reaction liquid and the aqueous printing ink is too low, so in some cases, high-quality color image with high density and free from diffusion of the dye, which is usually the advantage of two-fluid system, cannot be obtained.

The components of the aqueous ink

Disperser, which represents an anionic polymer

(A) the Use of a dispersant based on a single polymer

The dispersant is a polymer preferably is a polymer or copolymer of the component monomer comprising a radically curable unsaturated bond, such as acrylic resin or styrene/acrylate resin from the viewpoint of General applicability and implementation of the functional configuration of the dispersant. In particular, in the present invention, the dispersant preferably contains a component that regulates the ability to chemical interaction between the reaction liquid and the printing ink within certain limits, to regulate the penetration of the dye in the media, in addition to the anionic component, providing unionist which reacts with the polyvalent metal. Examples of the component, regulating with osobnosti to chemical interaction between the reaction liquid and the printing ink within certain limits, include non-ionic group substituents having high hydrophilicity, such as hydroxyl group and ether group, as in the case of a simple ester of polyethylene. For example, it is preferable to use a complex (meth)acrylic ester having polietilenglikolya Deputy represented by the formula (1), as a component of regulating the ability to chemical interaction between the reaction liquid and the printing ink within certain limits, since the chemical reactivity in relation to the polyvalent metal can be freely controlled by adjusting the level of the copolymerization between the components of the monomer or change the chain length (the repeating unit) simple ether of polyethylene ether.

It is believed that the reason the ability to chemical interaction between the reaction liquid and the printing ink may be adjusted due to the presence of the monomer containing high hydrophilic non-ionic group-Deputy, dispersant polymer, is as follows. As the monomer having anyoneto in the solution gives the reaction of collaboration in contact with the monomer having nationally, for example ion polyvalent metal, although reactivity and varies more or less, it is very difficult ODA is to divide reactivity between aqueous printing ink and the reaction liquid according to the present invention. On the other hand, a monomer that does not have Ionescu in solution, i.e. the monomer, which is non-ionic, does not interact even when in contact with the monomer having nationally, such as ion polyvalent metal. Accordingly, gently can be adjusted by the ability to chemical interaction between aqueous printing ink and the reaction liquid according to the present invention.

Due to the inclusion of the monomer containing high hydrophilic non-ionic group-Deputy, dispersant polymer, improves the abrasion resistance of images formed by using the reaction liquid and the aqueous ink, which is a new effect. It is believed that the reason for improved abrasion resistance, is the following. When the reaction liquid comes into contact with the printed ink on the print medium, the dispersant is a polymer contained in the printing ink, also interacts with the ion polyvalent metal contained in the reaction liquid, forming a film by associating them with each other. Since, however, the dispersant is a polymer that forms a film in the reaction with the ion polyvalent metal has a high reactivity, it is very difficult to form a film in the form with the inclusion of the pigment. As the monomer, sod is Rashi nonionic group-Deputy, which does not cause reactions even when in contact with the reaction liquid does not form a film at the time of applying printing ink to the print medium, and slowly forms a film as evaporation or penetration of liquid components in the media, the film is formed in the form with the inclusion of the pigment. It is therefore considered that the dispersant is a polymer containing a monomer that includes a non-ionic group-Deputy, better improves abrasion resistance than the dispersant is a polymer that does not include the above-mentioned monomer.

Specific examples of the other radically curable monomers include complex (meth)acrylic esters such as methyl acrylate, acrylate, isopropylacetate, n-propylacetate, n-butyl acrylate, tert-butyl acrylate, benzoylacrylate, methyl methacrylate, ethyl methacrylate, isopropylacetate, n-propylbetaine, n-butylmethacrylate, isobutylacetate, tert-butylmethacrylate, tridecylamine and bezelmaterial; styrene monomers such as styrene, α-methylsterol, o-methylsterol, m methylsterol, p-methylsterol and p-tert-butalbiral; complex itaconate esters, such as benzylmalonate; complex maleic esters, such as dimethylmaleic; complex fumaric esters, such as dimethylfumarate, and, in addition, Acrylonitrile, Methacrylonitrile and vinyl acetate. These monomers can be ispolzovaniya individually or in any combination.

Anionic component, interacting with the polyvalent metal, get, using a monomer comprising anionic group, as copolymerizing component.

Examples of the monomer containing an anionic group include monomers containing carboxyl group such as acrylic acid, methacrylic acid, crotonic acid, etakrinova acid, popilaruloba acid, isopropylacrylamide acid, taconova acid and fumaric acid and their salts; monomers containing a sulfonic group, such as styrelseledamot acid, 2-propylacetamide sulfonic acid, 2-ethylsulfonyl methacrylic acid and butylacrylamide acid and their salts; monomers containing phosphonic group, such as 2-ethylphosphonate methacrylic acid and 2-ethylphosphonate acrylic acid. Of these monomers, particularly preferred is the use of acrylic acid and methacrylic acid. Such monomers can be used individually or in any combination.

Acid value of the anionic polymer is preferably from 100 to 400. If the acid number is below 100, in some cases, the polymer may be dissolved in water or a dispersion stability of the dispersion of a pigment dispersed with a polymer, may be low and cause coord who aggregates. On the other hand, if the acid number exceeds 400, the dispersion stability of the dispersion of a pigment dispersed with a polymer having such an acid number increases, therefore, the reactivity with respect to the polyvalent metal may be reduced, thus the dispersion of the pigment can penetrate more deeply in the media, in some cases reducing the density of the image.

Srednevekovaja molecular weight dispersant is an anionic polymer is preferably from 2,000 to 50,000. If srednevekovaja molecular weight below 2000, the formation of film in such a polymer becomes insufficient, and therefore the abrasion resistance in some cases, it may be insufficient. On the other hand, if srednevekovaja molecular weight exceeds 50,000, the viscosity of the obtained ink increases, so in some cases it throwing when performing printing this printing ink using the ink-jet system may be unstable.

The dispersant is an anionic polymer preferably is a copolymer of at least one compound selected from a monomer of formula (2) and monomer of the formula (3), in addition to the complex (meth)acrylic ether containing polietilenglikolya Deputy represented by the formula (1), and radically on americamy monomer. Examples of the monomer of formula (2) include styrene, α-methylsterol, o-methylsterol, m methylsterol, p-methylsterol and p-tert-butalbiral. Examples of the monomer of formula (3) include 2-ethylhexyl(meth)acrylate, n-hexyl(meth)acrylate, sec-hexyl(meth)acrylate, n-octyl(meth)acrylate and benzyl(meth)acrylate.

Dispersion polymers containing the above monomers as structural units, is preferred because the dispersibility of the pigment is improved, and the dispersion stability of the obtained dispersion of the pigment to the influence of external factors such as heat, etc. over time increases. Of these monomers, it is preferable to use styrene as the dispersion stability of the resulting dispersion of pigment over time improves, and the ejection stability when performing printing using ink-jet system becomes stable.

The content of at least one compound selected from a monomer of formula (2) and monomer of the formula (3), is preferably from 20 to 80 wt.%. If the content is less than 20 wt.% or exceeds 80 wt.%, the sufficient dispersion stability of the resulting dispersion of a pigment or a sufficient ejection stability when it is used in propelling the paint in some cases may not be achieved.

Di is purgator-polymer is preferably used in an amount of from 20 to 200 parts (wt.) to 100 parts of pigment. If the content of the dispersant used is less than 20 parts, the film-forming ability of the polymer becomes insufficient, and therefore the abrasion resistance of the obtained fingerprint also becomes insufficient. On the other hand, if the content exceeds 200 parts, the amount of polyvalent metal necessary for the implementation of adequate response aggregation of the obtained pigment dispersion with polyvalent metal increases, the viscosity of the obtained ink increases with the content of the dispersant, therefore, in some cases, when using a printing ink for printing using ink-jet system, the ejection may be unstable.

(C) the Use of dispersant on the basis of two polymers

Anionic polymer, causing strong reactions aggregation with polyvalent metal and the anionic polymer, regulatory response aggregation, used in combination as the two anionic polymer contained in the aqueous printing ink, while the penetrating ability of the dye contained in the aqueous printing ink to the print medium can also be adjusted.

It is only necessary that the dispersion of the pigment contained in the aqueous printing ink was dispersed at least an anionic polymer, causes the criterion strong aggregation reaction with polyvalent metal. However, both of the polymer can be used as a dispersant. As the two dispersant polymer can be preferably used polymers or copolymers of the component monomer comprising a radically curable unsaturated bond, such as acrylic resin or styrene/acrylate resin, from the viewpoint of General applicability and implementation of the functional configuration of the dispersant.

The polymer (I) is a copolymer radically curable monomer, such as at least one compound selected from a monomer of the formula (4) and monomer of the formula (5), with anionic radically polymerized monomer, the content of at least one compound selected from a monomer of the formula (4) and monomer of the formula (5)representing the structural units ranges from 50 to 80 wt.%. As described above, the polymer contains a monomer having a high hydrophobicity, hydrophobic interaction occurs through the reaction of polyvalent metal with an anionic group by dispersion pigment at least the polymer (I), thus providing enough capacity for aggregation of chemical interaction between the salt of polyvalent metal and a dispersion of the pigment. The dispersion stability of the pigment dispersion over time is also improved./p>

Needless to say, the polymer (II) may contribute to the dispersion of the pigment with the polymer (I) a dispersion of a pigment in printing ink. If the content of the structural element consisting of at least one compound selected from a monomer of the formula (4) and monomer of the formula (5)representing the structural links is below 50 wt.% or above 80 wt.%, sufficient dispersion stability of the pigment dispersion is not achieved, therefore, sufficient stability throwing in some cases can also be achieved by the use of dispersion in the emitted jet of paint.

Examples of the monomer of formula (4)represents a structural unit of the anionic polymer include styrene monomers such as styrene, α-methylsterol, o-methylsterol, m methylsterol, p-methylsterol and p-tert-butalbiral. Examples of the monomer of formula (5) include a complex of methacrylic esters, such as butyl(meth)acrylate, benzyl(meth)acrylate, 2-ethylhexyl(meth)acrylate and n-hexyl(meth)acrylate. Of these monomers, it is preferable to use styrene. The use of styrene as a monomer of the formula (4) is preferable because not only the dispersion stability of the resulting dispersion of the pigment is improved over time, but also increases the stability of ejection when the OS is enjoyment of printing using the resulting printing ink in the ink-jet system.

Examples of anionic radically curable monomer include monomers containing carboxyl group such as acrylic acid, methacrylic acid, crotonic acid, etakrinova acid, popilaruloba acid, isopropylacrylamide acid, taconova acid and fumaric acid and their salts; monomers containing a sulfonic group, such as styrelseledamot acid, 2-propylacetamide sulfonic acid, 2-ethylsulfonyl methacrylic acid and butylacrylamide acid and their salts, and also monomers containing phosphonic group, such as 2-ethylphosphonate methacrylic acid and 2-ethylphosphonate acrylic acid. Of these monomers, particularly preferred are acrylic acid and methacrylic acid. Can be used at least one of these monomers.

The polymer (II) is a copolymer radically curable monomer represented by the formula (6), with anionic, radically curable monomer, in which the content of the monomer of formula (6)represents a structural unit that ranges from 20 to 80 wt.%. If the content of the monomer of formula (6) exceeds 80 wt.%, in some cases, the solubility of the copolymer in the aqueous medium can be reduced or dispersion stability of the pigment dispersion in the received pecan is th ink can be reduced. If, on the other hand, the content is less than 20%, the ability to chemical interaction between the reaction liquid and the resulting printing ink in some cases may not be regulated. Examples of the monomer of formula (6) include propyl(meth)acrylate, ethyl(meth)acrylate and methyl(meth)acrylate. As anionic, radically curable monomer may be used the same monomer as the monomer mentioned in connection with the polymer (I). According to another preferred variant, the polymer (II) as a structural element preferably includes a monomer containing a non-ionic group-Deputy. The polymer (II) comprises a monomer containing a non-ionic group-Deputy, resulting in abrasion resistance of the obtained fingerprint is improved as described above. In addition, the polymer (II) preferably is a copolymer consisting of at least radically curable monomer represented by the formula (7), and anionic, radically curable monomer, the content of the monomer of formula (7)represents a structural unit that ranges from 5 to 50 wt.%.

If the content of the structural element consisting of a monomer of the formula (7), less than 5 wt.%, action regulation abilities to chemical interaction between the polyvalent metal and what isperia pigment in the resulting aqueous printing ink may in some cases be insufficient. On the other hand, if the content exceeds 50 wt.%, the dispersion stability of the pigment dispersion increases, so the ability to chemical interaction with the polyvalent metal in some cases may be reduced. As anionic, radically curable monomer may be used in at least one of the monomers mentioned in the description of the polymer (I).

Srednevekovaja molecular weight polymers (I) and (II) is preferably from 2,000 to 50,000. If srednevekovaja molecular weight below 2000, the formation of a film of this polymer becomes insufficient, and therefore the abrasion resistance in some cases, it may be insufficient. On the other hand, if srednevekovaja molecular weight exceeds 50,000, the viscosity of the obtained ink increases, so in some cases, expulsion may be unstable when performing printing this printing ink in the ink-jet system.

The polymer (I) and polymer (II) preferably used in an amount of from 20 to 200 parts (wt.) in General, per 100 parts of pigment. If the amount used is less than 20 parts (wt.), the formation of films of such polymers is insufficient and, therefore, the abrasion resistance in some cases also becomes insufficient. On the other hand, if if the esto exceeds 200 parts (wt.), the amount of polyvalent metal necessary for the implementation of adequate response aggregation of the obtained pigment dispersion with polyvalent metal increases, the viscosity of the obtained ink increases with the content of the dispersant, therefore, in some cases, when using a printing ink for printing using ink-jet system, the ejection may be unstable.

The ratio of polymer (II) to the polymer (I) is preferably from 10 to 300 parts (wt.) to 100 parts (wt.) polymer (I). If the content of polymer (II) is less than 10 parts (wt.) to 100 parts (wt.) polymer (I), then there is the probability of the aggregation reaction with polyvalent metal, because the dispersion of the pigment tends to be close to the surface of the print medium, and the abrasion resistance of the obtained fingerprint tends to decrease. On the other hand, if this content exceeds 300 parts (wt.), the aggregation reaction with polyvalent metal becomes unlikely, therefore, in some cases, the dispersion of the pigment can penetrate deep into the media, reducing the density of the resulting print.

Pigment

Examples of pigments that can be used in aqueous printing inks according to the present invention, VK is ucaut carbon black and organic pigments. Can be used one of the various pigments or a combination of two or more of them.

Carbon black

Specific examples of carbon black include carbon black pigments such as furnace black, lamp black, acetylene black and a gas channel carbon black. Examples of suitable carbon black pigments include Raven 7000, Raven 5750, Raven 5250, Raven 5000, Raven 3500, Raven 2000, Raven 1500, Raven 1250, Raven 1200, Raven 1190 ULTRA-II, Raven 1170, and Raven 1255 (all products Colombian Carbon Co.) Black Pearls L, Regal 400R, Regal 330R, Regal 660R, Mogul L, Monarch 800, Monarch 880, Monarch 900, Monarch 1000, Monarch 1100, Monarch 1300, Monarch 1400, and Valcan XC-72R (all products of Cabot Co.), Color Black FW1, Color Black FW2, Color Black FW2V, Color Black FW18, Color Black FW200, Color Black S150, Color Black S160, Color Black S170, Printex 35, Printex U, Printex V, Printex 140U, Printex 140V, Special Black 6, Special Black 5, Special Black 4A and Special Black 4 (all products of Degussa AG), and No. 25, No. 33, No. 40, No. 47, No. 52, No. 900, No. 2300, MCF-88, MA600, MA7, MA8 and MA100 (all products of MITSUBISHI CHEMICAL CORPORATION). However, the present invention is not limited to the above-mentioned pigments, and can be used any carbon black, known in the art. Small magnetic particles, such as magnetite and ferrite, titanium black and the like, can also be used as black pigments.

Organic pigment

Specific examples of organic pigments include insoluble azo pigments such as TB Red, TB Maroon, Hansa Yellow, Benzidine Yellow and Pyrazolone Red; soluble azopi the cops, such as Lithol Red, Helio Bordeaux, Pigment Scarlet and Permanent Red 2B; derivatives VAT dyes such as alizarin, indanthren and Thioindigo Maroon, phthalocyanine pigments, such as Phthalocyanine Blue and Phthalocyanine Green, chinaredorbit pigments, such as Quinacridone Red and Quinacridone Magenta, Pereladova pigments such as Perylene Red and Perylene Scarlet, isoindoline pigments, such as Isoindolinone Yellow and Isoindolinone Orange, imidazolone pigments such as Benzimidazolone Yellow, Benzimidazolone Orange and Benzimidazolone Red, philanthropie pigments such as Pyranthrone Red and Pyranthrone Orange, thioindigo pigments, condensed azo pigments, Flavanthrone Yellow, Acylamide Yellow, Quinophthalone Yellow, Nickel Azo Yellow, Copper Azomethine Yellow, Perinone Orange, Anthrone Orange, Dianthraquinonyl Red, and Dioxazine Violet, etc.

If organic pigments represented by numbers COLOR INDEX (S), as examples can be mentioned the following pigments. Needless to say that in addition to the following pigments can also be used known in the field of organic pigments.

C.I. Pigment Yellow 12, 13, 14, 17, 20, 24, 74, 83, 86, 93, 109, 110, 117, 120, 125, 128, 137, 138, 147, 148, 151, 153, 154, 166 and 168;

C.I. Pigment Orange 16, 36, 43, 51, 55, 59 and 61;

C.I. Pigment Red 9, 48, 49, 52, 53, 57, 97, 122, 123, 149, 168, 175, 176, 177, 180, 192, 215, 216, 217, 220, 223, 224, 226, 227, 228, 238 and 240;

C.I. Pigment Violet 19, 23, 29, 30, 37, 40 and 50;

C.I. Pigment Blue 15, 15:1, 15:3, 15:4, 15:6, 22, 60 and 64;

C.I. Pigment Green 7 and 36, and

C.I. Pigment Brown 23, 25 and 26.

According to the present invention, the amount of pigment added to print rasku, is preferably from 0.1 to 15 wt.%, in particular, from 1 to 10 wt.% of the total number of the printed ink. If the amount of pigment is within the specified limits, the resulting dispersion of the pigment contained in the printing ink, are able to maintain a stable dispersed state. In addition, the dye can be added as a coloring substance in addition to the dispersion of the pigment, for example, to adjust the color tone of the obtained printing ink.

Water environment

Aqueous medium for dissolving or dispersing the above-described pigment has no specific restrictions, if only it can be used for printing inks. When applying printing ink to the print medium crashcontrol way (for example, a bubble jet method) printing ink can be preferably obtained in such a way as to have the desired viscosity and surface tension to ensure good ink-jet large-properties while pulling.

Examples of the aqueous medium used for printing inks according to the present invention include water and mixed solvents of water and water soluble organic solvent. Specific examples of water-soluble organic solvent include alkalemia alcohols containing from 1 to 4 carbon atoms such as the methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol and tert-butyl alcohol; amides such as dimethylformamide and dimethylacetamide; ketones and ketone alcohols such as acetone and datetoday alcohol; ethers such as tetrahydrofuran and dioxane; polyalkylene glycols such as polyethylene glycol and polypropyleneglycol; alkalophile, Allenova group which contains from 2 to 6 carbon atoms, such as ethylene glycol, propylene glycol, butyleneglycol, triethylene glycol, 1,2,6-hexanetriol, thiodiglycol, hexyleneglycol and diethylene glycol; acetates simple lower alkyl ester such as acetate nanometrology ether of polyethylene glycol; glycerin; simple low alkylether polyhydric alcohols, such as onomatology (or monotropy) ether of ethylene glycol; methyl (or ethyl) ether of diethylene glycol and onomatology (or monotropy) ether of triethylene glycol; polyhydric alcohols, such as trimethylolpropane and trimethylated; N-methyl-2-pyrrolidone; 2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone. The above water-soluble organic solvents may be used individually or in any combination. As water can be preferably used deionized water (ion exchange water).

Water-soluble organic solution is tel, contained in the printing ink used according to the present invention has no specific limitation. However, its content is preferably from 3 to 50 wt.% of the total number of the printed ink. The water content of the printing ink is preferably from 50 to 95 wt.% of the total number of the printed ink.

Other components

In addition to the above components for aqueous printing inks according to the present invention, if necessary, may be added a surfactant, antifoaming additive, antiseptic, protects from mold agent, not to mention the humidifier, with the purpose of obtaining a printing ink having desired physical properties.

Component - reactive liquid

Ion of the polyvalent metal and its salt

Specific examples of polyvalent ions of metals that can be used in the reaction fluid, ions include divalent metals, such as Ca2+, Cu2+, Ni2+, Mg2+, Zn2+and Ba2+and trivalent ions of metals such as Al3+, Fe3+, Cr3+and Y3+. Sol ion polyvalent metal means a metal salt consisting of the above-mentioned ion polyvalent metal and the anion associated with the ion polyvalent metal, which must be soluble in the E. Examples of the anion for the formation of salts include SO42-, Cl-, CO32-, NO3-I-, Br-, ClO3-CH3COO-and HCOO-. It goes without saying that the present invention is not limited to these compounds.

Taking into account the effect of the present invention, the ion content of polyvalent metal in the reaction liquid is preferably from 0.01 to 10 wt.%, more preferably from 0.1 to 5 wt.% from the total amount of the reaction liquid. To achieve sufficient performance of the functions of the destabilization of the printing inks to achieve a high level of uniformity and optical image density, ion polyvalent metal is preferably contained in an amount of from 2.0 to 4.0 wt.% from the mass of the reaction liquid. Although ion polyvalent metal may be contained in the reaction liquid in an amount in excess of 10 wt.%, usually it is not contained in an excessive amount of for the reason that significant improvement of function of the destabilization of the printing ink is undesirable, even if ion polyvalent metal contains more than 10 wt.%.

The reaction liquid preferably contains no dye is transparent, however, the lack of absorption in the visible spectrum is not always desirable. In other words, it is m who can show absorption in the visible spectrum, provided it has no significant effect on the resulting image.

Water environment

Examples of the aqueous medium used in the reaction liquids include water and mixed solvents of water and water soluble organic solvent. Water-soluble organic solvent is particularly preferably has an effect to prevent drying of the obtained reaction liquid. Its specific examples include alkalemia alcohols containing from 1 to 4 carbon atoms, such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol and tert-butyl alcohol; amides such as dimethylformamide and dimethylacetamide; ketones and ketone alcohols such as acetone and datetoday alcohol; ethers such as tetrahydrofuran and dioxane; polyalkylene glycols such as polyethylene glycol and polypropyleneglycol; alkalophile, Allenova group which contains from 2 to 6 carbon atoms, such as ethylene glycol, propylene glycol, butyleneglycol, triethylene glycol, 1,2,6-hexanetriol, thiodiglycol, hexyleneglycol and diethylene glycol; acetates simple lower alkyl ester such as the acetate nanometrology ether of polyethylene glycol; glycerin; simple low alkylether polyhydric alcohols, such as onomatology (or monoethylene is) ether of ethylene glycol; methyl (or ethyl) ether of diethylene glycol and onomatology (or monotropy) ether of triethylene glycol; polyhydric alcohols, such as trimethylolpropane and trimethylated; N-methyl-2-pyrrolidone; 2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone. The above water-soluble organic solvents may be used individually or in any combination. As water can be preferably used deionized water (ion exchange water).

The content of water-soluble organic solvent contained in the reaction liquid used in the present invention has no specific limitation. However, it is preferably from 3 to 50 wt.% from the total amount of the reaction liquid. The water content in the reaction liquid is preferably from 50 to 95 wt.% from the total amount of the reaction liquid.

Other components

In addition to the above components, to the reaction liquid according to the present invention can be appropriately added to the polymer compound, a surfactant, antifoaming additive, antiseptic, protects from mold agent and the like, to obtain a reaction liquid having desirable physical properties.

Polymer connection:

Part of reaction the second liquid according to the present invention may optionally include a polymeric compound. In this case, the abrasion resistance of printed media can be increased. The polymer compound used in the reaction liquid according to the present invention, preferably is a nonionic, water-soluble polymer, do not participate directly in the reaction component, such as a dye in an aqueous printing ink, and ion polyvalent metal or the like in the reaction liquid. Its specific examples include resins, such as polyacrylamide, polyvinylpyrrolidone, water-soluble cellulose such as carboxymethylcellulose, hydroxymethylcellulose and hydroxypropylcellulose, simple polivinilbutilovy ether, polyvinylacetal and polyvinyl alcohol. However, the present invention is not limited to the above compounds. For example, can also be used polymeric compound with an anionic link or cationic element to be added to any of these non-ionic polymers, while maintaining the basic properties of aqueous printing inks and the reaction liquid. In addition, the polymer compound is very soluble in water. However, it may also be a dispersion such as a latex or emulsion. The content of the added polymer compound is preferably from 0.01 to 20 wt.% of the total kolichestvennoi liquid.

Physical properties

In the present invention the pH of the reaction liquid is preferably below a pH of printing ink from the viewpoint of, for example, more effective implementation of the reaction of the ink with the reaction fluid and improve the uniformity and properties punching the paint from the received fingerprint.

Set from the reaction liquid and the aqueous ink

When drafting set from the reaction liquid and the aqueous ink according to the present invention, including the above-described combination of the aqueous ink and the reaction liquid, specific limitations on color printing inks are not available, therefore, can be used in any aqueous printing ink having a color tone selected from, for example, yellow, Magenta, cyan, red, green, blue and black. Specifically used the dye or dyes can be appropriately selected from the above-mentioned dyes thus, to obtain the aqueous printing ink having a desired color. Printing ink in combination with the reaction liquid is not limited to one type of printing ink; the preferred option includes a set of reaction liquid and the aqueous printing inks, which connect two or more inks different in color from one another, the thus, the so they can serve for the formation of multicolor images. In this case, it is necessary that at least one aqueous printing ink of the two or more printing inks interacted with the reaction liquid.

More specifically, it is necessary that at least one of the printing inks included in the set from the reaction liquid and ink, was an aqueous printing ink containing a dispersion of a pigment in which the pigment was dispersed using a dispersant is an anionic polymer, and forming aggregates of the dye during its contact with the reaction liquid on the print medium. Needless to say that all aqueous printing inks included in the kit from the reaction liquid and the aqueous printing inks that are water printing ink that performs the above function. Set from the reaction liquid and the aqueous printing inks having such a composition capable of preventing blurring occurring in the case where the aqueous printing ink of different colors is applied next to the media that presents a problem when forming a multicolor image using a printing machine.

More specifically, blurring, which is a problem when receiving crackastroloka multicolor image, especially noticeable between black PE atoi paint and printing ink of another color (for example, at least one of the printing ink selected from the yellow ink, Magenta ink, cyan ink, red ink, green ink and blue ink). Accordingly, the present invention is particularly preferably receive at least a black ink, interacting with the reaction liquid.

The method of forming images

The method of forming images according to the present invention includes a stage (i) applying the aqueous ink, which is part of the above set from the reaction liquid and the aqueous ink on the print medium by ink-jet printing method and (ii) applying the reaction liquid, which is part of the above set from the reaction liquid and the aqueous ink on the print medium, at this stage (i) and stage (ii) is carried out in such a way as to ensure the contact of the aqueous printing ink with the reaction liquid on the print medium. When water printing ink comes into contact with the reaction liquid on the print medium according to this process, may be formed with a high-quality image having high image density and high color expression, a clearer delineation of the contour part of the image that is free from reply the project for paints and have a high penetration of paint. Used herein, the term "penetration capabilities" means the infiltration of the dye on the back surface of the printed surface, which causes excessive penetration of printing ink. When applying the reaction liquid and the aqueous ink on the print medium is accordingly preferred to apply the reaction liquid onto at least a section of the media, which caused water printing ink. More preferred is the application of the reaction liquid over a wide area of the print medium than the plot, which is applied to aqueous printing ink.

According to the present invention, multiple sets of the reaction liquid and the aqueous ink comprising water printing ink having the composition according to the present invention, or a kit including water printing ink having such a composition, and water printing ink having a different composition, connect, while receiving sets from the reaction liquid and the aqueous ink comprising water printing ink, which in any case can be used suitably for forming high-quality color images. When using such a set from the reaction liquid and the aqueous ink comprising such water printing ink, for Paul the treatment of the printed image using a set of reaction liquid and the aqueous ink, with water printing ink having the composition according to the present invention, as, for example, black paint, so that the area of the black image is adjacent to the area of the color image, the blurring of the ink can be prevented very effectively.

In the course of various research system imaging the two liquids, the authors of the present invention have found that to obtain high-quality images and simultaneous footprint, which also has good abrasion resistance, important the following conditions. In particular, it is very important to form aggregates by contact of the pigment with polyvalent metal on the print medium so that the aggregates were present at a particular site within the media and specifically formed in larger quantities in place inside the print medium in the direction of depth from the site of its surface layer, i.e. in the range of 30 μm in the depth direction from its surface. For adjusting the position of the aggregates present in the media, as a very important factor is the regulation of the ability to chemical interaction between the pigment and the polyvalent metal to a specific value, as suggested in the present invention. In addition, regulares the location, the number, etc. of polyvalent metal present in the media, thereby allowing you to easily adjust the position of the units.

In the system for imaging with 2 liquids there are various ways to contact the reaction fluid from the printing ink. Their examples include a method of contacting the reaction liquid and ink with each other in a liquid state on the media, and how to contact the reaction fluid from the printing ink after completion of the binding reaction liquid media, namely after the droplets of the reaction liquid is absorbed inside the media.

The authors of the present invention concluded that the method of contact as aqueous printing inks and the reaction liquid with each other in a liquid state on the print medium is most preferred for distribution of units at a certain depth from the land surface layer of the media without their localization on the surface of the print medium. More specifically, the method of applying the aqueous ink after completion of the binding reaction of the fluid exceeds a way almost simultaneous application of aqueous printing inks and the reaction liquid media way the ink-jet printing.

It is believed that the reason that the method of applying a water-based ink after completion of the binding reaction liquid media provides high resistance to wear, is the following. When the reaction liquid and the aqueous printing ink come into contact with each other in a liquid state on the media, the dye is aggregated at the site of the surface layer of the print medium with the increasing ability to chemical interaction between the printed ink and the reaction liquid. The result can be obtained an image with much higher ability to staining. However, in some cases, a sufficient speed of image acquisition may not be achieved. On the other hand, when applying the printing ink after the binding reaction liquid media, a large number of chemically active components contained in the reaction liquid is present within the print medium, and a large number of aggregates of the dye formed in place inside the print medium in the direction of depth from the site of its surface layer. The result is that it may be provided with a higher abrasion resistance than in the case when 2 liquids come into contact with each other on the media for having Ekati in the liquid state.

For the above reason, in addition to regulation, the ability to chemical interaction between the pigment and polyvalent metal, for the purpose of regulating the location of units is preferred development of the device for applying the reaction liquid to the print medium.

Incidentally, the expression "time, which was completed linking"used in the present invention, means the point in time at which the value of Ka(t - tw)1/2in the following equation (a) exceeds the amount of the reaction liquid, really applied to the surface of the paper. It means the point in time at which the droplets of the reaction liquid is absorbed into the media after t seconds, is calculated based on the values of Ka according to the Bristow method, and the amount deposited liquid composition.

Incidentally, the value of Ka in the present invention is determined by the Bristow method as the value showing the penetrating ability of the ink to the print medium. In other words, if the penetrating ability of the ink indicated by the number V of printing ink 1 m2the print medium, the amount V (ml/m2= μm) of the ink penetrated into the media after it has passed the preset time t (msec) since the ejection of droplets printed to the ASCI, represented by the following equation Bristow

V = Vr + Ka(t-tw)1/2Equation (a)

Immediately after application of the reaction liquid media is a large part of the reaction liquid absorbed on rough areas (uneven parts of the surface of the print medium), so that the reaction liquid is barely penetrates into the print medium. The duration of such a process is called contact time (tw), and the amount of the reaction liquid absorbed on uneven areas of contact, denoted as Vr. With increasing contact time after applying the reaction liquid to the print medium, the amount of the reaction liquid infiltrated into the media, increases in proportion to 1/2 degree contact time, i.e. the (t-tw). Ka is a coefficient of proportionality for this increase indicates a value corresponding to the speed of penetration. The value of Ka can be measured using a tester dynamic permeability for liquids (for example, having the trade name Dynamic Permeability Tester and manufactured by Toyo Seiki Seisaku-Sho, Ltd.) in accordance with the Bristow method, etc.

According to the Bristow method, the value of Ka in the present invention is a value measured using as the e media plain paper [for example, paper RV, used for a copying machine using the electrophotographic system, roll printers (printers using a laser beam) or printers using ink-jet printing, or paper, for PPC, i.e. paper used for copying machines using electrophotographic system; product of Canon Inc.]. For the environment to measure take a normal office environment with, for example, a temperature of 20 to 25°C and humidity from 40 to 60%.

According to the results obtained by the authors of the present invention, for more accurate control of the position of the units it is important that a greater amount of polyvalent metal present within a distance of about 30 μm from the surface of the print medium. It is believed that in order within a distance of about 30 μm was attended by a larger number of polyvalent metal, are of great importance penetration ability and the amount of the reaction liquid applied to the media, not to mention the amount of polyvalent metal contained in the reaction liquid.

The reaction liquid passes along the fibers of the print medium under the influence of the solvent, a surfactant or the like and at the same time it comes in contact with the media, at ICSA liquid simultaneously starts to evaporate, therefore, it is believed that part of polyvalent metal, lost the ability to dissolve, begins to Deposit. To ensure the presence of a large number of polyvalent metal inside the print medium in the direction of depth from the land surface layer of the print medium, the important point is the application of the reaction liquid having the lowest rate of penetration into the media.

Based on the above regarding the penetration of the reaction liquid in plain paper in the present invention, the value of Ka was found according to the Bristow method, is preferably at least 1.3 ml·m·-2MS-1/2more preferably more than 3.0 ml·m·-2MS-1/2and the number of the applied reaction liquid is preferably from 0.5 to 5 g/m2, more preferably from 2.0 to 3.0 g/m2.

The main aspect of the present invention is the distribution of aggregates formed by contact of the reaction liquid with an aqueous printing ink at a certain depth from the land surface layer of the media without their localization on the surface of the print medium. The most important condition for achieving this state is bringing the ability to chemical interaction of m is waiting for the reaction liquid and the aqueous printing ink to the value specified in the present invention, however the present invention can be more effectively carried out by regulating the number and speed of penetration of the applied reaction liquid, the time elapsed since application of the reaction liquid to the print medium prior to application of printing ink, etc. with regard to known systems, in which for forming image using the reaction liquid and the aqueous ink, it is not only the ability to chemical interaction between the reaction liquid and the aqueous printing ink is stronger than the ability according to the present invention, but there is no system that allows you to regulate the ability to chemical interaction, as described above. For example, many known systems on the media put a large amount of the reaction liquid. In such a system, many units are localized at the area of the surface layer of the print medium when the contact of the reaction liquid and the aqueous ink with each other in a liquid state on the print medium. On the other hand, even when applying the aqueous ink after a binding reaction liquid media polyvalent metal does not remain within the media, and the WPPT is Underoath close to the surface of the reverse side, since the amount of deposited reaction liquid is great. As a result, in some cases, can be reduced by breaking down the paint from the received fingerprint.

Examples of the method of applying the reaction liquid according to the present invention include a method of using ink-jet printing systems, such as printing inks, as well as the method of applying the reaction liquid according to the present invention on the media roller or the like of the above-mentioned preferred methods is to apply with a roller or the like, because by this way you do not need to take into account the stability of ejection of the ink, or the like, the Specific method of application described below.

The amount applied of the reaction liquid when it is applied on the print medium by a roller or the like may appropriately be regulated by the physical properties of the reaction liquid, the speed of rotation of the roller used in the applicator, the contact pressure of the roller on the media, etc.

Properties of printing ink properties when crassostreae the throwing and permeability in the media

Set from the reaction liquid and the aqueous ink according to the present invention is particularly suitable for use in ink-jet printing. The way the ink-jet printing the tees include a printing method, at which mechanical energy is printing ink, pushing her droplets and a method of printing, in which printing ink is affected by thermal energy with the aim of throwing it droplets by generating bubbles in the printing ink. In such printing methods can be also used in printing inks and the reaction liquid according to the present invention. In this case, the reaction liquid and the ink having the composition according to the present invention, regulate so that they could be ejected from the ink-jet head. From the point of view of ability to ejection from the ink-jet head such liquids preferably have, for example, a viscosity in the range from 1 to 15 mPa.s, more specifically from 1 to 5 MPa * s and a surface tension of 25 mn/m (Dyne/cm) or greater, more specifically from 25 to 50 mn/m (Dyne/cm).

In particular, the reaction liquid preferably has a surface tension of 25 mn/m (Dyne/cm) or more to 35 mn/m (Dyne/cm) or less, as is preferable application of the reaction liquid at least to a printing area of the print medium, on which is applied a printing ink.

When applying the reaction liquid to the print medium through the system using a roller or slat, the reaction liquid preferably has the t surface tension of 20 mn/m (Dyne/cm) or more, more specifically from 25 mn/m (Dyne/cm) or more to 35 mn/m (Dyne/cm) or less and a viscosity of 100 centipoise or less, more specifically from 5 centipoise or more to 60 centipoise or less, from the viewpoint of the quantities used and uniform coating on the media.

Crassostrea printing machine

The following sample unit for printing (printing machine) for forming an image using aqueous printing inks and/or reaction liquid.

Figure 3 illustrates a sample of the ink-jet printing machine. Such a machine for forming images using ink-jet printing system serial type includes the print head 1, a cassette for the paper 16, in which the tray to feed paper 17, the input media (hereinafter also referred to as "printing paper") 19 and the device for supplying the reaction liquid according to the present invention comprise a single unit, the drive for the reciprocating movement of the printhead in a direction perpendicular to the feed direction of the printing paper, and a device for regulating the movement of these components.

The print head 1 mounted on the carriage 2 so that the surface on which there are holes for ink, was oriented towards the roller 11. Pecat what I head 1 has openings for ink, several electrothermal (which converts electrical energy into heat) converters (for example, heating resistors for heating water printing ink and substrate to support (not shown). In addition, the printing head 1 is equipped in the upper part of the carriage and the cartridge for printing inks.

The carriage 2 supports the print head 1 and can move forward and backward along the two guide rods 9, which is parallel to the direction of the width of the printing paper 19. The print head 1 moves synchronously with the reciprocating movement of such carriage, throwing droplets of printing ink on the printing paper 19, thereby forming an image. Cartridge paper 16 can be installed in the machine body for forming images with the possibility of replacement. The printing paper 19 is placed on the tray to feed paper 17 in the cartridge to the paper 16. When paper sheet located on the top, pressed against the feeding roller 10 by a spring 18 which presses the tray to feed paper 17 upwards. The feed roller 10 is a roller having in cross section the shape of a Crescent and driven and rotated by a motor (not shown)to be submitted by a delimiter capture only the sheet located on the top (not shown).

Separated and filed paper for printing and 19 is fed along the feed surface 16A of the cartridge to the paper 16 and the feed surface 27A of the intermediate roller 12, having a large diameter, and roller coating 6 having a small diameter, and under pressure comes in contact with the intermediate roller 12. Such a giving surface is a surface that is curved in such a way as to form an arc coaxial with the intermediate roller 12. Accordingly, the feed direction of the printing paper 19 is inverted after passing through such a giving surface 16A and 27A. In other words, the surface of the printing paper 19 is used for printing, turned down until the paper is transferred from the tray to feed paper 17 and reaches the intermediate roller 12, but rotated upward (in the direction of the print head) at the moment when it reaches the position opposite the printing head 1. Accordingly, the printed surface of the paper for printing is always facing in the direction of the external parts of the machine for imaging.

A device for applying the reaction liquid is installed in the cartridge to the paper 16 and includes a supply tank 22 for supplying the reaction liquid 15, the platen to feed 13 supported rotatably in such a state that part of its peripheral surface was immersed in the tank 22, and a roller to cover 6 that is located in parallel with the platen for feeding and entering into contact with the platen to feed 13, in ashaiman in the same direction. Cushion to cover 6 is located so that its peripheral surface comes into contact with the intermediate roller 12 for transferring the printing paper 19 and is parallel to it. Accordingly, when the rotation of the intermediate roller 12 during the transfer printing paper 19 to rotate the intermediate roller 12 and the roller for coating 6. The result of the reaction liquid 15 is supplied to the peripheral surface of the roller to cover 6 of the feeding roller 13, and then using a roller for coating 6 is applied to the entire printing surface of the printing paper 19 is sandwiched between the platen to cover 6 and the intermediate roller 12.

In the feed tank 22 such a machine for forming an image includes a float 14. This float is composed of a substance having a lighter specific gravity than the reaction liquid 15, so it floats at the level of the reaction liquid, allowing you to visually determine from the outside of the remaining part of the reaction liquid through the transparent window 21, showing her balance.

Figure 4 illustrates a front view of a part showing the balance. In this showing the presence of remnant part along the longitudinal direction in showing the rest of the window 21 put designations, showing the level of balance. The position at which the level of the reaction liquid or the float 15 reaches a position which, marked as "Complete"means a position in which there is a full supply of the reaction liquid. On the other hand, the position at which the level of the reaction liquid or the float 15 is in the position labeled "Add"means a position in which the reaction liquid will be over soon. Accordingly, it is evident that when the amount of the reaction liquid 15 is gradually reduced and the float 14 reaches the line "Add", you only need to refill the reaction liquid.

As for the method of supplying the reaction liquid, as shown in figure 5, the inlet 20 formed by a rubber item with the slot, insert the tip of the injector 23, thereby feeding the reaction liquid in the supply tank 22.

Printing paper, coated thus the reaction liquid, and then moved to the desired length using a basic transmission roller 7 and brought into contact under pressure with such a roller attached to the roller 8, so as to convey the recording paper in part, causing the printing ink from the printing head 1. The printed sheet 19 affected by the passage and the printing of the above-described structure, the unloaded roller to issue paper 3, and a sharp protrusion 4 entered into contact under pressure with the roller, and is formed in a stack on the tray for the Vyg the narrow paper 5.

Print head

As options to the print head ejection system, allowing the bubbles to communicate with the air while pulling, which can be suitably used in the present invention, may be mentioned the head type of the so-called "regional shooting" (edge shooter), described, for example, in Japanese patent registration number 2783647 and type "side fire" (side shooter), effectively used in recent years.

In particular, among the ink-jet large-print systems printhead and printing machine with ink-jet system, in which use thermal energy for the formation of ejected droplets, thereby carrying out the recording can be with high efficiency used in the present invention.

With regard to their typical designs and principles, preferred are the heads using the basic principle is described, for example, in U.S. patent No. 4723129 and 4740696. This system can be used in any type heads of the so-called type "on request" (impulse printing) and a continuous type. Particularly effective is the type of "pulse print", because at least one driving signal corresponding to recording information and causes a sharp rise of temperature that exceeds the temperature of the tour boiling film, can be sent to the electrothermal transducer installed in accordance with by passing the sheet or liquid, which contains a liquid (printing ink), with electrothermal Converter begins to produce thermal energy that causes film boiling acting on the warm surface of the printing head so that the liquid (printing ink) in response to the control signal may be generated bubbles in the one to one relationship. Liquid (printing ink) is ejected through the hole to push in the growth and contraction of this bubble with the formation of at least one droplet. If this control signal is sent in the form of a pulse, the compression of the bubble is appropriately carried out in the moment, in particular, can be achieved in the most favorable moment for ejection of the liquid (ink). Thus, the more preferred is the use of such pulse signals.

As such pulsating control signal can be used, the signals described in U.S. patent No. 4463359 and 4345262. When using the conditions described in U.S. patent No. 4313124 disclosing the invention relating to the rate of temperature rise in current from the heat of the surface, can be obtained fine print.

In addition, the structure described in Japanese patent application laid No. S59-123670, offering design, which share a common slit for multiple electrothermal converters as eject part of the electrothermal converters, and also in Japanese patent application laid No. S59-138461, offering design, in which hole, absorbing pressure wave of thermal energy is located opposite the site for disposal, can also be effective for the present invention.

Moreover, despite the fact that the printing head type full line having a length corresponding to the width of the largest media that can be printed using a printing machine may be of any construction, which achieves the given length, with the help of this combination is escolca print heads, as described in the above publications, and one-piece construction with one print head, the present invention can more effectively achieve the above-described steps.

In addition, the present invention is effective even when the replaceable print head chip type in which electrical connection to the machine body and the ink and water from the machine become possible when placed in the machine casing, or printhead cartridge type in which a tank for ink is integral with the printing head.

Moreover, it is preferable to add devices restore the print head, preliminary auxiliary devices, etc. that are a part of the printing machine according to the present invention, because they do the results of the implementation of the present invention more stable. Specifically, the cover for the print head, cleaning unit, a device for increasing the pressure or injection of air, a device for pre-heating electrothermal converters, other, different heating elements or combinations thereof, and the mode of preliminary ejection, including throwing paint separately from printing, may also be effective for osuwestvlenieaj.in printing.

The printing mode of the printing machine is not only a mode of usage of primary colors, such as black, but the present invention is also very effective for the machine, which uses at least one difficult color formed with different colors and full color by color mixing, although the print head may be constructed in solid form or in the form of a combination of several heads.

In the above embodiments of the present invention of the printing inks have been described as liquid. However, printing inks, cured at room or lower temperatures can be used provided that they are softened or process of dissolving at room temperature or have a liquid phase after the incorporation of the used recording signals, as in the above-described ink-jet large-systems, the temperature of the printing ink is usually adjustable from 30 to 70°so as to adjust the viscosity of the paint so that it was within the range of stable ejection.

In addition, in the present invention can be also used in printing inks, liquefied by means of thermal energy according to recording signals and emitted in the form of liquid printing inks such as printing inks, the temperature rise motorically energy is prevented with a positive effect through the use of thermal energy as the energy of the phase transition from the solid phase into the liquid phase, printing inks, cured to the state, intended for storage, to prevent their evaporation, and printing inks, the nature of which allows you dilute them for the first time by means of thermal energy, such as paint, which begin to cure at the moment when they reach the print medium. In this case, as described in Japanese patent laid bids No. S54-56847 or S60-61260, printing inks are of the form in which they are exposed electrothermal transducers in the form of liquid or solid substances, stuck in the recesses or through holes of a porous sheet. In the present invention is most effective as the above-described printing inks are inks that can be used in the above system with film boiling.

In addition, as variants of the printing machine according to the present invention can also be used variants of the printing machine in combination with the reading device and the facsimile having the function of transfer-acceptance, along with the option according to which machine in whole or in part takes the form of a terminal for output of images intended for devices for information processing, such as word processors and computers.

EXAMPLES

Further, the present invention operable specifically with reference to examples and comparative examples. However, the present invention is not limited to the examples presented, because they are included in the scope of the present invention. In addition, in the absence of other instructions, all designations of "part" or "parts" and "%"used in the examples mean weight part or parts and the mass %. Although in the above examples as a dye or carbon black, may be used any dye, provided that it belongs to the above pigments.

Obtaining a reaction liquid

The following components are mixed and thoroughly stirred into the solution. Then the obtained solution is filtered under pressure through a microfilter (trade name FR100, a product of Fuji Photo Film Co., Ltd.), having a pore size of 1 μm, resulting in the reaction liquid 1 of the following composition, g:

Calcium nitrate (tetrahydrate)18
Trimethylolpropane10
Glycerin5
Diethylene glycol5
Adduct of ethylene oxide and acetylenics
(trade name Acetylenol EH,
the product of Kawaken Fine Chemicals Co., Ltd.)1
The treated ion exchange is m water 61

Getting black ink

Obtaining a dispersion of the pigment

First get the following dispersion pigment 1-10.

The dispersion of pigment 1

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 40 parts of anionic polymer P-1 [triple a styrene/230G (product of Shin-Nakamura Chemical Co., Ltd.)/ acrylic acid (copolymerization ratio (mass ratio) = 60/10/30), an acid number of 180, srednevekovaja molecular weight of 9000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 1, having a solids content of approximately 14.0% and srednevekovoi particle diameter of 110 nm, the quality of the finished product.

The pigment dispersion 2

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 40 parts of anionic polymer P-2 [triple a styrene/230G (product of Shin-Nakamura Chemical Co., Ltd.)/ acrylic acid (the copolymerization ratio (mass ratio) = 64/12/25), the acid number of 154, srednevekovaja molecular weight of 7500, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 2, having a solids content of approximately 14.0% and srednevekovoi particle diameter of 110 nm, the quality of the finished product.

The pigment dispersion 3

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 40 parts of anionic polymer P-3 [triple a styrene/230G (product of Shin-Nakamura Chemical Co., Ltd.)/ acrylic acid (copolymerization ratio (mass ratio) = 60/15/25), an acid number of 160, srednevekovaja molecular weight of 11,000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, with the conduct of dispel the simulation for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 3, having a solids content of approximately 14.0% and srednevekovoi particle diameter of 102 nm, the quality of the finished product.

The pigment dispersion 4

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 40 parts of anionic polymer P-4 [triple a styrene/230G (product of Shin-Nakamura Chemical Co., Ltd.)/ acrylic acid (copolymerization ratio (mass ratio) = 57/18/25), an acid number of 155, srednevekovaja molecular weight of 6900, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 4, having a solids content of approximately 14.0% and srednevekovoi particle diameter of 106 nm, the quality of the finished product.

The pigment dispersion 5

Mix ten parts of Monarch 880 (product of Cabot Co.) as a pigment, 20 hours is her anionic polymer P-5 [a styrene/acrylic acid (copolymerization ratio (mass ratio) = 70/30), acid number 200, srednevekovaja molecular weight of 9000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 70 parts of clean water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 150 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of the pigment having a solids content of about 12% and srednevekovoi particle diameter of 110 nm, the quality of the finished product. To the resulting dispersion added 20 parts of an anionic polymer P-3 [triple a styrene/230G (product of Shin-Nakamura Chemical Co., Ltd.)/acrylic acid (copolymerization ratio (mass ratio) = 60/15/25), an acid number of 160, srednevekovaja molecular weight of 11,000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)], obtaining a pigment dispersion 5.

The pigment dispersion 6

Mix ten parts of Monarch 880 (product of Cabot Co.) as a pigment, 20 parts of an anionic polymer P-5 [a styrene/acrylic acid (copolymerization ratio (mass ratio) = 70/30), acid value 20, srednevekovaja molecular weight of 9000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 70 parts of clean water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 150 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of the pigment having a solids content of about 12% and srednevekovoi particle diameter of 110 nm, the quality of the finished product. To the resulting dispersion added 30 parts of anionic polymer P-6 [copolymer of an acrylate/acrylic acid (copolymerization ratio (mass ratio) = 87/13), an acid number of 100, srednevekovaja molecular weight of 11,000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)], obtaining a pigment dispersion 6.

The pigment dispersion 7

Mix ten parts of Monarch 880 (product of Cabot Co.) as a pigment, 20 parts of an anionic polymer P-7 [triple a styrene/butyl acrylate/acrylic acid (copolymerization ratio (mass ratio) = 40/35/25), acid number 150, srednevekovaja molecular m the CCA 8000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 70 parts of clean water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 150 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 7, having a solids content of about 12% and srednevekovoi particle diameter of 115 nm, the quality of the finished product.

The pigment dispersion 8

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 25 parts of anionic polymer P-5 [a styrene/acrylic acid (copolymerization ratio (mass ratio) = 70/30), acid value 200, srednevekovaja molecular weight of 10000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 65 parts of clean water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion C is Gruaud in a centrifugal separator to remove coarse particles, getting in the dispersion of the pigment 8, having a solids content of about 12.5% and srednevekovoi particle diameter of 105 nm, the quality of the finished product.

The pigment dispersion 9

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 25 parts of anionic polymer P-5 [a styrene/acrylic acid (copolymerization ratio (mass ratio) = 70/30), acid value 200, srednevekovaja molecular weight of 10000, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 9, having a solids content of about 14% and srednevekovoi particle diameter of 101 nm, the quality of the finished product.

Dispersion of pigment 10

Mix ten parts of Monarch 880 (product of Cabot Co.) as the pigment, 40 parts of anionic polymer P-8 [copolymer of an acrylate/acrylic acid (copolymerization ratio (mass ratio) = 70/30), acid : the 200, srednevekovaja molecular weight of 9800, the solids content in the aqueous solution is 10% (neutralizing agent: potassium hydroxide)] and 50 parts of pure water. Vertical sand mill periodic action (manufactured by AIMEX Co.) load the mixture and 250 parts of Zirconia beads having a diameter of 0.3 mm, followed by dispersion for 10 hours while cooling with water. Thus obtained dispersion is loaded into a centrifugal separator to remove coarse particles, resulting in the dispersion of pigment 10, having a solids content of about 12.5% and srednevekovoi particle diameter of 100 nm, the quality of the finished product.

Receiving printing ink

Thus obtained dispersion of the pigment 1-10 is used to produce printing inks 1-10, respectively. The following respective components are mixed and thoroughly stirred in the form of solutions or dispersions. Then the obtained solution or dispersion is filtered under pressure (high pressure 0.4 MPa) through a microfilter (trade name F300, a product of Fuji Photo Film Co., Ltd.), having a pore size of 1 μm, resulting in the printing ink 1-10. Dispersion of the pigment 1-10 is used to produce printing inks 1-10, respectively, including:

The variance of p is gment 40
Glycerin9
Diethylene glycol6
Adduct of ethylene oxide and acetylenics
(trade name Acetylenol EH,
the product of Kawaken Fine Chemicals Co., Ltd.)1
The treated ion exchange water44

The evaluation set from the reaction liquid and ink

Printing ink and the reaction liquid combine with each other in accordance with the following table, getting sets from the reaction liquid and the printing inks according to examples 1-7 and comparative examples 1-3 for imaging. As the print medium using a commercially available copy paper, bond paper and recycled paper. Initially, the reaction liquid is applied onto each carrier for printing process comprising applying by roller, using roller coating, having the structure presented in figure 3. The speed of the roller and the contact pressure between the platen and the print medium adjust so that the amount of the reaction liquid applied to the media was 2.4 g/cm2. Immediately after the binding reaction liquid media suitable for the General her printing ink from the ink 1-10 put on a print medium by using ink-jet printing machines, BJS700 (produced by Canon Inc.), with multi-jet pulse printing head in which the ink is ejected under the influence of thermal energy according to recording signals, while the following evaluation.

(1) the Ability to chemical interaction between the printed ink and the reaction liquid

Printing ink and the reaction liquid contained in each set of printing inks and the reaction liquid according to examples 1-7 and comparative examples 1-3, are mixed in the following conditions to determine the absorption liquid, thereby evaluating the reactivity of the set. The results are presented in the table.

Assuming (A) the absorption at the wavelength of maximum absorption in the visible range after filtering 50 g 800-fold diluted aqueous solution of the reaction liquid and 0.3 g of 5-fold diluted aqueous solution aqueous printing ink through a filter with pore size 0.2 μm through 15 minutes after receiving the mixture, and (C) the absorption at the wavelength of maximum absorption in the visible range of a mixture of 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks and 50 g of pure water, determine the magnitude of the reactivity of (A)/(B).

(2) abrasion Resistance

One minute after printing the font MS gothic 14 points and 2-cm solid square each is printed area rubbed with a finger, determining the resistance to abrasion in accordance with the following standard. The results are shown in the table.

A: abrasion almost not noticeable as printed characters, the plot, and the plot with a solid square, and the finger is clean.

In: plot with printed characters or plot with a solid square abraded, while the finger is polluted.

(3) Evaluation of breaking paint

To visually determine the degree of "penetration" of the printed ink on the reverse side of the printed surface of the print 2-cm solid square, allowing to determine the penetration of the ink in accordance with the following standard. The results are shown in the table.

A: the penetration of printing ink is barely noticeable.

In: the penetration of printing ink visible.

Set printing inkReactivityAbrasion resistancePerforation paint
The reaction liquidPrinting ink
Example1110,65AndAnd
21 20,36AndAnd
3130,49AndAnd
4140,74AndAnd
5150,70AndAnd
6160,77AndAnd
7170,49AndAnd
Comparative example118<0,10InAnd
2190,25InAnd
3110>0,90AndIn

In addition, the abrasion resistance of the prints obtained in examples 1-5, in which images were formed by using ink containing a dispersant is an anionic polymer comprising a monomer containing a non-ionic group-Deputy as a structural element, the higher the abrasion resistance of the prints obtained in examples 6 and 7, in which images were formed using the paints that do not contain dispergator is a - anionic polymer comprising a monomer containing a non-ionic group-Deputy as a structural element.

This application claims the priority of applications for Japanese patents No. 2004-075358, 2004-075359 and 2004-075260 filed March 16, 2004, as well as applications in Japanese patent No. 2005-067994 filed March 10, 2005, referred to here for details.

1. Aqueous printing ink used in the system in which imaging is used, the reaction liquid containing at least ion polyvalent metal, and the ion content of polyvalent metal in the reaction liquid is from 0.01 to 10 wt.%, and aqueous printing ink containing at least a dispersion of a pigment in which the pigment is dispersed using an anionic polymer as a dispersant, and water printing ink meets the following condition:

the absorption at the wavelength of maximum absorption in the visible range (wavelength 550 nm in the case of use as a pigment carbon black) a mixture of 50 g 800-fold diluted aqueous solution of the reaction liquid and 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks, filtered through a filter with pore size 0.2 μm through 15 minutes after receiving the mixture, designated as (A), and the absorption at the wavelength of maximum absorption wideman range mixture of 0.3 g of 5-fold diluted aqueous solution of aqueous printing inks and 50 g of pure water, designated as (B), satisfy the following relation:

of 0.3<(And)/(In)<0,85.

2. Aqueous printing ink according to claim 1, in which the dispersant is an anionic polymer contains a component that controls the interaction of the aqueous ink and a polyvalent metal.

3. Aqueous printing ink according to claim 2, in which the component that controls the interaction of the aqueous ink and a polyvalent metal is a non-ionic group-Deputy.

4. Aqueous printing ink according to claim 1, in which the dispersant is an anionic polymer comprises a structural element, at least a monomer of formula (1), while the share of this structural link is from 5 to 50 wt.% of the total number of polymer:

in which R1represents hydrogen or methyl group, R2represents - (CH2CH2O)nR3(n is an integer from 1 to 30), and R3represents hydrogen or methyl group.

5. Aqueous printing ink according to claim 1, in which the anionic polymer comprises a structural element, at least one compound selected from a monomer of formula (2) and monomer of the formula (3):

in which R4represents hydrogen or a methyl group, a R5represents Fe is strong or naftalina group; and

in which R6represents hydrogen or a methyl group, a R7represents a linear, branched or alicyclic alkyl or alkenylphenol group containing from 6 to 18 carbon atoms, or benzyl group.

6. Aqueous printing ink according to claim 1, in which the dispersant is an anionic polymer comprises a structural element, at least one compound selected from a monomer of formula (2) and monomer of the formula (3), and the content of the structural link is from 20 to 80 wt.% of the total number of polymer.

7. Aqueous printing ink according to claim 1, in which the pigment dispersion is a dispersion in which 100 wt. including pigment dispersed by the dispersant is an anionic polymer in an amount of from 20 to 200 wt. PM

8. Aqueous printing ink according to claim 1, in which the dispersant is an anionic polymer comprises at least two anionic polymer (hereafter referred to as "polymer (I)and polymer (II)").

9. Aqueous printing ink of claim 8, in which the polymer (I) includes as a structural element, at least one compound selected from a monomer of the formula (4) and monomer of the formula (5), and the share of this structural link is from 50 to 80 wt.% of the total amount of polymer (I):

in which R8p is ecstasy a hydrogen or methyl group, a R9represents phenyl or naftalina group; and

in which R10represents hydrogen or a methyl group, a R11represents a linear, branched or alicyclic alkyl or alkenylphenol group containing from 4 to 18 carbon atoms, or benzyl group.

10. Aqueous printing ink of claim 8, in which the polymer (I) includes styrene as a structural element.

11. Aqueous printing ink of claim 8, in which the polymer (II) includes as a structural element, at least a monomer of formula 6, and the contents of this structural link is from 20 to 80 wt.% of the total amount of polymer (II):

in which R12represents hydrogen or a methyl group, a R13represents a linear or branched alkyl group containing less than 4 carbon atoms.

12. Aqueous printing ink of claim 8, in which the polymer (II) includes as a structural element, a monomer containing a non-ionic group-Deputy.

13. Aqueous printing ink according to item 12, in which the polymer (II) includes as a structural link the monomer of formula (7), and the share of this structural link is from 5 to 50 wt.% of the total amount of polymer (II):

in which R14represents hydrogen or methyl group, R15-(CH2CH2O)nR16(n is an integer from 1 to 30), a R16represents hydrogen or methyl group.

14. Aqueous printing ink of claim 8, in which the total mass of the polymer (I) and polymer (II) preferably ranges from 20 to 200 wt. hours at 100 wt. hours of pigment.

15. Aqueous printing ink of claim 8, in which the ratio of polymer (II) to the polymer (I) is from 10 to 300 wt. hours at 100 wt. including the polymer (I).

16. Set from the reaction liquid and the aqueous ink, in which the reaction liquid contains at least a polyvalent metal, and water printing ink is an aqueous printing ink according to claim 1.

17. The method of applying a reaction liquid for forming images on a print medium, comprising a set of reaction liquid and the aqueous ink according to item 16 and applying the reaction liquid in an amount of from 0.5 g/m2or more to 5 g/m2or less on the media.

18. Method of forming image, intended to form images on the media, including stage

(i) applying the aqueous ink containing at least a dispersion of a pigment in which the pigment is dispersed using an anionic polymer in the quality of the ve dispersant, and part of a set together with a reaction liquid containing at least a polyvalent metal, a print medium using crackastroloka printing method; and

(ii) drawing on the media reaction liquid containing at least a polyvalent metal, and component kit with water printing ink containing at least a pigment dispersion, where the pigment is dispersed using an anionic polymer as a dispersant,

in which this aqueous printing ink is an aqueous printing ink according to claim 1, in which stage (i) is carried out after the completion of the binding reaction liquid media at stage (ii).



 

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FIELD: light industry; composition of decorative coats for wallpaper; manufacture of pearly ink for intaglio printing on wallpaper.

SUBSTANCE: composition of proposed printing ink for wallpaper contains 16-16.5 mass-% of pearly pigment; 12-12.5 mass-% of ethyl alcohol; 46-46.4 mass-% of binder - acrylic latex of butyl acrylate copolymer (19-21%) and methacrylic acid (10-12%) and water; copolymer acrylic latex is produced by method of radiation emulsion polymerization of butyl acrylate, vinyl acetate and methacrylic acid under action of ionizing radiation at dose rate of 0.05-0.1 g/s to absorbed doses of 1.5-2 kgr.

EFFECT: avoidance of lamination of ink; easily washable ink; enhanced heat resistance of ink.

1 tbl, 2 ex

FIELD: nonferrous metallurgy industry; aircraft industry; other industries; production of the heat-resistant alloys on the basis of the nickel.

SUBSTANCE: the invention is pertaining to the dispergated coloring agents intended for the ink-jet recording. The invention describes the dispergated coloring agent containing the coloring agent and the pseudo-finely-dispergated particles of the polarizable polymer having the dimension less, than the particles of the coloring agent. In the dispergated coloring agent the coloring agent itself and the particles of the polarizable polymer are attached to each other. At that the pseudo-finely-dispergated particles of the polarizable polymer contain the interpolymer consisting of the monomeric components containing, at least, one type of the hydrophobic monomer and, at least, one type of the hydrophilic monomer, where the hydrophobic monomer contains, at least, the monomer having the methyl group in α - position and the radically-polymerizable non-saturated double bond. The invention also describes the method of production of the indicated dispergated coloring agent and the water ink produced on its basis. The presented dispergated coloring agent has the high stability for a long time and practically in the absence of the surface-active substance or the dispergator. The ink produced on its basis has stability of blowout in the ink-jet printing method.

EFFECT: the invention ensures, that the ink produced on the basis of the presented dispergated coloring agent has the high stability of blowout in the ink-jet printing method.

20 cl, 14 dwg, 7 tbl, 15 ex

FIELD: printing materials.

SUBSTANCE: invention relates to printing ink containing first colorant and second colorant, at least one of the colorants including fluorescent color. First and second colorants are located separately on a printing medium while printing ink ensure obtaining printed image with improved fluorescent properties. Invention further relates to printed image and a method of forming printed image utilizing such ink. Invention solves the problem of reducing fluorescence and improving fluorescent properties by way of separating fluorescence region and colored region as well as by way of formation of area on printing medium wherein points of coagulated first colorant are spread in the region of fixed second colorant so that absorption of fluorescent emission energy from fluorescent colorant is considerably reduced by coexisting colorant involving corresponding technologies. The latter are based on a novel technical conception residing in improvement of characteristics of fluorescent emission of a second colorant used in printing ink including a first fluorescent colorant, which, being excited at specified excitation wavelength, fluoresces within specified wavelength range.

EFFECT: improved fluorescent properties of printed image.

15 cl, 31 dwg, 4 tbl, 33 ex

FIELD: printing engineering.

SUBSTANCE: invention, in particular, relates to a method of printing allowing protection of printing materials against counterfeit reprints, for instance in fabrication of banknotes, shares, checks, and other valuable paper documents. Invention provides printing liquid for printing through narrow nozzles onto objects, in particular when fabricating banknotes, shares, and checks, which liquid comprises carrying medium and nanoparticles of metal salts in the form of crystalline solid particles having average diameter less than 300 nm, which fluorescent and phosphorescent when excited by UV emission of the A, B, or C band, or visual light, while emitted fluorescent and phosphorescent waves do not lie in the visual light frequency region and excitation frequency region and emission frequency region are shifted in frequency scale. Nanoparticles contain enhancing additives of at least one type having excitation and emission frequency ranges corresponding to fluorescence and phosphorescence. Provided is also printing method including injecting of above-described liquid(s) through one or several narrow nozzles, which are regulated individually or by groups in relation to availability or lack of printing liquid and in relation to duration or intensity of flowing of printing liquid. Printing method is either piezoelectric method or jet printing one. Employment of proposed liquid for ink-pots and object marking, in particular when fabricating banknotes, shares, and checks involving printing equipment provided with one or several narrow nozzles is also described.

EFFECT: increased reliability of protection.

15 cl, 2 dwg

FIELD: chemical industry; printing industry; powder metallurgy industry; cosmetic industry; other industries; production and application of the highly anticorrosive metallic pigments.

SUBSTANCE: the invention is pertaining to production of the of the highly anticorrosive metallic pigments similar to laminas, which may be used in production of the printing ink, plastic materials, cosmetics, the powder coatings and in other branches of industry. The pigments have on their surfaces: the metallic substrates similar to the laminas and treated with the compounds of the phosphoric acid and-or the compounds of the boric acid; one or more layers of the coatings consisting of one or more hydrated oxides of the metals of one or more metals selected from the group, which includes silicon, aluminum, zirconium, titanium and tin. On the basis of the highly corrosive metallic pigments similar to laminas it is possible to produce the interferential colored pigments. The invention allows to increase the anticorrosive resistance of the metallic pigments at the expense of saving without the faults of the initial surface smoothness of the similar to the laminas metallic substrates, to increase the homogeneity and density of the layers of the hydrated oxides of the metals.

EFFECT: the invention ensures the increased anticorrosive resistance of the metallic pigments, saving the initial surface smoothness of the similar to the laminas metallic substrates, the increased homogeneity and density of the layers of the hydrated metals oxides.

40 cl, 9 ex, 4 tbl, 8 dwg

FIELD: chemical industry; computer industry; methods of production of the pigments used in the coatings of the registering medium of ink-jet systems.

SUBSTANCE: the invention is pertaining to production of the pigments suitable for usage in the compositions of the registering mediums used for the ink jet printing. The invention provides, that the surface of the pigmental loose material is subjected to action of the water-soluble salt of the polyvalent metal in the aqueous medium. The treated surface of the particles gains the sizeable cationic surface charge. The salt represents the metal salt of the Group II or the Group III of Periodic table. The registering mediums for the ink-jet printing treated with the coating composition containing the indicated pigment ensure the high density fast-drying and anti-bleeding colorful images with the sufficient water-resistance. The compositions used for creation of the coating also have the advantage pertaining to the net cost and to the improved rheology at the more higher content of the pigment in the coating as compared with the coatings based on the siliceous pigments.

EFFECT: the invention ensures production of the coatings with the indicated pigment having the high density, fast-drying and anti-bleeding colorful images with the sufficient water-resistance at the low net cost, the improved rheology at the more higher content of the pigment in the coatings, as compared with the coatings based on the siliceous pigments.

30 cl, 5 dwg, 7 tbl, 7 ex

FIELD: special compositions.

SUBSTANCE: invention relates to compositions used in preparing heat-protective covers based on silicon-containing ceramic hollow microspheres and able to withstand strong temperature drops. Composition for preparing heat-protective cover comprising hollow ceramic microspheres as a filling agent, a polymeric binding agent, technological additive and water involves hollow ceramic microspheres of specific mass 450-750 kg/m3, hardness value by Mohs scale 5.0-6.0 as a filling agent and in the following distribution of particles by sizes, wt.-%: basis diameter 250-350 mcm, 30-62; diameter 5-10 mcm, 15.0-20.0; diameter 10-30 mcm, 5.0-30.0; diameter 30-50 mcm, 5.0-30.0; diameter 60-100 mcm, 8.0-10.0; diameter 100-250 mcm, 5.0-10.0; as a polymeric binding agent the composition comprises latex chosen from group involving: modified acryl acetate latex, 33-38% latex of copolymer of butadiene, acrylonitrile and methacrylic acid, copolymer of styrene and n-butyl acrylate in the ratio 1:1 by mass; as a technological additive the composition comprises a froth breaker chosen from group comprising: silicon froth breakers, tributyl phosphate, polyester derivatives of fatty acids in the following ratio of components, wt.-%: abovementioned microspheres, 18-32; abovementioned froth breaker, 0.01-1.0; abovementioned binding agent, 8.0-12.0, and water - up to 100. Invention provides expanding assortment of compositions for preparing heat-protective covers, enhancing heat-protecting, heat-physical indices of cover with high uniformity and cohesion strength of cover with a basis, expanding region of working temperature from -60°C to +260°C. Invention can be used in filed of building, machine engineering, aviation, railway transport wherein surfaces require conferring heat-protective properties in exploitation of covers under rigid temperature conditions.

EFFECT: improved and valuable technical properties of composition.

2 tbl

FIELD: chemical industry; printing industry; other industries; methods of production of the composition of the paint including the optically changeable pigments.

SUBSTANCE: the invention may be used in production of the optically changeable pigments. The optically changeable pigment includes the stratified set composed of the different materials, in which, at least, one of the layers represents the reflecting layer and, at least, one of the other layers represents the dielectric layer. At least, one of the surfaces of the indicated layers is subjected to the chemical action. The indicated materials also include, at least, one of the layers, which represents the semitransparent metallic layer made out of chromium and also one or more metals and-or their inorganic compounds. At that the metal and-or its inorganic compound are subject to corrosion. The subjected to the chemical action surface of the reflecting and dielectric layer along the edge of the layering block of the edge structure of the pigment is coated with the passivating agent, which is selected from the group consisting of the organic esters and the fluorinated organic esters of the phosphoric acid, having the following structural formula: (Rf-CH2-CH2-O)xP(O)(OH)y, where Rf=F-(CF2-CF2)z, х=1 or 2, у=2 or 1, х+у=3, z=l-7. The composition of the printing paint includes the binding system, water and the optically changeable pigment. The invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.

EFFECT: the invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.

22 cl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention pertains to ink for an ink-jet printer. Description is given of the ink for an ink-jet printer, containing 62-77 mass % water, 10-18 mass % dye, X (%), water soluble organic substance 1 and 2.0-15 mass %, Y (%), water soluble organic substance 2. Viscosity of the ink ranges from 1 to 5 cP at 25°C, content X (%) of substance 1 and content Y (%) of substance 2 satisfies the relationship in formula (I) and formula (II): (I) 0.15 ≤ Y/X ≤ 0.9; (II) 15 mass % ≤ X+ Y ≤ 32 mass %. Compound 1 is a water-retaining water soluble organic compound, with difference between the water-retention capacity in a surrounding medium at 23°C and humidity of 45% and water-retention capacity in a surrounding medium at 30°C and 80% humidity at 36% or less. Compound 2 is a water soluble organic compound, different from the dye and from the water soluble organic compound 1.

EFFECT: proposed ink sufficiently suppresses the effect of twisting printing material and provides for stable injection.

26 cl, 6 dwg, 6 tbl, 21 ex

FIELD: polymer coatings.

SUBSTANCE: invention relates to using powder composition to coat jet printing materials utilized as visual information carriers. Powder composition contains (i) one or several powder silane-containing polyvinyl alcohols based on copolymers of fully or partially hydrolyzed esters having degree of hydrolysis from 75 to 100 mol % and (ii) one or several water re-dispersible polymer powders based on homopolymers or copolymers of one or several monomers selected from group including nonbranched or branched C1-C15-alkylcarboxylic acid vinyl esters, (meth)acrylic acid esters with C1-C15-alcohols, vinylaromatic compounds, olefins, dienes, and vinyl halides.

EFFECT: enabled manufacture of wear-resistant coatings to coat both paper and polymeric substrates, avoided undesired increase in viscosity during composition preparation procedure, and enabled more flexible variation in contents of solids in chalking mass.

10 cl, 15 ex

FIELD: printing materials.

SUBSTANCE: invention relates to printing ink containing first colorant and second colorant, at least one of the colorants including fluorescent color. First and second colorants are located separately on a printing medium while printing ink ensure obtaining printed image with improved fluorescent properties. Invention further relates to printed image and a method of forming printed image utilizing such ink. Invention solves the problem of reducing fluorescence and improving fluorescent properties by way of separating fluorescence region and colored region as well as by way of formation of area on printing medium wherein points of coagulated first colorant are spread in the region of fixed second colorant so that absorption of fluorescent emission energy from fluorescent colorant is considerably reduced by coexisting colorant involving corresponding technologies. The latter are based on a novel technical conception residing in improvement of characteristics of fluorescent emission of a second colorant used in printing ink including a first fluorescent colorant, which, being excited at specified excitation wavelength, fluoresces within specified wavelength range.

EFFECT: improved fluorescent properties of printed image.

15 cl, 31 dwg, 4 tbl, 33 ex

FIELD: method and device for colored flexography.

SUBSTANCE: method for applying multiple paint layers onto a substrate includes following stages: application onto a substrate of at least one painting layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and including reaction-incapable paint thinner, where applied layer of energy-hardened paint has first viscosity; evaporation of at least a part of reaction-incapable paint thinner from applied paint layer for increasing viscosity of applied layer of energy-hardened paint; application onto substrate and applied layer of energy-hardened paint with increased viscosity of at least one layer of non energy-hardened liquid paint, viscosity of which is less than increased viscosity of previously applied layer of energy-hardened paint; and drying of both paint layers on the substrate. Another variant of method for applying multiple paint layers onto a substrate is differentiated by applied layer of energy-hardened paint having to be of increased viscosity compared to following layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and containing reaction-incapable paint thinner, where viscosity of following layer is less than increased viscosity of energy-hardened paint layer applied beforehand. Also a method is suggested for printing multiple paint layers on a substrate, which includes stage of selection of first and second energy-hardened liquid flexography paint, where each paint contains viscosity controlling reaction-incapable paint thinner, consisting of water in amount of from 5% to 50% of thinner weight, where each paint has viscosity approximately ranging from 30 to 70 centipoises, and stage of serial application of first and second energy-hardened liquid flexography paint onto a substrate to create first and second paint layers, having overlapping parts, where second paint is applied only after at least a part of paint thinner is evaporated in first paint layer. Device for serial application of multiple overlapping paint layers onto a substrate contains substrate route and substrate drive for moving the substrate along a route, where paint application sections are adapted for applying paint onto substrate, which paint includes reaction-incapable paint thinner and has viscosity less than 4000 centipoises, and also management system, which manages transportation of substrate along a route. Viscosity of first layer of liquid paint, applied onto a substrate in one of paint sections, is increased due to evaporation of at least a part of paint thinner from first paint layer to higher viscosity compared to viscosity of second paint, applied on top of first paint layer in next paint section, located at a certain distance from first paint section, up to viscosity, sufficient for "crude" application of second liquid paint layer during transportation of substrate between paint sections.

EFFECT: in suggested methods, relief printing is achieved without insignificant modifications of printing equipment.

4 cl, 2 dwg

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.

EFFECT: enabled image quality and paper surface strength control.

3 cl, 1 tbl, 13 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

EFFECT: improved manufacturability of process.

5 cl, 1 tbl, 54 ex

FIELD: polygraphy.

SUBSTANCE: one invention from a group is related to printing base, being a substrate with oleophilic surface, having Gurley-Hill porosity value greater than 5000s/100ml, while printing paint, imprinted on such base, has offset value of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units. Another invention is related to printing method, which is performed in at least one printing section with use of substrate, having oleophilic surface and being not porous with Gurley-Hill porosity value over 5000s/100ml, and carrier of pigment of printing paint, having value of offset of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units.

EFFECT: improved quality of printing, improved quality of folding, decreased static electricity.

2 cl, 6 dwg, 3 tbl

FIELD: paper-and-pulp industry.

SUBSTANCE: when ground paper is manufactured, it is coated with ink-accepting coating. The latter contains latex binder, water-soluble binder, pigment mixture of amorphous silica with colloidal cationic silica and colloidal alumina, and ink-fixing agent. Coating operation is performed in two steps, weight ratio of coating applied in the first step to that in the second step ranging from 0.34:1 to 0.66:1. Reverse face of base paper is coated by detwisting coating. Further, coating is ennobled via superglazing at pressure in supercalender roll gap 30-75 bar.

EFFECT: improved workability of process and improved quality of paper due to increased surface strength.

4 cl, 7 ex

The invention relates to printing tools and equipment, and in particular to methods and means of die stamping and woodblock character set on the payment documents, goods receipts, accounts, etc

FIELD: chemistry.

SUBSTANCE: invention pertains to ink for an ink-jet printer. Description is given of the ink for an ink-jet printer, containing 62-77 mass % water, 10-18 mass % dye, X (%), water soluble organic substance 1 and 2.0-15 mass %, Y (%), water soluble organic substance 2. Viscosity of the ink ranges from 1 to 5 cP at 25°C, content X (%) of substance 1 and content Y (%) of substance 2 satisfies the relationship in formula (I) and formula (II): (I) 0.15 ≤ Y/X ≤ 0.9; (II) 15 mass % ≤ X+ Y ≤ 32 mass %. Compound 1 is a water-retaining water soluble organic compound, with difference between the water-retention capacity in a surrounding medium at 23°C and humidity of 45% and water-retention capacity in a surrounding medium at 30°C and 80% humidity at 36% or less. Compound 2 is a water soluble organic compound, different from the dye and from the water soluble organic compound 1.

EFFECT: proposed ink sufficiently suppresses the effect of twisting printing material and provides for stable injection.

26 cl, 6 dwg, 6 tbl, 21 ex

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