Universal pigment ink for jet printing with improved image quality

FIELD: printing industry.

SUBSTANCE: ink contains a liquid carrier, which includes water, an organic dissolvent and an organic amine, selected from 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, diethanolamine and their mixtures; and a dye of an acid-sensitive pigment, encapsulated into a polymer, which is a copolymer of sterol, acrylic acid and methacrylic acid or its ether, dispersed in the liquid carrier. Also an ink set is described for jet printing, as well as a method to print images with application of the specified ink.

EFFECT: improved quality of images both on glossy surface and on plain paper.

14 cl, 6 tbl, 6 ex

 

The technical field to which the invention relates

The present invention relates generally to ink compositions for inkjet printing, the ink sets for ink-jet printing and printing pigment ink for ink-jet printing with an acceptable Shine when they are printed on glossy environment, and with acceptable quality when they are printed on plain paper and other non-glossy environment.

The level of technology

There are several reasons that inkjet printing has become a popular way of recording images on surfaces of different environments, especially paper. Some of these reasons include low noise printing, the possibility of high speed printing and multicolor printing. In addition, these benefits can be obtained at a relatively low price for consumers. Although there has been a great improvement in inkjet printing, this improvement is accompanied by increasing demands of consumers in this area, such as high speed, high resolution imaging with full color, high stability, etc. have been developed inks for inkjet printing and printers, there have been several traditional characteristics for comparison when assessing the ink in combination with the surface or base for printing. Such characteristics include the sharpness of the edges and optical raft the awn image on the surface Shine, control bleeding from black in color, drying time of the ink on the substrate, adhesion to the substrate, lack of deviation in the location of the ink droplets, the presence of all dots, resistance of the ink after drying to water and other solvents, the stability during long-term storage, long-term reliability without destroying the handle material or clogging of the tip. Long-term reliability without destroying the handle material or obstruction of the tip become even more important with the advent of money printing that emit smaller amounts of drops. Although the above list of characteristics provides a worthy goal to achieve, there are difficulties associated with satisfying all the above characteristics. Often the inclusion of any component of the ink, designed to meet one of the above characteristics may inhibit other features. Therefore, most commercial ink for use in inkjet printers represent a compromise in an attempt to achieve at least adequate answer to satisfy all of the above requirements.

One of the characteristics of inkjet printing systems, which it is desirable to achieve, refers to the print quality, particularly in relation to Shine when printing colored ink brilliantly on the environment. Often two of the ink, which themselves are brilliant when printed separately, lose their ability to Shine when shared printing on the sheet of glossy protection. In addition, many inks that are acceptable solution to print on glossy environment look bad on non-glossy medium such as ordinary paper. Thus, research continues into developing ink formulations that can be printed with high quality image, even when the ink is inkjet printed as a mixture on the sheet of glossy environments as well as when not printed on glossy environment.

Detailed description of preferred (preferred) option (options)

Before disclosure and description of private embodiments of the present invention should be understood that this invention is not limited to private processes and materials disclosed here, which themselves can vary to some extent. It should also be understood that the terminology used here is used to describe only private options and is not intended to be a limitation that the boundaries of the present invention will be defined by the attached claims and their equivalents.

In the description and application of the present invention will use the following terminology is Oia.

The form of the singular "a", "an" and "the" include plural objects references unless the context clearly stipulates specifically. So, for example, reference to "pigment" includes reference to one or more of such materials.

As is used herein, "liquid vehicle" is defined to include liquid compositions that can be used for delivery of colorants, including pigments, to the base. Liquid carriers known in the art and a wide variety of components of the liquid media may be used in accordance with the variants of implementation of the present invention. These liquid carriers may include a mixture of a variety of different agents, including without limitation, surfactants, auxiliary solvents, buffers, biocides, viscosity modifiers, complexing compounds, stabilizers, and water. Even if by itself, and non-cryogenic liquid medium can also transport other solids, such as polymers, a material that hardens under the action of UV, plasticizers, salts, etc.

As is used herein, "pigment" to refer to a colored particle, which is typically substantially insoluble in the liquid carrier in which it is used.

"Pigment encapsulated in polymer or its derivative refers to pigments that are at least an hour is ichno encapsulated in a polymer or polymer coated, including polymers prepared, for example, styrene, methacrylic acid, methacrylate, acrylic acid and/or acrylate monomers. These polymers can be applied to the pigments to limit the outer shell of the pigment with the formation of a charge, thereby creating a certain tendency to repulsion, which reduces the agglomeration of the pigment particles within the liquid carrier. However, these coatings can also be made sensitive to acid, so that they desire has been rocked by instability when printing on an acidic environment.

The expression "plain paper" includes any uncoated papers, where the paper fibres in the overwhelming number are printed on the outer surface.

The expression "glossy", when it refers to a glossy medium, glossy photo paper, etc. includes a paper substrate that is covered with paperless coating that makes the surface Shine. Typical glossy medium includes a substrate, coated with inorganic porous particles, such as silicon oxide, aluminum oxide, glue, etc. and bound together with polymer-bonded. It should be noted that this environment is covered with the inorganic particles, optional glossy. Matte coating, for example, are not considered as glossy, while the coating from slightly shining up celebrityship R is smatrivayutsya as glossy.

Although the benefits of ink compositions for ink jet printing is described herein primarily in relation to their performance as glossy and flat paper, it should be noted that these ink well show themselves on other types of environment. For example, paper, covered with dull material, do not have similar problems regarding lack luster compared with when the same ink printed on glossy environment; however, can be achieved similar major improvements in the quality when printing on a porous medium, covered with dull material, the improvement achieved when printing on flat paper. In other words, the universality of the ink of the present invention just described and defined in accordance with the performance both on flat paper and glossy media (which is very different types of environments), and the ink as such, described herein, are not limited to print, these two private types of environments.

Concentrations, amounts, and other numerical data may be presented here in a range format. You must understand that such a range format is used merely for convenience and brevity and should be flexibly interpreted to include not only the numerical values listed in detail as range, but also to include all the individual number of the data values or sub-ranges, prisoners within that range as if each numerical value and sub-range will be listed in detail. For example, the mass range from about 1% by weight to about 20% by weight should be interpreted to include not only details listed within a concentration from 1% by weight to about 20% by weight, but also to include individual concentrations such as 2% by weight, 3% by weight, 4% by weight, and sub-ranges such as from 5 mass% to 15 mass%, 10 mass% to 20 mass%, etc.

The expression "about", when it refers to a numerical value or range is interpreted so that concludes values derived from experimental error that occurs during the measurement.

In accordance with the variants of implementation of the present invention, it was found that when printing with pigment ink for inkjet printing on plain paper the dispersion of pigments with high sensitivity to acid can provide the best image quality, at least in part, due to the tendency of the pigment to come out of solution (or destabilize it, or be deposited and remain on the surface of the flat paper. This is due to the fact that a simple paper typically have an acidic pH. Even the so-called "basic" simple paper has a pH that is less than 7. On the contrary, although there are other benefits etc is for drinking, preparing dispersions of pigments, more stable to acid, it was found that the high stability of the pigments does not provide the best image quality on plain paper. This is because the stability of the pigments does not account for the destabilization on the surface of flat paper and ink so tend to be absorbed more deeply into flat paper and other substrates from non-glossy porous medium. Although the dispersion of pigments are more sensitive to acid, good for printing on flat paper, it turns out that they can be bad for dispersions of pigments stable to acid, when printing on glossy media, such as glossy medium coated with inorganic particles. This is partly due to the fact that the paper type is not suitable for absorption of ink into the substrate and pigments stable to acid, which are printed on glossy photo papers, do not have similar disadvantages that they have when they are printed on flat paper. In other words, the advantages obtained by the use of less stable (or sensitive to acid) pigment dispersions for printing on flat paper is partly lost when printing on glossy paper. This problem is especially aggravated when printing two pigment ink for inkjet printing as a mixture of glossy environment. For example, it was found that when printing two different flashing is their ink as a mixture in a brilliant environment for the formation of mixed colors, some ink may be dropped off with the other, resulting in poor color. More precisely, we can consider the printing ink from the Magenta (dark red) and light ink with Magenta (light red) glossy environment. Often, these two colors are mixed when printing skin tones and other painted similar images in order to minimize the graininess in the image. However, by mixing the ink, although the grain size decreases, is lower gloss than when any of the ink is printed separately. This example will spread to the interaction of many different colored ink (two or more) when printing together as a mixture to achieve the right color. Another common example is a mixture of grey and other dyed with pigment inks. Thus, in accordance with the variants of implementation of the present invention, in order to achieve equally good image quality on plain paper and glossy environment, it was found that the use of dispersions of pigments that are sensitive to the acid in the ink for inkjet printing, can provide increased image quality on plain paper and the use of organic amines, one or more of the ink can improve the deposition, which reduces the gloss on glossy environment. Thus, individual inks, which is well performed on plain paper, t is K and glossy photo paper, can be prepared in accordance with these principles.

Without limitation to any particular theory believe that the presence of organic amines may allow a pigmented ink is better to merge together on glossy media, forming a more uniform image, which in itself is brilliant. At the same time, organic amines does not significantly reduce the superior quality of images printed using a flat non-glossy paper or porous paper with a coating. Especially the use of nekaterih organic amines may be functionally in accordance with the variants of implementation of the present invention, including low molecular weight primary, secondary and tertiary amines, macroline, such as Jeffamines, and other organic amines, which are functional in accordance with the variants of implementation of the present invention. Typical organic amines which give acceptable results include triethanolamine (TEA), 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, and/or diethanolamine. In a particular embodiment, triethanolamine or its derivatives are especially used and can act as a buffer between the particles of the dispersed pigment of the multi-component ink, allowing multicomponent drops of ink to blend together in a homogeneous, more n is discontinuous film. In relation to the amount of organic amine, which may be added, in one embodiment, the organic amine, such as triethanolamine, may be represented in the ink for inkjet printing from 0.1 mass% to 5 mass%. In another embodiment, the organic amine may be represented in the ink for inkjet printing from 0.2 mass% to 2 mass%.

With this in mind, the present invention is described for a generic ink for ink-jet printing ink sets for ink-jet printing and printing images with improved quality when you print or on medium, covered with a glossy material, or on plain paper. In the first embodiment, the ink for inkjet printing received for printing on flat paper and the environment, with a glistening material may include a liquid carrier including water, an organic solvent, and an organic amine, and encapsulated in the polymer is sensitive to acid pigment colorant dispersed in a liquid medium.

In another embodiment, the ink set for inkjet printers for printing on flat paper and on medium, covered with a glossy material, may include a first ink for inkjet printing and the second ink for inkjet printing. The first ink for inkjet printing may include a carrier liquid, including water, an organic solvent is, and organic amine, and encapsulated in a polymer that is sensitive to acid pigment colorant dispersed in a liquid carrier. The second ink for inkjet printing may include a pigment dispersion, which comprises an ionic pigment dye or pigment colorant associated with an ionic pigment dispersant.

In another embodiment, a method of printing images may include a first injection of ink for inkjet printing on a substrate medium and the injection of the second ink for inkjet printing on a substrate so that the first ink for inkjet printing and the second ink inkjet become United on the substrate environment. The first ink for inkjet printing may include a liquid carrier including water, an organic solvent, and an organic amine, and encapsulated in the polymer is sensitive to acid pigment colorant dispersed in a liquid carrier. The second ink for inkjet printing may include ionic pigment dye or pigment colorant associated with an ionic pigment dispersant.

The invention described herein is directed to an improved ink to print images using an inkjet printer using a commercially available inkjet printers, such as inkjet printers manufactured by Hewlett Packard Compay, Palo Alto, Canada. Ink for inkjet printing according to the present invention may include colors such as yellow, blue, light blue, red, light red, grey, orange, green, pink, red, blue, black and others known pigment color. Typically, the pigments according to the present invention can be in the amount of from about 5 nm to about 10 microns, and in one aspect can be in the amount of from about 10 nm to about 500 nm, although can be used for sizes outside this range, if the pigment can remain dispersed and to ensure the correct color properties. In one detailed aspect of the present invention, the pigment may include from about 0.1% by weight to about 10% by weight of the ink composition for inkjet printing, and in another embodiment from about 0.5% by weight to about 8% by weight.

Although you can use any color or type of pigment, colored organic pigments and carbon black pigments are given here as an example in accordance with the variants of implementation of the present invention. In one embodiment, the implementation of carbon pigment may be functionalized or encapsulated with a polymeric dispersant. Carbon pigment can be almost any commercially available carbon pigment that provides acceptable optical density is here and characteristics of print. Carbon pigments suitable for use in the present invention include, without limitation, carbon black, graphite, vitreous carbon, charcoal, and combinations thereof. In one aspect of the present invention the carbon pigment is a pigment of carbon black. Such pigments from coal soot can be obtained by known methods, such as channel method, the contact method, furnace method, acytelene method or a thermal method, and commercially available from such vendors as Cabot Corporation, Colombian Chemical Company, Degussa AG, and E.I. DuPont de Nemours and Company. Examples of suitable commercially available include soot No. 2300, No. 900, MCF800, No. 33, No. 40, No. 45, No. 52, MA&MA8, No. 2200B, Raven 1255, Regal 400R, Regal 330R, Regal 660 R, Mogul L, Color Black FW1, Color Black FW18, Color Black S170, Color Black S150, Printex 35 and Printex u Other suitable pigments from coal soot include, without limitation, pigments Cabot, such as MONARCH 1400, MONARCH 1300, MONARCH 1100, MONARCH 1000, MONARCH 900, MONARCH 880, MONARCH 800, MONARCH 700, CAB-O-JET 200 and CAB-O-JET 300; pigments Colombian, such as RAVEN 7000, RAVEN 5750, RAVEN 5250, RAVEN 5000, and RAVEN 3500; Degussa pigments such as Color Black FW 200, RAVEN FW2, RAVEN FW 2V, RAVEN FW 1, RAVEN FW 18, RAVEN S160, RAVEN FW S170, Special Black 6, Special Black 5, Special Black 4A, Special Black 4, PRINTEX U, PRINTEX 140U, PRINTEX V, and PRINTEX 140V.

Alternatively, an organic colored pigments can also be encapsulated with a polymer in accordance with the variants of implementation of the present invention. Typical pigments, to the which are suitable for use in accordance with the variants of implementation of the present invention, include azo pigments such as pigments adopodobny patterns, insoluble azo pigments, condensed azo pigments, and polycyclic pigments, such as phthalocyanine pigments, chinaredorbit pigments, dioxazine pigment and antrahinonovye pigments. Specific pigments that are suitable for use include Pigment Blue 15:3, Pigment Green 36, Pigment Blue 15:6, Pigment Red 177 and/or Pigment Red 208 (DIC); Pigment Red 168, Pigment Violet 23, Pigment Yellow 155 and/or Pigment Violet 19 (from Clariant) and Pigment Red 254 (from Ciba). Examples of other pigments that may be used include C.I. Pigment Yellow 1, C.I. Pigment Yellow 2, C.I. Pigment Yellow 3, C.I. Pigment Yellow 13, C.I. Pigment Yellow 16, C.I. Pigment Yellow 83, Pigment Yellow 74, Pigment Yellow 138, Pigment Yellow 158, Pigment Yellow 128, Pigment Yellow 151 and the like; C.I. Pigment Red 5, C.I. Pigment Red 7, C.I. Pigment Red 12, C.I. Pigment Red 48 (ca), C.I. Pigment Red 48 (mn), C.I. Pigment Red 57 (Ca), C.I. Pigment Red 112, C.I. Pigment Red 112, C.I. Pigment Red 122 and the like; C.I. Pigment Blue 1, C.I. Pigment Blue 2, C.I. Pigment Blue 3, C.I. Pigment Blue 15:3, C.I. Pigment Blue 16, C.I. Pigment Blue 22, C.I. Vat Blue 4, C.I. Vat Blue 6, and the like; and TIPURE R-101, available from Dupond; the pigment of their coal carbon black and other pigments, Executive properties are satisfactory when they are created to the present invention and are considered to be within its scope. Suitable as an example, the pigments disclosed and approved, for example, in U.S. Patent 5,085,698, entitled "Aqueous pigment ink for inkjet printer"; U.S. Patent 5,221,33, entitled "Aqueous pigment ink for inkjet printer"; U.S. Patent 5,302,197, entitled "Ink for inkjet printers, all in the name to E.I. Du Pont de Nomours and Company. Manufacturers of pigments, which provide suitable pigments, which have been listed previously include DIC, Cabot, Orient, BASF, Ciba and Clariant.

Each of the above pigments may be encapsulated copolymer dispersant. For example, in one embodiment, the dye from encapsulated in a polymer that is sensitive to acid pigment may be encapsulated with a styrene copolymer, a copolymer of acrylic acid or acrylate, a copolymer of methacrylic acid or methacrylate, a combination thereof, etc. In one embodiment, the copolymer may be a copolymer of styrene, acrylic acid and methacrylic acid (or its ester). Suitable copolymers may have any average molecular weight which is functional, but in one of the embodiments Mw can be from 5,000 Mw to 20,000. In addition, the dye from encapsulated in a polymer that is sensitive to acid pigment may be encapsulated by a copolymer having an acid number of from 100 to 220 mg KOH/g, or in another embodiment, from 150 to 200 mg KOH/g

In addition, the use of pigment encapsulated in polymer, may contribute to the sensitivity to acids is, as described earlier, which is in accordance with the variants of implementation of the present invention. For example, sensitive to acid polymers used for encapsulation of pigments, usually more likely to collapse, destabiliziruetsya or deposited when printing on plain paper (which usually to some extent zakislenna). Pigments with covalently attached polymer dispersant or covalently attached small molecules are often less likely to be willing to settle on plain paper than encapsulated pigments described here. In one embodiment, the dye from encapsulated in a polymer sensitive pigment can be configured for the formation of flakes in the solution at least at pH 6 and below and, more typically, at least at pH 5 and below. When these pigments have a tendency to flocculating at acidic pH degrees, ink can be stored at about pH 7.5-8 and often can be stored at pH 8-10. When the inks are printed on flat paper, the acidic nature of paper could easily destabilize the surface dye sensitive to acid pigment, thereby providing improved image quality compared to more stable to acid pigments.

It should be noted that although at least some chere the sludge of this ink set for ink-jet printing include copolymer dispersant, which is covered with pigment and other pigments in the ink set for inkjet printing should not be configured in such a manner. For example, other pigments may simply be ionic in nature, such as pigments, which have an ionic charge on the surface such as the surface of the pigments, modified small molecules, the surface of the pigments with the attached polymeric groups, etc.

As described previously, the liquid media can be used to transfer the pigment solids as well as other solids, which can be represented in the ink compositions for ink jet printing according to the present invention. More specifically, the carrier liquid can include water and from 5% by mass to 35% by weight of the total content of the organic solvent together with other arbitrary liquid components. In relation to the total content of organic auxiliary solvent auxiliary solvents for use in the present invention include aliphatic alcohols, aromatic alcohols, diols, glycol ethers, poly(glycol) ethers, lactams, formamide, acetamide, long-chain alcohols, propylene glycol, diethyleneglycol, triethyleneglycol, glycerin, dipropyleneglycol, pickalbatros ethers, glycols, polypropylenglycol, amides, ethers, carboxylic acid is you, esters, organic sulfides, organic sulfoxidov, sulfones, derivatives of alcohols, sorbitol, cellosolve, derivatives ethers, aminoalcohols and ketones. For example, an auxiliary solvent may include primary aliphatic alcohols of 30 carbons or less, secondary aliphatic alcohols of 30 carbons or less, secondary aromatic alcohols of 30 carbons or less, 1,2-diols of 30 carbons or less, 1,3-diols of 30 carbons or less, 1,5-diols of 30 carbons or less, alkalemia ethers of ethylene glycol, alkalemia esters of propylene glycol, alkalemia esters of polyethylene glycol, higher homologues alilovic esters of polyethylene glycol, alkalemia esters of polypropylenglycol, higher homologues alilovic esters of polypropylenglycol, lactams, substituted formamide, unsubstituted formamide, substituted acetamide and the unsubstituted acetamide, but are not limited to. Examples of auxiliary solvents which are preferably used in the practice of this invention include 1,5-pentanediol, 2-Papillion, EG-2, fatty glycol 1 (LEG-1), fatty glycol 7 (LEG-7),2-methyl-2,4-pentanediol, 2-methyl-1,3-propandiol, 1,2-hexanediol, 2-ethyl-2-hydroxymethyl-1,3-propandiol, diethylene glycol, 3-methoxybutanol and 1,3-dimethyl-2-imidazolidinone, but are not limited to them is. Auxiliary solvents may be added to reduce the evaporation of water in the ink to minimize paper jams or other properties of the ink such as viscosity, pH, surface tension, optical density, and print quality. Various buffer agents, such as TRIS buffer or MOPS buffer, can also optionally be used in ink compositions for ink jet printing according to the present invention.

In another aspect of the present invention can be used in a variety of biocides to inhibit the growth of various microorganisms. Several non-limiting examples of suitable biocides include benzoate salt, sorbate salts, commercial products such as NOUSEPT (Nudex, Inc., Department of Huls America), UCARCIDE (Union Carbide), VANCIDE (RT Vanderbilt Co.) and PROXEL (ICI Americas) and other known biocides. Typically, these biocides include less than about 5% by weight of the ink composition for inkjet printing, and often from about 0.05% by weight to about 2% by weight.

In another aspect of the present invention the ink composition for inkjet printing can be essentially free of surfactants. However, such components can be used and may include standard water-soluble surfactants such as fluorinated surfactants, alkylpolyglycoside is, alkylhydroperoxide, polietilenoksidnoy (PEO) block copolymers, acetylenic PEO, PEO esters, PEO amines, PEO amides and caprioli dimetikona. Surfactants, if used, can be present in an amount of from 0.001% by mass to 10% by weight of the ink composition for inkjet printing, and in one of the embodiments can be present in an amount of from 0.001 mass% to 0.1 mass%.

In an additional aspect of the present invention can be included binders, which act to protect the dyes on the substrate. Binders suitable for use in the present invention typically have a molecular weight from about 100 to about 50,000 g/mol. Non-limiting examples include copolymers of styrene and maleic anhydride, polyester, polyester-melamine, copolymers of styrene and acrylic acid, copolymers of styrene, acrylic acid and alkylacrylate, copolymers of styrene and maleic acid, copolymers of styrene, maleic acid and alkylacrylate, copolymers of styrene and methacrylic acid, copolymers of styrene, methacrylic acid and alkylacrylate, copolymers of styrene and Palmyra maleic acid, copolymers of vinylnaphthalene and acrylic acid, copolymers of vinylnaphthalene and maleic acid, copolymers of styrene, acrylic acid and methacry the OIC acid and their derivatives and salts. It should be noted that, when multiple monomers are listed as part of the copolymer, such a designation is a public listing of the monomers present in the copolymer. Other monomers, agents, forming cross-linkage, etc. can also be provided. For example, a copolymer of styrene and maleic anhydride comprises at least two monomer and can include other monomers, too. In addition, it should be noted that if the binder is melkorazdroblennuyu dispersed form, then it is not considered part of a liquid medium, but it is believed that it is a liquid medium.

Examples

The following examples show ways of carrying out the invention currently known best. However, it should be understood that the following is only a sample or illustration of the application of the principles of the present invention. Numerous modifications and alternative compositions, methods and systems may be developed by a specialist without deviating from the essence and scope of the present invention. Attached claims is intended to cover such modifications and alterations. Thus, while the present invention has been described above in detail, the following example gives a further detailed description together is the fact that what today is considered the most practical and preferred variant embodiment of the invention.

Example 1

There were prepared two ink for inkjet printing with Magenta, some with the addition of triethanolamine (TEA), some without, as shown below in table 1.

Table 1
Ink for inkjet printing with Magenta with triethanolamine and no
InkInk with fuchsin 1Ink with fuchsin 2
1Magenta pigment encapsulated in polymer3.00 wt.%3.00 wt.%
2EG6,006,00
Proxel GXL (commercially available biocide from Zeneca)0,150,15
2-pyrrolidone6,006,00
LEG-13,003,00
1,2-hexanediol7,007,00
Zonyl FSO (fluorine surfactant from DuPont)0,190,19
Surfynol CT-1110,650,65
Glycerin5,005,00
2binder1,001,00
Triethanolamine-2,00
Waterthe remaining partthe remaining part
Ink, brought KOH to a pH of 9.2
1The polymer pigment is sensitive to acid copolymer of styrene, acrylic acid and methacrylic acid - an acid number of 155.
2Copolymer of styrene, acrylic acid and butyl acrylate (Mw) from 5,000 to 10,000).

Example 2

There were prepared two yellow ink for inkjet printing, one with the addition of triethanolamine (TEA), one without, as shown below in table 2.

Table 2
Yellow ink with triethanolamine and no
InkYellow ink 1Yellow ink 2
1yellow pigment encapsulated in polymerthe 4.65 wt.%the 4.65 wt.%
2EG6,006,00
Proxel GXL0,150,15
2P6,006,00
LEG-13,003,00
1,2-hexanediol7,007,00
Zonyl FSO0,190,19
Surfynol CT-1110,650,65
Glycerin5,005,00
2binder1,001,00
Triethanol is n 0,002,00
Waterthe remaining partthe remaining part
Ink, brought KOH to a pH of 9.2
1The polymer pigment is sensitive to acid copolymer of styrene, acrylic acid and methacrylic acid - an acid number of 155.
2Copolymer of styrene, acrylic acid and butyl acrylate (Mw) from 5,000 to 10,000).

Example 3

Seven samples of each of the four ink described in example 1 (ink with fuchsin 1 and 2), and in example 2 (yellow ink 1 and 2), were printed on glossy commercial environment Pictorico with different levels of saturation, covering the range from the average saturation (saturation level 1) to very intense saturation (saturation level 7). This data is provided as loss of gloss, which is usually more pronounced at the intense saturation levels. Data on Shine are shown in tables 3A and 3B as follows:

Table 3A
Glitter ink with fuchsin 1 and 2, printed from the of eljnosti
Sample3Glitter ink with fuchsin 1 (0% by weight triethanolamine)3Glitter ink with fuchsin 2 (2% by weight of triethanolamine)
174,074,8
270,373,3
369,375,4
467,675,6
567,476,6
667,876,2
769,676,7
3Values estimated within ±3 (noise).

Table 3B
Shine yellow ink 1 and 2, printed separately
Sample3Glitter ink with fuchsin 1 (0% by weight of triethanolamine is a) 3Glitter ink with fuchsin 2 (2% by weight of triethanolamine)
158,0of 56.4
259,357,0
359,959,2
460,361,8
561,166,8
661,872,3
762,376,0
3Values estimated within ±3 (noise).

As can be seen from tables 3A and 3B, especially at high levels of saturation ink, a significant improvement in gloss is achieved due to the presence of additives triethanolamine.

Example 4

A 50/50 blend by weight of the ink with fuchsin 1 (example 1) and a yellow ink 1 (example 2) was published in seven parts on glossy commercial environment Pictorico at different levels of saturation, covering the range from the average saturation (saturation level 1) Daocheng intense saturation (saturation level 7). This sample sites was a mixture of ink, which does not include triethanolamine in each of the ink.

In addition, a 50/50 blend by weight of the ink from the Magenta 2 (example 1) and a yellow ink 2 (example 2) was published in seven parts on glossy commercial environment Pictorico at different levels of saturation, covering the range from the average saturation (saturation level 1) to very intense saturation (saturation level 7). This sample sites was a mixture of ink, which included the triethanolamine in the ink. These data are shown in table 4 as follows.

Table 4
Glitter mixes ink
Sample3Glitter ink mixture with fuchsin 1/yellow ink 1(0% by weight triethanolamine)3Glitter ink mixture with fuchsin 2/yellow ink 2 (2% by weight of triethanolamine)
159,264,2
257,264,8
355,568,2
455,371,1
554,774,2
654,173,5
755,170,5
3Values estimated within ±3 (noise).

As can be seen by comparing tables 3A and 3B table 4, two different brilliant ink lose a little luster when you print them together. Furthermore, the addition of triethanolamine to one or both of the ink improves this loss of Shine and in some cases raises the levels of Shine up to within the noise level of the ink, which is printed separately with triethanolamine. It should be noted that this example is merely exemplary, and similar results have been confirmed using other inks of different colors for inkjet printing.

Example 5

Three dispersion of pigments encapsulated in the polymer and is sensitive to acid, in the form of diluted ink (blue, scarlet and yellow), having a pH of about 7-8, were acidified with 0,00625 M Hcl to a pH of about 2.5. For comparative purposes, three dispersion stable to acid pigments in the form of razb is undertaken ink (Epson R800 - blue, scarlet and yellow), having an initial pH of about 7-8, were also acidified in a similar way. In order to determine, flocculator whether the pigment adding acid was measured by UV absorption. The results are presented in table 5 as follows

Table 5
The change of absorption in the UV and visible regions (in solution), when added to 0,M HCl to diluted ink
Color4The ink containing the pigment, stable to acid (Epson R800)4Ink containing sensitive to acid pigment
The initial absorption in the UV and visible regions at 330 nmSwap0,720,84
Absorption in the UV and visible regions at 330 nm after 10 minSwap0,720,29
The decrease in absorption in the UV and visible regions after adding acidSwap0%65%
Magenta1,061,29
Absorption in the UV and visible regions at 276 nm after 10 minMagenta1,051,11
The decrease in absorption in the UV and visible regions after adding acidMagenta1%14%
The initial absorption in the UV and visible regions at 465 nmYellow0,610,73
Absorption in the UV and visible regions at 465 nm after 10 minYellow0,610,54
The decrease in absorption in the UV and visible regions after adding acidYellow0%26%
4Ink diluted with distilled water to about 0.05%

As can be seen in table 5, as described above, diluted ink Epson 800 were very stable in the presence of acid, whereas the diluted ink containing feelings is positive for acid pigment, prepared in accordance with the variants of implementation of the present invention (encapsulated in a polymer that is sensitive to acid), have become more sticky or formed flakes when you add the acid, as evidenced by less efficient absorption of UV-light after adding acid. In fact inks containing pigments that are sensitive to acid, became completely unstable in solution at pH 5-6 (and below), while ink Epson R800 remained stable to acid at pH of 2.5. As mentioned here, it was observed that the ink containing the pigment that is sensitive to acid, is really the best color and image quality when printing on plain paper than highly stable pigments (for example, Epson R800).

Example 6

Three dispersion of pigments encapsulated in the polymer and is sensitive to acid, in the form of diluted ink (blue, bright red and yellow), having a pH of about 7-8, were acidified with 0,00625 M Hcl to a pH of about 2.5. For comparative purposes, three dispersion stable to acid pigments in the form of diluted ink (Epson R800 blue, bright red and yellow), having an initial pH of about 7-8, were also acidified in a similar way. In order to determine, flocculator whether the pigment adding acid was measured by UV absorption. In addition, undiluted ink were also is printed on plain paper and tested for color saturation.

The results are presented in table 6 as follows

Table 6
The change of absorption in the UV and visible regions (in solution), when added to 0,M HCl diluted to ink and color saturation undiluted ink
Color4The ink containing the pigment, stable towards acid4Ink containing sensitive to acid pigment
The initial absorption in the UV and visible regions at 330 nm.Swap0,780,84
Absorption in the UV and visible regions at 330 nm after 10 minutesSwap0,760,29
The decrease in absorption in the UV and visible regions after adding acidSwap3%65%
5Color saturation undiluted ink on plain paper HP (2% pigment by weight)Swap50 59
The initial absorption in the UV and visible regions at 276 nmMagenta1,261,38
Absorption in the UV and visible regions at 276 nm after 10 minMagenta1,220,67
The decrease in absorption in the UV and visible regions after adding acidMagenta3%51%
5Color saturation undiluted ink on plain paper HP (1.3% of pigment by weight)Magenta5969
The initial absorption in the UV and visible regions at 465 nmYellow0,680,73
Absorption in the UV and visible regions at 465 nm after 10 minYellow0,680,54
The decrease in absorption in the UV and visible regions after adding acidYellow0% 26%
5Color saturation undiluted ink on plain paper HP (4% pigment by weight)Yellow7383
4Ink diluted with distilled water to about 0.05.
5Color saturation using undiluted ink printed with average density (maximum color saturation).

As can be seen in table 6 described above, the ink containing the pigment, resistant to acid, were very stable in the presence of acid, whereas the ink containing sensitive to acid pigment prepared in accordance with the variants of implementation of the present invention (encapsulated in a polymer that is sensitive to acid), have become more sticky or formed flakes when you add the acid, as evidenced by less efficient absorption of UV-light after adding acid. In fact inks containing pigments that are sensitive to acid, became completely unstable in solution at pH 5-6 (and below), while ink Epson R800 remained stable to acid at pH of 2.5. As mentioned here, it was observed that the ink containing the pigment sensitive to the slot, are really the best color and image quality when printing on plain paper than highly stable pigments. This is partly confirmed by the values of cotoneaster, also shown in table 6, where in each case, the presence-sensitive acid provides superior value cotoneaster.

You must understand that the above-mentioned variants of implementations and adaptations are illustrations of the application of the principles of the present invention. Numerous modifications and alternative devices can be designed without deviating from the essence and scope of the present invention, at the same time the present invention shown in the drawings and described above together with typical variant embodiment of the invention.

1. Ink for inkjet printers designed to print on plain paper and coated with a glossy material containing:
a liquid carrier comprising water, an organic solvent and an organic amine selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, diethanolamine and mixtures thereof; and
dye sensitive to acid pigment encapsulated in polymer dispersed in a liquid carrier, and the polymer with encapsulated dye is a copolymer of styrene, acrylic acid and metak the sludge acid or its ester, having a weighted average molecular weight Mw of from 5000 to 20000.

2. Ink for inkjet printing according to claim 1, where the organic amine is present in the ink for inkjet printing in quantities of from 0.1 mass% to 5 mass%.

3. Ink for inkjet printing according to claim 1, where the pigment colorant encapsulated polymer having an acid number of from 100 to 220 mg KOH/g

4. Ink for inkjet printing according to claim 1, where the dye sensitive to acid pigment encapsulated in polymer, flocculent in solution at pH 6 and below.

5. Ink for inkjet printing according to claim 1, where the dye sensitive to acid pigment encapsulated in polymer, destabilized when printing on plain paper so that remains on the surface of flat paper.

6. Ink for inkjet printing according to claim 1, where the ink for inkjet printing also include a polymeric binder, prepared using at least one of the same monomers used to prepare the dye sensitive to acid pigment encapsulated in polymer.

7. Ink set for inkjet printers designed to print on plain paper and coated with a glossy material, including a first ink for inkjet printing according to one of claims 1 to 6, and the second ink comprising a dispersion of a pigment.

8. Ink set according to claim 7,where the pigment dispersion of the second ink for inkjet printing - this dye sensitive to acid pigment encapsulated in polymer.

9. Ink set according to claim 7, where the second ink for inkjet printing also include organic amine.

10. The method of printing images, including:
a) injecting a first ink for inkjet printing on a substrate environment, with the specified first ink for inkjet printing include:
i) a liquid carrier comprising water, an organic solvent and an organic amine, and
ii) a dye sensitive to acid pigment encapsulated in polymer dispersed in the liquid carrier; and
b) injection of the second ink for inkjet printing on a substrate medium so that the ink for inkjet printing and the second ink inkjet become mixed on the substrate environment.

11. The method according to claim 10, where the pigment dispersion of the second ink for inkjet printing is a dye sensitive to acid pigment encapsulated in polymer.

12. The method according to claim 10, where the second ink for inkjet printing include organic amine.

13. The method according to claim 10, where the organic amine selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, diethanolamine and mixtures thereof.

14. The method according to claim 10, where the dye sensitive to acid pigment encapsulated in polymer precipitates when printing on p is astou paper.



 

Same patents:

FIELD: printing industry.

SUBSTANCE: dye composition for jet recording is proposed, containing a ground pigment, a surfactant and a system of non-aqueous dissolvents. The system of non-aqueous dissolvents includes 1) from around 50 wt % to around 95 wt % of the main system of co-solvents, selected from a group of ethers of propylene glycol, acetates of glycol ether, ketones and esters, having surface tension of less than 32 dyne/cm (32x10-5 N/cm) at 25°C; 2) from around 1 wt % to around 30 wt % of the second system of co-solvents selected from a group of n-ethyl pyrrolidone, propylene carbonate, N-methyl pyrrolidone, methyl ester of lactic acid, 1,3-butanediol and glyceryl acetate, having surface tension of more than 32 dyne/cm (32x10-5 N/cm) at 25°C; 3) from around 1 wt % to around 10 wt % gamma-butyrolacton; 4) at least 2 wt % of resin dissolved in the dye composition. Also a group of dyes is proposed, containing the specified dye composition, as well as a method of images printing.

EFFECT: higher speed of dye drying, its stability to fading and improved spreading of a raster dot.

13 cl, 7 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention describes a dustless powdered pigment composition which is essentially free from binder substances and contains: at least 60 wt % of at least one nacreous pigment, 1-15 wt % non-ionic monomeric wetting substance and/or polysiloxane-based non-ionic wetting substance and 1-39 wt % solvent or mixture of solvents, wherein the total amount of separate components equals 100 wt %. Said non-ionic wetting substance contains OH groups and has hydroxyl number from 30 to 150 mg KOH/g of wetting substance, preferably from 50 to 120 mg KOH/g of wetting substance. The invention also describes a method of preparing the pigment composition and use thereof.

EFFECT: use of disclosed dustless pigment composition in printing ink enables to obtain prints with high resistance to wet treatment.

16 cl, 1 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to reactive metal-complex azo dyes, specifically to reactive dyes of formula where R1 is hydrogen, (R2)5 is a nitro group, X is chlorine, T is a radical of formula , ,

or

,

where (R3)0-2 -0, Z is a vinyl or -CH2-CH2-U, U is a group removable in an alkaline medium, Q - -CH(Hal)-CH2-Hal or -C(Hal)=-CH2, Hal is a halogen, s equals 0 or 1.

EFFECT: disclosed dyes have high resistance to wet processing, especially when dyeing or printing synthetic polyamide fibre materials.

7 cl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for marking substrates. The invention describes a composition for marking substrates, which contains 0.01-50 wt % colourant, 0.01-50 wt % metal salt and carboxylic acid, 1-80 wt % binder and 1-99 wt % organic solvent. Also described is a method of preparing the said composition, a substrate coated with the said composition and a method of marking substrates using the said compositions. The disclosed composition is based on using readily accessible carboxylic acid salts which can not be coloured before exposure to effects of energy.

EFFECT: composition enables to obtain semi-transparent or transparent coatings with high intensity and brightness.

9 cl, 14 ex

FIELD: printing.

SUBSTANCE: there is described composition of inks for jet printers including jet forming thinner, containing organic cosolvents, surfactant and buffer solution, the set of solid pigments samodispergirovannyh in this diluent, and a complex poluefir and styrene maleic anhydride (SMA), dispersed in this diluent. System for printing images on a substrate is also described, including the printing head, filled with inks able to form jet.

EFFECT: offered inks provides decrease in a time of drying at achievement of a sharp image and decrease in quantity of surfactants or wetting agent or their absence in inks on the basis of black pigment.

10 cl, 5 dwg, 3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to liquids for holding aqueous ink on paper for jet printing. A liquid is described for holding water-based ink onto paper, containing a non-curling co-solvent in form of an inner salt, with a sp3-hybrid nitrogen cation and associated anionic charge, insulated on the oxygen anion, directly bonded to the sp3-hybrid nitrogen cation, or insulated between oxygen atoms of a carboxylate group, and is a compound which contains a group chosen from ammonium-N-oxide, N, N, N-trimethylglycinate and amino acid. Described also is use of the said liquid for holding ink on paper to prevent paper from curling during printing.

EFFECT: obtaining liquid for holding water-based ink onto paper, which efficiently reduces curling and deformation of printing paper.

14 cl, 9 tbl, 7 ex

FIELD: physics; image processing.

SUBSTANCE: present invention pertains to a protective element for counterfeit protected paper, valuable documents etc. as well as the counterfeit protected paper and valuable documents, method of making such a protective element, printing ink containing pigment with variable optical properties and method of making such printing ink. The protective element contains a thin-layer element with a colour tilt effect, consisting of a reflecting layer, absorbing layer and an intermediate layer between the reflecting layer and the absorbing layer. The intermediate layer is formed by the printing layer, containing dispersed particles with monomodal or oligomodal size distribution.

EFFECT: obtaining a simple protective element which can be made cheaply and which has high level of security from counterfeit.

62 cl, 12 dwg

FIELD: printing technology.

SUBSTANCE: paint for ink-jet printing contains synthetic food colourant, glycerin and sodium dodecylbenzenesulfonate as surface active substance, sorbit acid as preservation agent, liquid ammonia, isopropyl alcohol and distilled water. Environmentally clear, affordable and cheap components are used as painting ingredients.

EFFECT: four-colour printing with fast paint setting on paper; compatibility with any printing units and prevention of contacting printing units damage.

1 tbl, 3 ex

FIELD: print engineering.

SUBSTANCE: invention provides ink containing first fluorescent color material emitting fluorescence at specified emission wavelength used for measurement or determination of excitement at specified excitement wavelength; and second fluorescent color material emitting fluorescence when excited at specified excitement wavelength, said second color material being contained in larger amount than said first color material. To obtain fluorescence at desired emission wavelength, excitement spectrum of the first color material in ink should have peak wavelength range adjoining specified fluorescent wavelength, and emission fluorescence spectrum of the second color material has emission wavelength range that includes at least above-mentioned peak wavelength range.

EFFECT: enhanced fluorescence intensity due to presence of several fluorescent coloring substances.

9 cl, 26 dwg, 3 tbl, 6 ex

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: chemistry.

SUBSTANCE: reaction liquid used with ink contains a dye and which destabilises the dissolved state or dispersion state of the dye in the ink when in contact with ink on a printing carrier. The reaction liquid contains at least calcium ions, glycerin and polyethylene glycol with average molecular weight between 200 and 1000 inclusively. Content of calcium ions A (wt %) lies between 2.7 wt % and 4.3 wt % inclusively per total weight of the reaction liquid. Total content of glycerin B (wt %) and polyethylene glycol C (wt %) per total weight of the reaction liquid is at least 6 times more and not more than 11 times greater than content of calcium ions A (wt %). The ratio of content of glycerin B (wt %) and total content of glycerin B (wt %) and content of polyethylene glycol C (wt %), (B/(B+C)), lies between 0.3 and 0.7 inclusively.

EFFECT: invention provides high quality of the image obtained on printing material, and also avoids deposit formation.

9 cl, 6 dwg, 6 tbl

FIELD: printing.

SUBSTANCE: ink jet compositions are described containing two liquids: the first liquid contains anionic colouring agent and anionic pigment at a weight relationship 0.1-0.5:3 accordingly; and the second liquid containing the acid fixing fluid. Note that acid fixing fluid is at pH from about 2 to 6, provided with carboxylic acid in the acid fixing fluid, and contains a cationic polymer which has a configuration, allowing to react with anionic colouring agent and anionic pigment. Carboxylic acid has a configuration providing the protonation of anionic colouring agent and anionic pigment in essence simultaneously with interacting cation of polymer with anionic colouring agent and anionic pigment. There are also presented: a way of printing of images with use ink jet compositions; the jet printer and the device for printing of images with use of specified ink jet compositions.

EFFECT: images perling level decrease at drawing on a paper of a printing ink and the acid fixing fluid.

31 cl, 2 dwg, 2 tbl, 3 ex

FIELD: polygraphy.

SUBSTANCE: ink cartridge comprises printing head for thermal jet printing. The said printing head incorporates element to generate heat for ejecting ink out through appropriate orifice. Aforesaid element has protective layer on its surface in contact with inks, that comprises at least one layer selected from the group consisting of silicon oxide, silicon nitride and silicon carbide. Note that inks contain a substance that dissolves the protective layer and compound described by formula (R2)nA-…-N(R1)C(O)R3(R4)-(A), where A represents alkylen or alkenylen that forms a ring with nitrogen atom. It contains also carbonyl group and R3, R1 and R4, representing hydrogen atom, hydroxyl, alkyl, alkenylen, acyl, carbamoyl, carboxyl or sulphonyl. R2 stands for a group related with arbitrary carbon atom A, and represents hydrogen atom, hydroxyl, alkyl, alkenylen, acyl, carbamoyl, carboxyl or sulphonyl. n varies from 0 to 4, while R3 stands for carbon or nitrogen atom. Content of X (% wt.) of the compound satisfies the ratio 1≤X≤30.

EFFECT: prevention deterioration of images, stability of printing.

8 cl, 9 dwg, 9 tbl

FIELD: correct distribution of ink points of the respective colors on printing environment on printing on it of the color image within a wide range of natural colors.

SUBSTANCE: the printing system has a printer that produces points of a great number of various inks for various inks for image printing, and a printer controller that fed control information to the mentioned printer for control of production of points of a great number of various inks. The printing controller has an assembly for determination of the conditions of ejection of drops of a great number of the main colored and dark inks making use of the input video data, area of the additional length of the light absorption wave, and a unit of output of control information, which produces information for the printer. The printer has an input unit of control information, which obtains control information for determination of the conditions of ejection of the drops of the great number of the main colored black an inks and dark inks, as well as a unit for formation of points, which produces points of a great number of the main colored and dark inks.

EFFECT: enhanced degree of freedom at determination of the conditions of ejection of drops of the respective ink, reduced amount of consumed ink, provided high quality of final printed image.

51 cl, 52 dwg

FIELD: correct distribution of ink points of the respective colors on printing environment on printing on it of the color image within a wide range of natural colors.

SUBSTANCE: the printing system has a printer that produces points of a great number of various inks for various inks for image printing, and a printer controller that fed control information to the mentioned printer for control of production of points of a great number of various inks. The printing controller has an assembly for determination of the conditions of ejection of drops of a great number of the main colored and dark inks making use of the input video data, area of the additional length of the light absorption wave, and a unit of output of control information, which produces information for the printer. The printer has an input unit of control information, which obtains control information for determination of the conditions of ejection of the drops of the great number of the main colored black an inks and dark inks, as well as a unit for formation of points, which produces points of a great number of the main colored and dark inks.

EFFECT: enhanced degree of freedom at determination of the conditions of ejection of drops of the respective ink, reduced amount of consumed ink, provided high quality of final printed image.

51 cl, 52 dwg

FIELD: polygraphy.

SUBSTANCE: ink cartridge comprises printing head for thermal jet printing. The said printing head incorporates element to generate heat for ejecting ink out through appropriate orifice. Aforesaid element has protective layer on its surface in contact with inks, that comprises at least one layer selected from the group consisting of silicon oxide, silicon nitride and silicon carbide. Note that inks contain a substance that dissolves the protective layer and compound described by formula (R2)nA-…-N(R1)C(O)R3(R4)-(A), where A represents alkylen or alkenylen that forms a ring with nitrogen atom. It contains also carbonyl group and R3, R1 and R4, representing hydrogen atom, hydroxyl, alkyl, alkenylen, acyl, carbamoyl, carboxyl or sulphonyl. R2 stands for a group related with arbitrary carbon atom A, and represents hydrogen atom, hydroxyl, alkyl, alkenylen, acyl, carbamoyl, carboxyl or sulphonyl. n varies from 0 to 4, while R3 stands for carbon or nitrogen atom. Content of X (% wt.) of the compound satisfies the ratio 1≤X≤30.

EFFECT: prevention deterioration of images, stability of printing.

8 cl, 9 dwg, 9 tbl

FIELD: printing.

SUBSTANCE: ink jet compositions are described containing two liquids: the first liquid contains anionic colouring agent and anionic pigment at a weight relationship 0.1-0.5:3 accordingly; and the second liquid containing the acid fixing fluid. Note that acid fixing fluid is at pH from about 2 to 6, provided with carboxylic acid in the acid fixing fluid, and contains a cationic polymer which has a configuration, allowing to react with anionic colouring agent and anionic pigment. Carboxylic acid has a configuration providing the protonation of anionic colouring agent and anionic pigment in essence simultaneously with interacting cation of polymer with anionic colouring agent and anionic pigment. There are also presented: a way of printing of images with use ink jet compositions; the jet printer and the device for printing of images with use of specified ink jet compositions.

EFFECT: images perling level decrease at drawing on a paper of a printing ink and the acid fixing fluid.

31 cl, 2 dwg, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: reaction liquid used with ink contains a dye and which destabilises the dissolved state or dispersion state of the dye in the ink when in contact with ink on a printing carrier. The reaction liquid contains at least calcium ions, glycerin and polyethylene glycol with average molecular weight between 200 and 1000 inclusively. Content of calcium ions A (wt %) lies between 2.7 wt % and 4.3 wt % inclusively per total weight of the reaction liquid. Total content of glycerin B (wt %) and polyethylene glycol C (wt %) per total weight of the reaction liquid is at least 6 times more and not more than 11 times greater than content of calcium ions A (wt %). The ratio of content of glycerin B (wt %) and total content of glycerin B (wt %) and content of polyethylene glycol C (wt %), (B/(B+C)), lies between 0.3 and 0.7 inclusively.

EFFECT: invention provides high quality of the image obtained on printing material, and also avoids deposit formation.

9 cl, 6 dwg, 6 tbl

FIELD: printing industry.

SUBSTANCE: ink contains a liquid carrier, which includes water, an organic dissolvent and an organic amine, selected from 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, diethanolamine and their mixtures; and a dye of an acid-sensitive pigment, encapsulated into a polymer, which is a copolymer of sterol, acrylic acid and methacrylic acid or its ether, dispersed in the liquid carrier. Also an ink set is described for jet printing, as well as a method to print images with application of the specified ink.

EFFECT: improved quality of images both on glossy surface and on plain paper.

14 cl, 6 tbl, 6 ex

FIELD: printing.

SUBSTANCE: method of calibration of the ink jet printing device with a print head is proposed, which comprises the ink ejection nozzles adjustable by the control signal. At that before the onset of the provided process of printing using the ink jet printing device, the specified calibration raster is printed, based on the printed calibration raster the value of the measured parameter characterising applying the colour is determined, and using this value obtained of the measured parameter by fitting the control signal the amount of ink discharge on the point of the image is calibrated.

EFFECT: proposed invention provides a method of calibration of the ink jet printing device with maximum degree of elimination of metamerism.

16 cl, 4 dwg

Printing carriage // 2553964

FIELD: printing.

SUBSTANCE: method and device for applying a colorant onto a continuously moving substrate in the form of first and second transverse parts is implemented by equipping with the printing carriage having a first set of inkjet print heads and a second set of inkjet print heads. The carriage is moved transversely along the substrate in the forward pass, applying the first and second parts by means of the first and second plurality of inkjet print heads, respectively, and is subsequently moved along the substrate in the reverse pass. The first and second sets of inkjet print heads are set so that the first and second parts complement to each other both in the forward and the return path to provide generally complete coverage of the substrate.

EFFECT: parts which complement to each other can be applied by one print head.

32 cl, 13 dwg

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