Ink for jet printing, ink set, jet printing method, ink cartridge, printing unit and printing device for jet printing

FIELD: polygraphic industry.

SUBSTANCE: ink for jet printing is described including water, watersoluble organic solvent and coloring substance which is phthalocyanine compound. Content of specified coloring substance is in the range of 0.5 wt % ≤ content < 3.0 wt % relative to ink weight. Watersoluble organic solvent includes 2-pyrrolidone in amount of 50.0% or more relative to ink weight. Value of dispersion distance d75, measured using small angle X-ray scattering method for molecular aggregates in ink corresponds to 75% of dispersion distance distribution. Suggested ink is high resistant to ambient gases, to coloring substance aggregation and provides bronze play-resistant images.

EFFECT: getting ink that is high resistant to ambient gases, to coloring substance aggregation and provides bronze play-resistant images.

12 cl, 9 dwg, 9 tbl, 8 ex

 

Background of invention

The technical field to which the invention relates.

The present invention relates to inks for inkjet printing, which have high resistance to surrounding gases and provide high-quality image in which the appearance of the metal layer, the so - called phenomenon of bronze shimmer - suppressed even in the case where the printing ink on the printed media information. The present invention also relates to an ink set, method of inkjet printing, ink cartridge, pachatusan unit and the printer inkjet, all of which using the above mentioned ink for inkjet printing.

Prior art

Method of inkjet printing is a printing method involving applying droplets of ink on any of the printed media, such as ordinary paper and glossy media to form images, and quickly found wide application due to the reduction of its costs and provide them with increased print speed. With the rapid proliferation of digital cameras and cameras, as well as improving the quality of the images obtained in this way, he has found widespread use as a method of displaying photographic images, Travnikov the photo obtained with silver halide.

In recent years, the image quality has increased not only due to the ultimate reduction of the size of ink droplets and improve the color gamut provided with the introduction of multi-color ink. Meanwhile, demand in the coloring material and the ink has grown, so have become more stringent requirements with regard to improving the ability to display color and reliability related to the prevention of clogging and ink ejection stability.

In comparison with photograph, obtained by using silver halide, a method of inkjet printing creates problems, for example, in the sense of sustainability save the image of the finished printed product. Generally speaking, a printed product obtained by a method of inkjet printing, sustainability, saving the image is inferior to the pictures, obtained by using silver halide, and causes the problem lies in the fact that the coloring material printed on the product tends to deteriorate, which causes a change in the color tone and discoloration of the image when printed product is exposed to light, humidity, heat, ambient gases present in the air, etc. for a long period of time. In particular, for well-known method of inkjet printing remained urgent matters is to increase the resistance to the surrounding gases to the level of the pictures, obtained with silver halide. Among the shades used in inks for inkjet printing, yellow, bright red and blue, the least resistance to the surrounding gases has blue. Therefore, increasing the resistance of blue ink to the surrounding gases to levels comparable with the level of resistance to yellow or bright red ink, is an important issue in the process of inkjet printing.

Molecular skeletons of coloring materials of the ink for inkjet printing, having a blue hue, can approximately be divided into molecular phthalocyanine skeleton and molecular skeleton triphenylmethane. Typical coloring material with the first of these molecular cages are specified in the reference Colour index (C.I.) direct dyes blue (Direct Blue) under the numbers 86 and 87 and 199 (C.I. Direct Blue 86, 87 and 199). Typical coloring material with the last-mentioned molecular frameworks are specified in the reference dye (C.I.) acid blue dye (Acid Blue) under number 9 (C.I. Acid Blue 9).

Generally speaking, the coloring material based on phthalocyanine differs in that it has excellent light fastness as compared with the coloring material on the basis of triphenylmethane. In addition, the coloring material based on phthalocyanine has the properties of high the moisture resistance or heat resistance and has a high ability to display color, consequently such coloring material is widely used as a coloring material of the ink for inkjet printing.

However, the coloring material based on phthalocyanine has a slight resistance to the surrounding gases (such as ozone, NOxor SO2)presence of air, particularly to gaseous ozone. In particular, in the printed product obtained by applying a coloring material on the printed media information having the ink absorbing layer containing an inorganic substance such as alumina or silica, the resistance is significantly low, due to which it becomes noticeable discoloration, when the print product is left in the room for a long period of time. To improve resistance to surrounding gases is proposed to be added to the ink of various compounds (see, for example, Japanese laid patent application No. N-171085, lined with Japanese patent application No. H11-29729, lined with Japanese patent application No. N10-130517-lined Japanese patent application No. 2000-303009 and published Japanese patent application No. 2002-249677). However, none of these publications is not allowed to achieve compatibility adequate ability to display color and high resistance to surrounding gases in the ink for inkjet printing.

Paint the second material based on phthalocyanine causes another problem, that is, the metallic luster of the so - called phenomenon of bronze shimmer in the properties of the strong aggregation of coloring material. When the printed product occurs the phenomenon bronze shimmer, change inherent in this printed product of the optical properties of reflection. As a result, the property of the manifestations of the color and hue of the image is noticeably change that, in turn, leads to a significant reduction of image quality. Believe that the phenomenon bronze tint caused by aggregation of coloring material on the surface of the carrier printed information, for example because of the properties of the strong aggregation of coloring material in the ink and reducing the permeability of the ink in the printed media information when applying ink to the media printed information. In particular, the coloring material with the amino group introduced in its molecule with the aim of improving resistance to surrounding gases, or ink containing a coloring material having a low solubility in water, show a significant tendency to cause the phenomenon of bronze shimmer.

For example, it is proposed to use a specific coloring material based on phthalocyanine to increase the resistance to the surrounding gas (see, for example, Japanese patent No. 2942319). Use concr the spas coloring material based on phthalocyanine increases resistance to surrounding gases, that is one of the advantages of coloring material based on phthalocyanine, however, in the above sentence says nothing about the appearance of the bronze shimmer, as a result it is not clear what the resistance of the coloring material to the surrounding gases. In other words, the compatibility of the resistance phenomenon bronze shimmer (resistance to bronze shimmer) and resistance to surrounding gases has not yet been reached.

So be sure to search for opportunities ink for inkjet printers using dye-based material phthalocyanine to get ink, excellent property manifestations color that is highly resistant to surrounding gases and suppressing the occurrence of the bronze phenomenon of the tide.

Summary of the invention

In view of the above problems, the authors of the present invention have conducted extensive studies. In the result, the inventors found that the ink for inkjet printing, excellent property manifestations color that is highly resistant to surrounding gases and is capable of providing an image excellent in resistance to the bronze sheen, can be developed using the specific coloring material based on phthalocyanine and suppression properties of aggregation of coloring material that comprised the focus of the present invention.

Therefore, the present invention is to develop an ink for inkjet printing, excellent property manifestations color that is highly resistant to surrounding gases and is capable of providing an image excellent in resistance to the bronze sheen.

Other objectives of the present invention consist in the development of the printing method, the printing unit, ink cartridge and a printing device for inkjet printers, each of which using the above mentioned ink for inkjet printing.

The above problems are solved by using the present invention described below. That is, in accordance with one aspect of the present invention proposed an ink for inkjet printing containing at least water, a water-soluble organic solvent and a coloring material, and a coloring material is a compound represented by the following General formula (I)or its salt content (wt.%) coloring material is in the range of 0.5 wt.% ≤ the content < 3.0 wt.% with respect to the total mass of the ink for inkjet printing and the content (wt.%) 2-pyrrolidone in water-soluble organic solvent is 50.0% or more with respect to content (wt.%) coloring material, and in the distribution of the dispersion distance, metering the frame by way of small-angle x-ray scattering, molecular aggregates in the ink for inkjet printing, the concentration of the coloring material which is adjusted to 0.5 wt.%, the value of d75the dispersion distance corresponding to 75% of the distribution is in the range 6,70 nm ≤ d75≤ or 10.60 nm:

General formula (I)

(where M represents an alkaline metal or ammonium; each of the radicals R1and R2independently represents a hydrogen atom, a sulfonic group or a carboxyl group (provided that R1and R2are not simultaneously a hydrogen atom), Y represents a chlorine atom, hydroxyl group, amino group or monoalkylamines or dialkylamines, l represents a number from 0 to 2, m represents a number from 1 to 3 and n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4), and the provisions, which contain the substituents are provisions 4 or 4').

In accordance with another aspect of the present invention proposed an ink for inkjet printing containing at least water, a water-soluble organic solvent and a coloring material, and a coloring material is a compound represented by the following General formula (I)or its salt content (wt.%) coloring material is in the range of 0.5 wt.% ≤ the content < 3,0 the AC.% with respect to the total mass of the ink for inkjet printing and the content (wt.%) 2-pyrrolidone in water-soluble organic solvent is 50.0% or more with respect to content (wt.%) coloring material, and wavelength (λmax), the maximum absorption is obtained by measuring the absorptive capacity of the ink prepared by dilution of the ink for inkjet printing 2000 times, is in the range 608,0 nm ≤ λmax ≤ 613,0 nm:

General formula (I)

(where M represents an alkaline metal or ammonium; each of the radicals R1and R2independently represents a hydrogen atom, a sulfonic group or a carboxyl group (provided that R1and R2are not simultaneously a hydrogen atom), Y represents a chlorine atom, hydroxyl group, amino group or monoalkylamines or dialkylamines, l represents a number from 0 to 2, m represents a number from 1 to 3 and n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4), and the provisions, which contain the substituents are provisions 4 or 4').

In another aspect of the ink for inkjet printing coloring material is a compound represented by the following General formula (II)or its salt:

General formula (II)

(where M represents an alkaline metal or ammonium ion, l represents a number from 0 to 2, m represents a number from 1 to 3, and n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4), and the provisions that have to cover the ate, are the provisions of 4 or 4').

In accordance with another aspect of the present invention, a method of inkjet printing, providing for the ejection of ink by way of creating a jet of ink, these inks are the above-described ink for inkjet printing.

In accordance with another aspect of the present invention proposed an ink cartridge, comprising storing the ink portion for storing ink, these inks are the above-described ink for inkjet printing.

In accordance with another aspect of the present invention proposed a printing unit comprising storing the ink portion for storing ink and a printhead to eject ink, these inks are the above-described ink for inkjet printing.

In accordance with another aspect of the present invention proposed printer inkjet, containing stores ink portion for storing ink and a printhead to eject ink, these inks are the above-described ink for inkjet printing.

In accordance with the present invention it is possible to develop inks for inkjet printing, excellent property manifestations color that is highly resistant to surrounding gases and sposobnost image, excellent in resistance to the bronze sheen.

In accordance with the present invention it is possible to develop a method of inkjet printing, the ink cartridge, the printing unit and a printing device for inkjet printers, each of which using the above mentioned ink for inkjet printing.

Brief description of drawings

Figure 1 shows an image illustrating the principle of measurement by the method of small angle x-ray scattering;

figure 2 presents a profile small-angle x-ray scattering for each coloring material based on phthalocyanine and coloring material on the basis of triphenylmethane;

figure 3 presents a schematic diagram of the dispersion of the distance between molecular aggregates of the coloring material based on phthalocyanine;

4 shows a perspective image of the printing device;

figure 5 presents the image of the mechanical parts of the printing device;

figure 6 presents a cross-section of the printing device;

figure 7 presents a perspective representation illustrating the state in which the capacity of the ink are mounted on the head cartridge;

on Fig presents a perspective image with a spatial separation of the parts of the head cartridge; and

figure 9 shows a front view illustrating the substrate with the printed elements on the head cartridge.

Description of the preferred embodiments

Below is a more detailed description of the present invention in the context of the preferred embodiments.

In the present invention, when a coloring material is a salt causes dissociation of this salt with the formation of ions in the ink, and this state for convenience characterized by the use of the phrase "contains salt.

Ink

Below is a detailed description of the components included in the ink composition for inkjet printing (sometimes hereinafter referred to simply as "ink")of the present invention.

Among the yellow ink, bright red ink and blue ink, each of which are widely used as ink for inkjet printing, specifically blue ink tends to have a poor resistance to the surrounding gases. To cope with the problem of resistance blue ink to the surrounding gases, the present invention aims at the development of blue ink, in which, when the product obtained by these blue ink is exposed to the environment having a temperature of 40°C, humidity 55%, and the concentration of gaseous ozone 2 parts per million for 20 hours, and the optical density in the reflected light with 50%fill factor at which ASDE printed product is 83% or more of the optical density in the reflected light with 50%fill factor plot printed product before exposure. Printed product obtained with the use of yellow ink and bright red ink, has excellent resistance to the content of the surrounding gas, in which the above conditions of exposure retained optical density in the reflected light component 83%. Therefore, by using blue ink, in which the above conditions of exposure retained optical density in the reflected light component 83%, and each of the yellow ink and bright red ink offer superior resistance to surrounding gases, it is possible to achieve excellent image resistance during storage.

Coloring material

The connection represented by the General formula (I)or its salt

Ink corresponding to the invention, must contain the compound represented by the following General formula (I)or its salt. The compound represented by the following General formula (I)or its salt is a phthalocyanine derivative, characterized in that it has a blue tint and is excellent in resistance to surrounding gases.

General formula (I)

(In the General formula (I), M represents an alkaline metal or ammonium; each of the radicals R1and R2independently represents a hydrogen atom, a sulfonic group or carboxyl gr the foam (if what R1and R2are not simultaneously a hydrogen atom), Y represents a chlorine atom, hydroxyl group, amino group or monoalkylamines or dialkylamines, l represents a number from 0 to 2, m represents a number from 1 to 3 and n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4), and the provisions, which contain the substituents are provisions 4 or 4').

Generally speaking, during the synthesis of the phthalocyanine derivative, it often inevitably includes isomers in terms of substitution, which is in different positions, which contain the substituents Rn(n is a number from 1 to 16) in the General formula (III) (position of the carbon atoms on the benzene rings, which are connected with the radicals R1-R16defined as position 1 - position 16, respectively). However, in the General case, the isomers in the provisions of substitution do not differ from each other, and this often leads to obtaining the same derivative.

General formula (III)

The coloring material used in the present invention is a phthalocyanine derivative obtained by selective introduction of unsubstituted sulfamoyl group (-SO2NH2or substituted sulfamoyl groups (groups represented by the General formula (IV)) in each of clauses 4 and the state is 4' in the General formula (I) (R 2, R3, R6, R7, R10, R11, R14and R15in the General formula (III)). The authors of the present invention found that a printed product obtained by the use of ink containing such a compound, is extremely excellent in resistance to surrounding gases.

Used in the present invention, the compound represented by the General formula (I)or its salt synthesized, using as starting material the compound of phthalocyanine obtained by the reaction of the derived 4-sulfophthalic acid and derivative (anhydride) phthalic acid in the presence of metal joining. This compound or its salt get by converting the sulfonic group in connection phthalocyanine in chlorosulfonic group, which is then injected into the reaction aminimum substance in the presence of an organic amine.

General formula (IV)

Preferred examples of substituted sulfamoyl group represented by the General formula (IV)are illustrated below. But substituted Altamarena group used in the present invention is not restricted by them. Substituted Altamarena group represented by the General formula (IV), shown in the form of the free acid.

Example Deputy 1

Example Deputy 2

An example of the Deputy 3

Example Deputy 4

Example Deputy 5

Example Deputy 6

Example Deputy 7

Of course, the connection is replaced with the above-mentioned Deputy 1, that is, the compound represented by the following General formula (II)or its salt is most preferable from the viewpoint of balance between the ability to display color and resistance to the surrounding gases.

General formula (II)

(In the General formula (II), M represents an alkaline metal or ammonium ion, l represents a number from 0 to 2, m represents a number from 1 to 3 and n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4), and the provisions, which contain the substituents are provisions 4 or 4').

Of course, even in such a connection used in the present invention, as represented by the General formula (I), in which the number of substituents is from 3 to 4, that is, l+m+n is from 3 to 4, and the position of substitution is limited or 4 or 4', there are a large number of isomers, as shown in the following tables 1 and 2, which differ from each other by the number of each is h sulfonic group (-SO 3M), unsubstituted sulfamoyl group (-SO2NH2and substituted sulfamoyl groups (groups represented by the General formula (IV), each of which is a surrogate, in the presence of which is the substitution of the molecular skeleton phthalocyanine. The connection represented by the General formula (I)or its salt is a mixture of these isomers, and confirmed that even compounds having the same structure, are very different in their properties depending on the number and types of isomers. As one example, such properties can result in a difference in the properties of the aggregation between the coloring materials.

0/tr> 0
Table 1

The number of substituents, the position of the substituents and the kinds of isomers (where l+m+n=4)
Sulfonic groupUnsubstituted Altamarena groupSubstituted Altamarena group
4

Position
4'

Position
4

Position
4'

Position
4

Position
4'

Position
l,m,n=

0,1,3
00103 0
001021
001012
001003
000130
000121
000112
000103
l,m,n=

0,2,2
002020
002011
002002
001120
001111
001102
00220
000211
000202
l,m,n=

0,3,1
003010
003001
002110
002101
001201
001210
000301
000310
l,m,n=

1,1,2
101020
101011
1010 02
100120
100111
100102
011020
011011
011002
010120
010111
010102
l,m,n=1,2,1102010
102001
101110
101101
100210
100201
012010
012001
011110
011101
010210
010201
l,m,n=

2,1,1
201010
201001
200110
200101
111010
11101
110110
110101
021010
021001
020110
020101

Table 2

The number of substituents, the position of the substituents and the kinds of isomers (where l+m+n=3)
Sulfonic groupUnsubstituted Altamarena groupSubstituted Altamarena group
4

Position
4'

Position
4

Position
4'

Position
4

Position
4'

Position
l,m,n= 0,1,200102 0
001011
001002
000120
000111
000102
l,m,n= 0,2,1002010
002001
001110
001101
000210
000201
l,m,n= 1,1,1101010
101001
1 00110
100101
011010
011001
010110
010101

Generally speaking, the coloring material based on phthalocyanine has the properties of a stronger aggregation than coloring materials having other structures (for example, coloring materials on the basis of triphenylmethane, azo-compounds, or on the basis of Xanten). Improving the properties of aggregation increases the resistance. By the way, the coloring material having the properties of strong aggregation, display the properties of the strong aggregation and ink. Therefore, when an image is printed on the media printed information using such coloring materials, the tendency for the phenomena bronze shimmer has a noticeable effect on image quality.

In contrast, when the coloring material has properties there is military weak aggregation, properties resistance coloring material (especially resistance to surrounding gases) deteriorate. Therefore, the printed product obtained by using the ink containing such a coloring material may be unsuitable for achieving the stability of the image when storing the same level as that of the yellow ink, which have excellent resistance to surrounding gases.

Accordingly, when the compound represented by the General formula (I)or its salt is used as a coloring material, the properties of the aggregation of coloring material should be adjusted so that it was possible to suppress the occurrence of the bronze phenomenon of low tide and it was possible to obtain the desired resistance to the surrounding gases.

In recent years, in order to obtain high-quality image comparable to a photograph obtained by using a silver halide, the image formation is often conducted using a combination of inks having the same hue and different concentration of coloring material. In other words, the ink having a relatively high content of coloring material (the so-called bright colored ink), the ink having a relatively low content of coloring material (the so-called pale colored ink), used in combination. PR is the use of bright color ink and pale color ink in combination can form an image with reduced graininess plot pale color and excellent gradation of tones. However, a study conducted by the authors of the present invention revealed that the image formed through the use of pale color ink can yield images that are generated through the use of brightly colored ink, resistance to surrounding gases

In particular, it is expected that in the ink containing coloring material based on phthalocyanine, you will be able to solve the problem related to poor durability, by enhancing properties of aggregation of coloring material. However, we discovered that the phenomenon bronze tint occurs even in the pale ink, with the content of the coloring material in the range of 0.5 wt.% ≤ the content <3.0 wt.% with respect to the total mass of the ink when the amplification properties of the aggregation of coloring material.

Based on the above, the authors of the present invention has focused on the aggregation properties of compounds represented by the General formula (I)or its salt and conducted extensive research. In the result, the inventors have found a way, in the exercise of which the kinds of the substituents of the compounds represented by the General formula (I)or salts thereof as a coloring material of the ink with the content (wt.%) coloring material in the range of 0.5 wt.% ≤ the content < 3.0 wt.% p is relative to the total weight of the ink, change to control the properties of the aggregation of coloring material, and 2-pyrrolidone, which is a water-soluble organic solvent, in particular, is effective in suppressing the occurrence of the bronze phenomenon of the tide in the compound represented by the General formula (I), or salts thereof, used in combination with the above-mentioned connection for superior ability to display color, suppress the occurrence of the bronze phenomenon of low tide and high resistance to surrounding gases. So the authors of this invention and implemented the creation process of the present invention.

Measurement properties of the aggregation of coloring material

To measure the properties of the aggregation of coloring material used in the present invention, use of the method of small angle x-ray scattering. As described, for example, in such sources as "Saishin Colloid Kagaki" ("Latest Colloidal Chemistry" - "the Latest colloid chemistry") (Kodasha Scientific, Fumio Kitahara and Kunio Furusawa) and "Hyomen Jotai and Colloid Jotai" ("Surface State and Colloid State" - the State of the surface and the condition of colloid") (Tokyo Kagaki Dozin Co., Ltd., Masayuki Nakagaki), the method of small-angle x-ray scattering characterizes the approach that is usually used to calculate the distance between colloidal particles in a colloidal solution.

Now with reference to figure 1, where is illustrated the principles of the measurement method of small-angle x-ray scattering, will be described the scheme of the device for small angle x-ray scattering. The focal spot size of each of the x-rays generated from an x-ray source, is reduced to approximately several millimeters during the passage of x-rays first through the gap from the first to the third, then these x-rays irradiate the solution samples. X-rays that irradiate the solution sample, dispersed particles in the solution samples before x-rays are detected on the plate, perceiving the image. Since the scattered x-rays interfere with each other due to the presence between them of the difference in optical path, the value of the distance d between the particles can be determined on the basis of the equation Bragg (the following equation (1))using the resulting value θ. When the particles are located at equal distances from each other, the value of d, the definition of which is in question, consider the distance from the center of the particle to the center of the neighboring particles.

d = λ/2sinθ (1)

(In the expression (1) λ represents the wavelength of the x-ray beam, d is the distance between particles, and θ is the scattering angle.)

Generally speaking, the peaks in the profile of scattering angles do not occur when the particles in solution are nareg is regular. In the case of an aqueous solution of colloidal material (coloring material based on phthalocyanine used in the present invention, it is found stable peak having the maximum value in the range of 2θ from 0 to 5°and particles (molecular aggregates)formed due to aggregation of the molecules of the coloring material based on phthalocyanine, settle down with some regularity. Figure 2 shows the profile of the scattering angles in an aqueous solution containing 10 wt.%, each of the coloring material on the basis of triphenylmethane, having a structure represented by compound (1) below, and coloring material based on phthalocyanine, having a structure represented by the General formula (I). Figure 2 shows that the coloring materials based on phthalocyanine, in particular, are the peaks of the scattering angles, even when they have the same blue hue. In other words, in an aqueous solution of coloring material based on phthalocyanine is the aggregation of several molecules of the phthalocyanine. In addition, the distances between the molecular units have a continuous distribution, which presents a profile of scattering angles.

Connection (1)

Figure 3 presents a schematic representation of the dispersion of the distance between the molecular which aggregates the coloring material based on phthalocyanine. As shown in figure 3, the radius of a molecular aggregate is denoted by r1, and the distance between some of the molecular units is denoted by d1. Assuming that the value of d1 is always constant, when the structure of the coloring material on the basis of phthalocyanine remains unchanged, the value of d, as measured by the method of small-angle x-ray scattering, consider increasing from d2 to d3 by increasing the radius of the molecular aggregate formed by the coloring material based on phthalocyanine, from r1 to r2. Accordingly, the value of d, as measured by the method of small-angle x-ray scattering is considered an indication of the size of the molecular aggregate of the coloring material based on phthalocyanine, and the size of the molecular aggregate formed from the molecules of the coloring material, consider increasing with increasing d values.

The study of the relationship between the value d in the ink containing coloring material based on phthalocyanine, and the phenomenon of bronze sheen has revealed that in the case of coloring materials based on phthalocyanine represented by the same structural formula, the phenomenon bronze tint will likely occur at a higher value of d. Given the fact that the bronze phenomenon reflux occurs due to aggregation of the dye molecules of the material, n is the carrier of printed information, installed between the above value of d and the size of the molecular aggregate there is a correlation.

The shape of the peak in the profile of scattering angles indicates the distribution of distances between units, i.e. the distribution of the dispersion of the distances between molecular aggregates. Considering the above fact, namely, that the dispersion distance is an indication of the size of molecular aggregates, believe that this profile of scattering angles specifies the size distribution of molecular aggregates in solution. In other words, assuming that the area of the peaks of the profile of the scattering angles shows the sizes of all molecular aggregates in solution, the phenomenon of bronze shimmer is more likely to occur when a larger value of d, that is, when a greater frequency of large molecular aggregates. Therefore, it is expected that reducing the frequency of large molecular aggregates, which tend to cause the phenomenon bronze tint, will be able to suppress the occurrence of the phenomenon of bronze shimmer. However, in the case of the ink containing only a significantly small molecular aggregates, the resistance of the ink to the surrounding gases is reduced, although the occurrence of the bronze phenomenon tide becomes less likely. Accordingly, the size of molecular aggregates (absolute value d) should properly regulate, in order to suppress the occurrence of the bronze phenomenon of the tide and to achieve resistance to the surrounding gases.

Generally speaking, when the size of the molecules of the coloring material have a certain frequency distribution, the threshold of visual perception, which is the limit of observability for people is, say, 25% of the total number. In view of the above, the value of d when the number of large molecular aggregates, causing the phenomenon of bronze shimmer, amounts to 25% or less of all units, i.e. at the moment when the number of small molecular aggregates, which are unlikely to cause the phenomenon of bronze shimmer, reaches 75% or more of all units, defined as the value of d75and this value of d75is adjusted to fall within a specific range, and you can't get the ink that suppress the occurrence of the bronze phenomenon of the tide and have a high resistance to the surrounding gases.

In practice, in accordance with the study of correlation between each of the values of dpeakcalculated peak values of 2θ profile of scattering angles, and the above values of d75and the level of the phenomenon bronze shimmer found that the value of d75, which takes into account the coefficient of the size distribution is all molecular aggregates, has a stronger correlation with the phenomenon of bronze shimmer than the value of dpeak. The base line for determining the values of 2θ carried out in a range of 0.5° to 5°.

Given the above, the authors of the present invention conducted the following experiment using the compounds obtained by changing the number, types and positions of substitution of substituents in the compound represented by the General formula (I), or salts thereof, which is or which is a coloring material based on phthalocyanine, i.e. it belongs to the coloring materials with adjustable properties of aggregation. To prepare the ink containing the aforementioned coloring materials, and measured profiles of scattering angles, to calculate the values of d75. Then evaluated coloring materials on the basis of their respective values of d75. The result confirms that, when the ink had a value of d75in the range 6,70 nm ≤ d75≤ or 10.60 nm, the ink was effectively inhibited the occurrence of the bronze phenomenon of the tide and had a high resistance to surrounding gases; in addition, it is confirmed that when the ink had a value of d75in the range 6,70 nm ≤ d75≤ 9,10 nm, these inks, in particular, effectively inhibited the occurrence of the bronze phenomenon of tide and had vysokostoimostnyh to the surrounding gases. Namely, in the case when the properties of the aggregation of the compounds represented by the General formula (I)or salts thereof as a coloring material adjust so that the value of d75is within the above range, it is found that these ink suppress the occurrence of the bronze tint and have a high resistance to the surrounding gases.

To measure the value of d way small-angle x-ray scattering, molecular density in the solution should be maintained constant. Therefore, the d value is preferably measured using ink, the concentration of the coloring material which is maintained constant. In the present invention the profile of the scattering angles were measured using the ink prepared so that the content (wt.%) coloring material should be 0.5 wt.% with respect to the total mass of the ink. When the ink had a content of the coloring material exceeds 0.5 wt.%, the ink was diluted with pure water up until the concentration of the coloring material does not reach 0.5 wt.%, and he measured the profile of the scattering angles of the diluted ink. That the ink content of coloring material constituting 0.5 wt.%, you can verify on the basis of the fact that absorbing capacity, ismaren what I'm after diluting the ink with clean water 150 times, is in the range from 1.15 to 1.30. The conditions in which measured absorptive capacity are as follows.

Spectrophotometer: a recording spectrophotometer (trade mark U-3300, manufactured by Hitachi, Ltd.).

Measuring cell: quartz cuvette, 1 cm

Step wavelength: 0.1 nm.

Scan rate: 30 nm/min

Number of measurements: measurement was performed five times, receiving a mean value of five measurements.

The aggregation properties of the above-described coloring material have a correlation with wavelength (λmax) maximum absorption in the absorption spectrum. Ink having properties more strong aggregation (the larger the value of d75), tend to have lower value λMax. Consequently, the coloring material can be evaluated for its properties of aggregation by value λmax having a correlation with a value of d75. In this case it is detected that the ink is effectively suppress the occurrence of the bronze phenomenon of the tide and have a high resistance to surrounding gases, when λmax ink, diluted with clean water 2000 times, is in the range 608,0 nm ≤ λmax ≤ 613,0 nm. Also found that the ink, in particular, to effectively suppress the occurrence of the bronze phenomenon of the tide and have a high resistance to surrounding gases, when the λ max is in the range 610,0 nm ≤ λmax ≤ 613,0 nm. In other words, in the case when the properties of the aggregation of the compounds represented by the General formula (I)or salts thereof as a coloring material adjust so that the value of the λmax ink containing the coloring material falls within the above range, discovered that these ink suppress the occurrence of the bronze phenomenon of the tide and have a high resistance to the surrounding gases. The conditions in which measure the wavelength of maximum absorption are the same as the above-described conditions under which the measure absorptive capacity.

It is known that the coloring material used in the present invention, the aggregation becomes less likely when it has fewer unsubstituted sulfamoyl groups or sulfonic groups. In particular, in the case where the coloring material meets the requirement regarding the values of d75in the present invention, the coloring material preferably contains a compound in which the number of substituents l≥1 in the compound represented by the General formula (I)or its salt or the compound represented by the General formula (II)or its salt, because it is possible to suppress the aggregation of the coloring material.

Method t is the investing of coloring material

Possible compound 1 (compound represented by the General formula (II)or its salt), which is an example of a coloring material used in the present invention, can be tested in the following ways (1)to(3), each of which involves the use of high performance liquid chromatography (HPLC):

(1) determination of the retention time for the peak;

(2) determination of wavelength of maximum absorption at the peak according to (1);

(3) determination of the relationship of the mass/charge, M/Z (position.), at the peak according to (1).

Analysis conditions for HPLC are listed below. The solution of the ink diluted 1000 times with clean water, analyzed by high-performance liquid chromatography in the following conditions, the retention time for measuring the duration of the peak and the wavelength of maximum absorption at the peak.

Column: Symmetry C18, 2.1 mm × 150 mm

Flow rate: 0.2 ml/min

Photodiode matrix (FDM): from 210 nm to 700 nm

Mobile phase and gradient: table 3

Table 3
0-15 min15-30 min
A. Water87,5% → 0%0%
C. Acetonitrile10% → 97,5%97,5%
C. Water is the first solution of ammonium acetate with a concentration of 200 mmol/l 2,5%2,5%

In addition, the following conditions analysis of the spectrum of masses. The mass spectrum obtained for the peak measured in the following conditions, and measure M/Z (position.).

The method of ionization

Ionization methodelektrorazpredelenie (IMAR)
The capillary voltage3,1 kV
Desalvatore gas300°
The temperature of the ion source120°

Detector

for positive values: 40, 500-1000 of atomic mass units (Amu)/0.9 sec

Table 4 shows the duration, wavelength of maximum absorption and M/Z (position.) for compound 1. When the coloring material has the values listed in table 4, this coloring material can be defined as suitable for use in the present invention. In the coloring material used in the present invention, the amplitude ratio mass spectrum obtained from the peak of high performance liquid chromatography (HPLC), varies depending on the ratio of components of a mixture of isomers that differ from each other in the number, types and positions for which edenia substituents in the coloring material, but the peak ratio M/Z, described in the following table 4, characterized by the fact that he will always find. Therefore, this method of testing coloring material is effective in determining whether the ink coloring material used in the present invention.

Table 4
Duration (min)The wavelength of maximum absorption (nm)M/Z (Position.)
6,9-7,2600-6201670-1672

Water environment

In the ink composition according to the present invention may use water or water environment, which is mixed with each other solvent-water and any of various water-soluble organic solvents.

Specific restrictions on water-soluble organic solvents do not overlap, because the main aspect is their solubility in water, and their preferred examples include Elgiloy alcohol having 1-4 carbon atoms, such as ethyl alcohol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, 2-butyl alcohol, 3-butyl alcohol; carboxylic acid amide, such as N,N-dimethylformamide or N,N-dimethylacetamide; ketone or cytosport, such as acetone, METI ethylketone or 2-methyl-hydroxypentanal-4-one; simple cyclic ether, such as tetrahydrofuran or dioxane; polyhydric alcohol such as glycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2 - or 1,3-propylene glycol, 1,2 - or 1,4-butyleneglycol, polyethylene glycol, 1,3-butanediol, 1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, dithioglycolic, 2-methyl-1,3-propandiol, 1,2,6-hexanetriol, derived acetylenics, or trimethylolpropane; simple alkilany ether of a polyhydric alcohol, such as simple onomatology (or-ethyl) ether of ethylene glycol, simple onomatology (or ethyl) ether of diethylene glycol or a simple monotropy (or butyl) ether of triethylene glycol; a heterocyclic compound such as 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-1-2-imidazolidinone or N-methylmorpholine; sulfur-containing compound such as dimethyl sulfoxide; and urea and a derivative of urea. Each of these water-soluble organic solvents can be used singly or in combination.

The content of such water-soluble organic solvent is preferably from 5 wt.% up to 90 wt.% or - what is more preferably from 10 wt.% up to 50 wt.% with respect to the total mass of the ink. The above-mentioned ranges is caused by the following reason. If the content is less than the above range may decrease the reliability is in the context of the properties of projection, etc., when using water-soluble organic solvent for inks for ink-jet printing, and, on the other hand, if the content is larger than the above range, the ink may be unsatisfactory because of the increased viscosity of the ink.

As water is preferable to use deionized water (ion exchange water). The water content is preferably from 10 wt.% up to 90 wt.% with respect to the total mass of the ink.

In the present invention among the above water-soluble organic solvent is preferred 2-pyrrolidone, in particular because it is effective for suppressing the occurrence of the effect bronze shimmer when used in combination with the compound represented by the General formula (I)or its salt. Content (wt.%) 2-pyrrolidone in the ink is preferably 50.0% or more with respect to content (wt.%) coloring material to get the same effect by introducing 2-pyrrolidone in the ink.

Examples of water-soluble organic solvent having the same effect as 2-pyrrolidone, include polyethylene glycol (having a molecular weight of 200 or more) and a simple alkilany ether of a polyhydric alcohol, such as a simple monotropy ether of ethylene glycol.

The mechanism of suppression of occurrence of I is of bronze shimmer to these specific water-soluble organic solvents unclear and judging by the ratings, is as follows. The value of d75ink obtained by the method of small-angle x-ray scattering, does not change depending on the presence or absence of these specific water-soluble organic solvents in the ink. Therefore, these specific water-soluble organic solvents do not change the properties of the aggregation of coloring material in the ink and is able to suppress the aggregation of the coloring material printed on the media information. Content (wt.%) these specific water-soluble organic solvents in the ink is preferably 50.0, wt.% or more with respect to content (wt.%) coloring material to be able to manifest the effect arising from the introduction of these specific water-soluble organic solvents in the ink.

Other additives

In addition, in the present invention may require the introduction of various additives such as a surfactant, a pH regulator, a corrosion inhibitor, an antiseptic, antifungal agent, helatoobrazovatel, ultraviolet light absorber, a viscosity modifier, defoamer, and water-soluble polymer.

Specific examples of surfactants include anionic surfactant, ampholytic Evernote-active substance, cationogenic surfactant and nonionic surfactant.

Specific examples of anionic surfactants include alkylcarboxylic, α-reincorporate, polyoxyethylenesorbitan; N-acylaminoacyl or its salt; N-allmilitarynews salt; alkylchlorosilanes; alkylchlorosilanes; rosin soap; castor oil sulfonate; sulfonate lauric alcohol; ALKYLPHENOLS; alkylphosphate; alkylarylsulfonate; diethylsulfoxide; diethylhexylphthalate and dioctylsulfosuccinate.

Specific examples cationogenic surfactants include derivative 2-vinylpyridine) - derivatives and derivative poly-vinylpyridine) - derivatives. Examples of ampholytic surfactants include betaine lauryldimethylamine acid, betaine, 2-alkyl-N-carboxymethyl-N-hydroxymethylimidazole, amidopirin fatty acids of coconut oil/propyltrimethylammonium acid, polyacrylonitrile and other imidazoline derivatives.

Specific examples of nonionic surfactants include ethers, such as simple nonylphenoxy ether of polyoxyethylene, simple octylphenoxy ether of polyoxyethylene, simple dodecyl who enjoy ether of polyoxyethylene, simple lauric ester of polyoxyethylene, simple alerby ether of polyoxyethylene, simple alkilany ether of polyoxyethylene and simple alkilany ether polyoxyalkylene; esters, such as polyoxyethyleneglycol acid, polyoxyethylene, polyoxyethylenated, corbicular, servicemonitor, servicemanual, servicesecurity, polyoxyethylenated and polyoxyethylenated; and nonionic surfactants based on poly (ethylene glycol), such as 2,4,7,9-tetramethyl-5-Decin-4,7-diol, 3,6-dimethyl-4-octyn-3,6-diol and 3,5-dimethyl-1-hexyne-3-ol (for example, Acetylenol EH is made by the company Kawaken Fine Chemicals Co., Ltd., and Surfynol 104, 82 and 465, and Olfin STG, all of which are manufactured by Nissan Chemical Industry Co., Ltd.).

As the pH regulator can be used any substance to the extent that this substance is capable of regulating the pH of the ink so that this parameter was in the range from 6.0 to 11.0. Examples of such substances include aminopyrene compounds such as diethanolamine, triethanolamine, isopropanolamine and trihydroxypyrimidine; hydroxides of alkali metals such as lithium hydroxide and potassium hydroxide; ammonium hydroxide; and carbonates of alkali metals such as lithium carbonate, sodium carbonate and potassium carbonate. Of them, preferred are sertaline compounds such is AK diethanolamin, triacetonamine, isopropanolamine and trihydroxypyrimidine, and carbonates of alkali metals such as lithium carbonate, sodium carbonate and potassium carbonate, because each of these substances has the effect of suppressing the occurrence of the bronze phenomenon of the tide.

Specific examples of the antiseptic and antifungal agents include compounds based on organic sulfur, organic nitrogen - and sulfur-based, organic halogen-containing, on the basis of galericulata, based iodopropargyl, on the basis of representing N-haloalkylthio connection, on the basis of benzothiazole based on netheril, based on a pyridine-based 8-oksihinolina, on the basis of benzothiazole based on isothiazole, on the basis of a dithiol-based oxide pyridine, based on nitropropane, based on ORGANOTIN, on the basis of phenol, based on the Quaternary ammonium salt, the basis of the triazine-based thiadiazine, based on anilide, based on adamantane, based on dithiocarbamate, on the basis of bromoindene, based benzylbromide and on the basis of inorganic salts.

Examples of compounds related to the type of organic galogensoderjasimi include pentachlorophenolate. Examples of connection-based pyridinoline include sodium 2-pyridinethiol-oxid. Examples of compounds n the basis related to the type containing inorganic salt include sodium acetate anhydrous sodium. Examples of compounds based on isothiazoline include 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-methyl-5-isothiazolin-3-one magnesium chloride and 5-chloro-2-methyl-5-isothiazolin-3-one calcium chloride. Other specific examples of the antiseptic and antifungal agent include sodium sorbate and Bezout sodium, in particular, include Proxel GXL(S) and Proxel XL-2(S)produced by the company Avecia Inc.

Examples of the chelating agent include sodium citrate, sodium ethylenediaminetetraacetate, dinarolacerta sodium, hydroxyethylenediaminetriacetate sodium, diethylenetriaminepentaacetate sodium and aramellatasat sodium.

Examples of the corrosion inhibitor include acidic sulfite, sodium thiosulfate, ammonium salt of thioglycolic, nitrite of Diisopropylamine, TETRANITRATE pentaerythritol and nitrite of dicyclohexylamine.

Examples of suitable ultraviolet light absorber include a connection based on benzophenone, connection-based benzotriazole, the connection on the basis of cinnamic acid, a compound based on triazine, a compound based on stilbene or compounds that absorb ultraviolet light, affecting the fluorescence, a typical representative of which is the connection-based benzooxazole, the so - called fluorescent brighteners.

Examples of the viscosity modifier include compounds based on water-soluble polymers in addition to the water-soluble organic solvents, and examples of compounds based on water-soluble polymers include polyvinyl alcohol, a derivative of cellulose, polyamine and polyimid.

As antifoam you can use the connection relating to the type of fluorine-containing or silicon.

The media printed information

For forming images using the ink according to the present invention can use any media, printed information, since printing is carried out by applying ink to the media printed information.

The present invention is applicable to the medium of printed information, in which a coloring material such as pigment, is absorbed by the fine particles forming the porous structure in an ink absorbing layer, and the image is formed, at least, of such small particles with absorbed their coloring material, and the present invention is suitable particularly for the case when the applied method of creating a jet of ink. Such media printed information inkjet preferably is a carrier of the so-called Pogos the existing type, in which the ink is absorbed by the gap formed in the ink absorbing layer on the canvas.

Absorbing the ink absorbing layer of the type made in the form of a porous layer composed mainly of fine particles containing a binder and other additives, if required. Specific examples of fine particles include inorganic pigments such as silica, clay, talc, calcium carbonate, kaolin, aluminum oxide (for example, alumina or aluminum hydroxide, diatomaceous earth, titanium oxide, hydrotalcite and zinc oxide; and organic pigments such as urea-formalin polymer, a polymer based on ethylene and the polymer based on styrene. You can use one or more types of such particles. Examples of binders which are suitable for use include water-soluble polymer and latex. For example, you can specify the following substances: polyvinyl alcohol or denatured product; starch or its modified product, gelatin or modified products; gum Arabic; cellulose derivatives such as carboxymethylcellulose, hydroxymethylcellulose and hypromellose; latexes based on copolymers of vinyl type, such as latex-based elastomeric copolymer of butadiene and styrene (SBR), latex-based elastomeric copolymer of butadiene and nitri is a (NBR), latex-based copolymer of methyl methacrylate and butadiene, latex-based polymer with a functionally-modified group, and a copolymer of ethylene and vinyl acetate; polyvinylpyrrolidone, maleic anhydride or a copolymer; and a copolymer of acrylic ester. If necessary, you can use two or more types of such binders. In addition, you can use the additive, and examples of such additives that can be used if necessary, include a dispersant, a thickener, a pH regulator, lubricant, denaturation fluidity, surfactant, defoamer, parting agent, a fluorescent dye, an ultraviolet light absorber and an antioxidant.

In particular, in the present invention preferably uses the medium of printed information, having formed therein an absorbent ink layer consisting mainly of fine particles having an average particle size of 1 μm or less. Specifically, preferred examples of fine particles include fine silica particles and fine particles of aluminum oxide. Preferred fine silica particles are fine particles of silica, a typical representative of which is colloidal silica. Colloidal silica, which is available on the market, in particular, is such as described in document JP 2803134 B Il the document JP 2881847 B. Preferred fine particles of aluminum oxide are fine particles of aluminum hydroxide and the like, aluminum Hydroxide represented by the following General formula, can be cited as one example of such fine particles of aluminum hydroxide.

AlO3-n(OH)2n·mH2O.

(In this formula, n is an integer equal to 1, 2 or 3, and m is a value from 0 to 10, or in a preferred embodiment, from 0 to 5, provided that m and n cannot be 0 at the same time. The number m may be an integer or non-integer, because the member mH2O also represents the aqueous phase, which can realize desorption and not involved in the formation of the crystal lattice with mH2O in many cases. In addition, the heated material of this type can cause reaches the value m 0).

The aluminum hydroxide can be obtained by a well known method, such as hydrolysis of aluminum alkoxide or sodium aluminate as described in document US 4242271 or document US 4202870, or a method comprising adding an aqueous solution of sodium sulfate, aluminum chloride, etc. in an aqueous solution of sodium aluminate, etc. for the implementation of neutralization, as described in the document JP57-44605 B.

The media printed information preferably has a basis to support the above fetivals is th ink layer. You can use any basis without any specific limitations, as its ink absorbing layer can be formed from the above-described porous fine particles, and this framework provides rigidity, so that this basis can be transported via the transport mechanism of the inkjet printer and the like, Specific examples of bases include base paper formed from raw material type-fibrous mass consisting mainly of fibers of natural cellulose; plastic base, consisting of such a material as complex polyester (e.g. polyethylene terephthalate), cellulose triacetate, polycarbonate, polyvinyl chloride, polypropylene or polyimide; a paper with a resin coated (for example, RC paper), having on one side of the paper base layer polyolefin resin coating with the addition of white pigment, etc.

Method of inkjet printing

Ink corresponding to the present invention, it is convenient to use, in particular, for a method of inkjet printing, providing for the ejection of ink by way of creating a jet of ink. Examples of the method of inkjet printing include printing method involving the application of mechanical energy to the ink to eject the ink, and a printing method, providing for the application of thermal energy to the ink to vibras is of ink. In particular, a printing method, involving the use of heat, is preferred for use in the present invention.

The ink cartridge

An example of the ink cartridge, suitable for printing by the ink of the present invention includes an ink cartridge comprising storing the ink portion for storing ink.

The printing unit

An example of the printing unit, suitable for printing by the ink of the present invention includes a printing unit, comprising storing the ink portion for storing ink and the printhead. In particular, we can cite the example of a printing unit in which the print head applies heat energy corresponding to the signal printing, ink for formation of ink droplets through the mentioned energy.

Printer inkjet

An example of a printing device suitable for carrying out printing using the ink of the present invention includes a printing device in which thermal energy corresponding to the print signal applied to the ink in the chamber of the printhead, having a storing ink portion for storing ink, with the purpose of the forms is the formation of ink droplets through this energy.

Below will be described conventional structure of the mechanical part of the device for inkjet printing. The housing of the printing device comprises a feeding sheets part transporting sheets part, Dobby parts, producing leaves part and the cleaning part and the outer covering part to protect these parts and provide each of their mechanisms able to perform its intended role. Below will be described the basic concepts of each of these parts.

4 shows a perspective image of the printing device. Figure 5 and 6 shows images illustrating the internal mechanism of the housing of the printing device, respectively. Figure 5 presents a perspective image, obtained when viewed from above and to the right, and figure 6 presents a cross-section of the housing of the printing device on the side view.

When the supply of sheets in a printing device in a shameful part, consisting of a sheet feed roller M and separating roller M in the input sheet parts, including a tray M sheet feeder, stack a predetermined number of sheets of printed media information. Laid thus the printed media are separated in shameful parts, and is transported by only the top sheet of paper printed information. The media printed information, last the config in transporting the sheet portion, goes holder M3000 roller and the folding guides focus M paper and sent to a pair of rollers consisting of a transporting roller M and roller M. A pair of rollers consisting of a transporting roller M and roller M, rotates under the action leading to the movement of the front left motor E, and this rotation causes the transportation of the carrier printed information on buyhoodia roller M.

In Dobby parts, when printed on the media information of image formation, the print head N (Fig.7) is located in the target position of image formation, and the ink are ejected onto the medium in accordance with a signal from an electric substrate E. Details of the composition of the printhead N will be described below. When the printhead N001 prints, in an alternating repeat the main scanning of the printing in which the print carriage M scans in the direction of column, and the sub-scanning in which the media is transported in the direction of a line conveying roller M, resulting in the storage medium is formed image.

And, finally, the media on which the formed image, it appears in the gap between the first conducting sheets in the face M and spur 3120 in the position of the release sheet, is transported and discharged to the tray M for release sheets.

In the cleaning part, when the pump M gets the opportunity to work in a state where the cover M is put into intimate contact with the hole for the ejection of ink printhead N to clean the printhead N before printing images and after it, there is a suction unnecessary ink and the like from the printhead N. The ink remaining in the cap M, imbibed with the cover open, as a result there was no adhesion of the remaining ink, no further detrimental effect.

The composition of the print head

Now will be described the structure of the cartridge N printhead. Cartridge N printhead includes a printhead N, tools for installation of tanks In ink and means for feeding ink from tanks In ink in the printhead, and is installed on the carriage M so that it can connect to it and disconnect from it.

7 shows how the capacity N ink is installed on the carriage N. Printing device forms the image by yellow, bright red, blue, black, pale red, pale blue, and green ink, so that the capacity In ink independently prepared for seven colors. Ink in accordance with the present invention uses the tsya as, at least one of the above-mentioned ink. In addition, as shown in the drawing, each tank with ink installed with the possibility of detaching the cartridge In head. Capacity N ink can be removed in a state where the cartridge N printhead mounted on the carriage M.

On Fig presents a perspective image with a spatial separation of the parts of the cartridge In head. The drawing shows that the cartridge N head includes a first substrate N printed circuit elements, the second substrate N printed circuit elements, the first plate N, the second plate N, the substrate S with electrical wiring, the holder N tanks, element In forming flow channels, the filter N and rubber seal N.

Each of the first substrate N printed elements and the second substrate N printed items is a silicon substrate, having a lot of printing elements (nozzles)for ejection of ink formed on one surface by photolithography. Wiring made of aluminum and the like, for supplying power to each printing element formed by the method of forming a film, and numerous flow channels of the ink corresponding to the individual printing elements are also formed by means of photo is ecografia. In addition, the ink supply channels intended for supplying ink in numerous ink flow channels formed in such a way that they open on the rear surface.

Figure 9 is presented in an enlarged scale a front view intended to explain the composition of each of the first substrate N printed elements and the second substrate N printed items. Position N - N denote the sequence of printing elements (which in the following text can be cited as well as sequences nozzles)corresponding to different colors of ink. The first substrate N printed elements has a sequence of nozzles for three colors: sequence N nozzles, which serves a yellow ink; the sequence N nozzles, which are served in bright red ink; and the sequence N nozzles, which serves a blue ink. The second substrate N printed elements has a sequence of nozzles for four colors: sequence N nozzles, which serves pale blue ink; the sequence N nozzles, which served black ink; the sequence N nozzles, which serves orange ink, and the sequence N nozzles, which serves pale red ink.

Each sequence of nozzles consists of 768 mi nozzles arranged at intervals of 1200 dpi (dots per inch, the reference value) in the conveying direction of the carrier printed information, and each nozzle ejects 2 picolitre (PL) of ink. The orifice in each release hole nozzle set equal to about 100 μm2. The first substrate N printed elements and the second substrate In printed circuit elements are connected and bonded to the first plate N, having completed her holes N for supplying ink to the first substrate In printed elements and the second substrate In printed elements.

The second plate N, has holes, is also connected and bonded with the first wafer N. The second plate N supports the substrate N with electrical wiring so that the substrate S with electrical wiring, the first substrate N printed elements and the second substrate In printed circuit elements are electrically connected.

The substrate N with electrical wiring supply an electrical signal that causes each of the nozzles formed on the first substrate In printed elements and the second substrate N printed items, throw away the ink. The substrate N with wiring has a wiring connected to each of the first substrate N printed elements and the second substrate In printed elements, and the input terminal N for external signal is a, which is located in the end portion of the wiring to receive an electrical signal from the body of the printing device. Input terminal N for external signal installed on the rear surface of the holder In containers and sealed with said party.

By the way, the item In forming flow channels, bonded, for example by ultrasonic welding with holder N tanks to support tanks N with ink. As a result, there is formed a flow channel N passing from tanks N ink to the first plate N.

Filter N is located in the end portion of the flow channel N ink, connected with containers N with ink, so that the filter N prevents dust from outside. On the part where a flow channel N communicates with the tanks In ink, a rubber seal N to prevent evaporation of ink from the mentioned parts.

In addition, as described above, the cartridge N head formed by joining by welding or similar method of connection - part holder receptacles formed by the holder In tanks, element In forming flow channels, the filter N and rubber seal N, and part N printhead formed by the first substrate N printed circuit elements, the second podloga N printed items, the first plate N, the substrate S with electrical wiring and the second plate N.

Incidentally, in the above description as variant example of implementation of the printhead shown printhead corresponding to the system Bubble Jet (trademark), which performs printing by electrothermal Converter (printing element) for generating thermal energy, which causes the effect film boiling of ink depending on the electric signal.

Typical structure and principle of operation preferably based on the basic principle described in U.S. patent No. 4723129 and 4740796. This principle applies to work through filing requirements and continuous feed. It is effective, in particular with respect to the supply to meet demand, and it happens for the following reason. At least one excitation signal, which corresponds to the printed information and causes a sudden rise of temperature above the temperature of the nucleate boiling, served in the electrothermal transducers, installed in accordance with the trajectory of the sheet and the liquid and holding on this trajectory, the liquid (ink), thereby causing the generation of thermal energy of the electrothermal transducer. Then on the surface of the heat film boiling occurs. As a result, the OBR is irreducible bubble in the liquid (ink) can occur in-one correspondence with the signal. The growth and contraction of bubbles leads to the ejection of the liquid (ink) through the hole to eject the consequence of which is formed of at least one drop. More preferred is a pulse excitation signal, because it is able to immediately and adequately to cause the growth and contraction of a bubble of air to achieve the ejection of the liquid (ink) with maintaining excellent responsiveness.

As an example of the second variant implementation of the printing device for inkjet printing, which uses mechanical energy, you can specify the print head for ink-jet printing supply needs, including: soleobrazutaya substrate having multiple nozzles; creating pressure means located opposite the nozzle and consisting of a piezoelectric material and conductive material; and an ink filling the space surrounding creates pressure means, thus creating a pressure means is moved to the applied voltage, resulting in ejection of ink droplets from the nozzle.

Printer inkjet is not necessarily the same as the above-described device, in which the head and capacity of the ink are separate elements, and may be one in which the head and capacity ink done the us as a whole, so they are inseparable. In addition, the capacity of the ink can be made separate from the head or inseparable component integral with the head installed on the carriage, or may be installed in the fixed part of the device for supplying ink to the printhead through such ink feed item, as a tube. When the capacity of the ink has a structure intended for preferred application of negative pressure to the printhead, which stores ink part can be located absorbing means, or the capacity of the ink can have a flexible container with ink and a spring portion for the application of driving force to expand the internal volume of the container. In the printing device may be taken above the serial printing method, or it may be in the form of a device for line-by-line printing obtained by alignment of the printing elements in the range corresponding to the full width of the carrier printed information.

Examples

Below is a more detailed description of the present invention by way of examples and comparative examples. However, the following examples are included in this description is only for purposes of illustration, to the extent that the following examples do not go beyond RA is CI beings of the present invention. Unless otherwise indicated, the term "part" in relation to each component of the ink in the examples and comparative examples represents "mass part".

Synthesis of coloring material

(1) Synthesis tetrahydrocannabivarin copper (compound (2))

Connection (2)

Sulfolan, mononitro-4-sulfophthalic, ammonium chloride, urea, ammonium molybdate and bivalent copper chloride were mixed, stirred and washed with methanol. After that, the obtained product was added to water and used an aqueous solution of sodium hydroxide to control the pH of the solution to reach the value 11. In the resulting solution was added an aqueous solution of hydrochloric acid while stirring, and then was gradually added sodium chloride until precipitation of crystals. The obtained crystals were filtered and washed with 20%aqueous solution of sodium chloride, after which was added methanol. Selected crystals were filtered, washed with 70%aqueous solution of methanol and dried to obtain tetrahydrocannabivarin copper (compound (2)) in the form of blue crystals.

(2) Synthesis of phthalocyaninatoaluminum copper (compound (3))

Connection (3)

Received the above image of tetranitrophenylnitramine the copper (compound (2)) was added to chlorosulfonation, and then was added dropwise thionyl chloride to the reaction. After that, the reaction solution was cooled, and the precipitated crystals were filtered to obtain a wet pellet of phthalocyaninatoaluminum copper.

(3) Synthesis of the following compounds (4)

The compound (4) is a compound represented by the General formula (IV)in which Y represents an amino group, and each of the radicals R1and R2represents a sulfonic group substituted in position 2 or 5.

Connection (4)

Lipal OH, cyanuric chloride and monetaryunion-2,5-disulfonate was added to ice water and allowed to react with the simultaneous addition of an aqueous sodium hydroxide solution. Then, the reaction solution was added an aqueous solution of sodium hydroxide to adjust the pH of the reaction solution to reach the value of 10. In the reaction solution was added 28%ammonia water for the reaction. In the resulting reaction solution was added sodium chloride and concentrated hydrochloric acid for separation of crystals. Selected crystals were filtered and were fractionally, and washed with 20%aqueous solution of sodium chloride to obtain a wet cake. In the obtained wet cake was added methanol and water, and all this was filtered, washed with methanol and dried, obtaining the connection is s (4).

(4) Synthesis of coloring materials A-G

The wet cake of phthalocyaninatoaluminum copper (compound (3))synthesized in example (2), added to ice water, and stirred to prepare a suspension. To this suspension was added ammonia water and the compound (4)synthesized in example (3), for the reaction. To this mixture was added water and sodium chloride to highlight crystals. The obtained crystals were filtered off, washed with aqueous sodium chloride solution, again filtered and dried to obtain coloring material And in the form of blue crystals. In view of the above-mentioned reaction of this compound was evaluated as a coloring material which is a compound that represents a possible connection 1, in which the average number of substituents in the General formula (I) is: l=1.0 to 1.5; m=1,5-2,0; and n=2.0 to 2.5.

Coloring materials B-G, which were compounds, each of which represents a connection 1, which differ from each other in the average number of substituents in the General formula (I) synthesized during the same procedure of synthesis, such as that described above. The average number of substituents in each of the coloring materials a to G shown in table 5.

Table 5
Coloring materiallmn
A1,0-1,51,5-2,02,0-2,5
In01.5 to 2.51.5 to 2.5
1,0-1,51,0-1,52,0-2,5
D01.5 to 2.51.5 to 2.5
E1,0-1,51,0-1,52,0-2,5
F02,5-3,00,5-1,0
G0-1,01,0-1,52,0-2,5

Evaluation of the resistance to the bronze sheen

(1) Preparation of ink

The respective components shown in the following table 6 were mixed and sufficiently stirred. After that, the obtained product was filtered through a membrane filter having a pore size of 0.2 μm under pressure to prepare each of the inks A-D.

Table 6
Ink
AInD
Coloring material A0,5
Coloring mA is Arial 0,5
Coloring material0,5
Coloring material D0,5
Glycerin20,020,020,020,0
2-pyrrolidone2,52,52,52,5
Acetylene EH (*)1,01,01,01,0
Water purified ion-exchange76,076,076,076,0
(*) Adduct of ethylene oxide and acetylglycine (surfactant; manufactured by the company Kawaken Fine Chemicals Co., Ltd.)

(2) Measurement values of d75

Measured profile of the scattering angles of each of the inks A-D (each of which has a concentration of coloring material of 0.5%) small-angle x-ray scattering. The profile of the scattering angles were measured under the following conditions.

Device: Nano Viewer (manufactured by Rigaku company)

The x-ray source: Cu-Kα

Output parameters: 45 kV 60 mA

Effective focal spot: 0.3 to MMF + capocannoniere Max Flux

1-I slit: 0.5 mm; 2-I slit: 0.4 mm; 3-I slit: 0.8 mm

The exposure time: 240 min

The suppressor beam: 3,0 MMF

Measurement method: method of threading

Detector: plate, perceiving the image in blue

The peak area obtained by removing the background, and a value of 2θ 75% or more of the entire peak area (a value of 2θ75) was measured based on the profile of scattering angles using the software, JADE (from firm Material Data, Inc.) for processing x-ray diffraction data. The value of 2θ75to calculate the value of d75on the basis of the following expression (2). The results are shown in table 7.

d75=λ/2sinθ75(2).

(3) Measurement of the wavelength of maximum absorption (λmax)

After dilution of each of the inks A-D (each of which has a concentration of coloring material 0.5%) 2000 times with pure water was measured wavelength of maximum absorption (λmax). The results are shown in table 7. The wavelength of maximum absorption (λmax) was measured under the following conditions.

Spectrophotometer: a recording spectrophotometer (trade mark U-3300, manufactured by Hitachi, Ltd.).

Measuring cell: quartz cell, 1 cm

Step wavelength of 0.1 nm.

Scan rate: 30 nm/min

Number of measurements: measurement was performed five times, receiving the average value of ATI measurements.

(4) the Creation of a printed product

Each of the inks A-D, prepared as described above, was inserted in the printing device for inkjet printing (brand name : PIXUS 950I, manufactured by company CANON Inc.) to print a picture with a 13-level gradation on glossy inkjet printable media (brand PR-101, manufactured by company CANON Inc.) by changing the fill factor when printing to give it values 5%, 12%, 21%, 29%, 35%, 43%, 51%, 58%, 66%, 74%, 85%, 90% and 100%. Thus was created the printed product.

(5) evaluation of the resistance to the bronze sheen

Conducted visual inspection of utilization when printing in which the phenomenon of bronze shimmer appeared in the picture, with a 13-level gradation representing an established mentioned by way of the printed product to determine the fill factor when printing, in which arose the phenomenon of bronze shimmer. Generally speaking, the phenomenon bronze tint may occur with increasing fill factor when printing. In other words, the probability of the occurrence of the bronze phenomenon of tide increases when the ink have a fill factor when printing, less than one that shouldn't occur the phenomenon bronze tint, and the probability of occurrence of the bronze phenomenon of the tide decreases when the ink have a fill factor of PR is printing, more than that, which should occur the phenomenon of bronze shimmer. Criteria of resistance to the bronze shimmer below. The evaluation results are shown in table 7.

A: fill Factor when printing, in which occurs the phenomenon bronze shimmer is 55% or more.

In: the fill Factor when printing, in which occurs the phenomenon bronze tint, is in the range of 40% ≤ factor use in print ≤ 55%.

From: fill Factor when printing, in which occurs the phenomenon bronze shimmer, less than 40%.

Table 7
InkThe value of d75[nm]The wavelength of maximum absorption, λmax [nm]]Resistance to the bronze sheen
ExampleA7,52612A
In10,59608,1In
of 6.71612,9A
Comparative exampleD10,61607,9

Evaluation of the resistance to the bronze tint and resistance to surrounding gases

(1) Preparation of ink

Corresponding to omponent according to the formulations 1-4, shown in table 8, were mixed and sufficiently stirred. After that, the obtained product was filtered through a membrane filter having a pore size of 0.2 μm under pressure to prepare an ink. The ink prepared using the coloring material And according to the formulations 1-4, signified by the symbols A1-A4, and the ink prepared using the coloring material according to the formulations 1-4, signified by the symbols B1-B4 (also came with other inks). Thus, we prepared a total of 28 kinds of ink A1-G4.

Table 8
Composition 1Part 2Part 3Part 4
Coloring material1,51,51,51,5
Glycerin10,010,010,010,0
Ethylene glycol8,08,08,08,0
2-pyrrolidone2,50,80,7
Diethylene glycol1,71,82,5
Acetylene EH (*)0,8 0,80,80,8
Water purified by ion exchange77,277,277,277,2
(*) Adduct of ethylene oxide and acetylglycine (surfactant; manufactured by the company Kawaken Fine Chemicals Co., Ltd.)

(2) Measurement values of d75

Measured profile of the scattering angles of each of the ink A1 - G4 by way of small-angle x-ray scattering, provided that each of the inks were diluted 3 times with clean water before measurement of the profile of the scattering angles of each of the ink by way of small-angle x-ray scattering. The profile of the scattering angles were measured under the following conditions.

Device: Nano Viewer (manufactured by Rigaku company).

The x-ray source: Cu-Kα.

Output parameters: 45 kV 60 mA.

Effective focal spot: 0.3 to MMF + confocal mirror Max Flux.

1-I slit: 0.5 mm; 2-I slit: 0.4 mm; 3-I gap: 0,8 mm

The exposure time: 40 minutes

The suppressor beam: 3,0 MFF.

Measurement method: method of threading.

Detector: plate, perceiving the image in blue

The peak area obtained by removing the background, and a value of 2θ 75% or more of the entire peak area (a value of 2θ75) was measured based on the profile of scattering angles by ogromnogo ensure JADE (from firm Material Data, Inc.) for processing x-ray diffraction data. The value of 2θ75to calculate the value of d75on the basis of the following expression (2). The results are shown in table 9.

d75=λ/2sinθ75(2).

(3) Measurement of the wavelength of maximum absorption (λmax)

After dilution of each of the ink A1-G4 (each of which has a concentration of coloring material of 1.5%) in 2000 times with pure water, measured the wavelength of maximum absorption (λmax). The results are shown in table 9. The wavelength of maximum absorption (λmax) was measured under the following conditions.

Spectrophotometer: a recording spectrophotometer (trade mark U-3300, manufactured by Hitachi, Ltd.).

Measuring cell: quartz cuvette, 1 cm

Step wavelength of 0.1 nm.

Scan rate: 30 nm/min

Number of measurements: measurement was performed five times, receiving a mean value of five measurements.

(4) the Creation of a printed product

Each of the ink A1-G4, prepared as described above, was inserted in the printing device for inkjet printing (brand name : PIXUS 950I, manufactured by company CANON Inc.) to print a picture with a 13-level gradation on glossy inkjet printable media (brand PR-101, manufactured by company CANON Inc.) by changing the fill factor when printing to give it a value of 5%, 12%, 1%, 29%, 35%, 43%, 51%, 58%, 66%, 74%, 85%, 90% and 100%. Thus was created the printed product.

(5) evaluation of the resistance to the bronze sheen

Conducted visual inspection of the fill factor when printing in which the phenomenon of bronze shimmer appeared in the picture, with a 13-level gradation representing an established mentioned by way of the printed product to determine the fill factor when printing, in which arose the phenomenon of bronze shimmer. Generally speaking, the phenomenon bronze tint may occur with increasing fill factor when printing. In other words, the probability of the occurrence of the bronze phenomenon of tide increases when the ink have a fill factor when printing, less than one that shouldn't occur the phenomenon bronze tint, and the probability of occurrence of the bronze phenomenon of the tide decreases when the ink have a coefficient used when printing more than one, which should occur the phenomenon of bronze shimmer. Criteria of resistance to the bronze shimmer below. The evaluation results are shown in table 9.

A: fill Factor when printing, in which occurs the phenomenon bronze shimmer is 55% or more.

In: the fill Factor when printing, in which occurs the phenomenon bronze tint, is in the range of 40%≤ adjusted ient filling in print ≤ 55%.

From: fill Factor when printing, in which occurs the phenomenon bronze tint, is in the range of 35%≤ the fill factor when you print ≤40%.

D: fill Factor when printing, in which occurs the phenomenon bronze shimmer, less than 35%.

(6) Evaluation of resistance to surrounding gases

Created the above image of the printed product was placed in a device for testing ozone (trademark of OMS-H, manufactured by the firm SUGA TEST INSTRUMENTS) to be exposed to ozone in the environment having a temperature of 40°C, relative humidity 55% and the concentration of gaseous ozone 2 parts per million for 20 hours. The ratio of residual density was calculated by using the following expression (3), on the basis of optical density in the reflected light on the area of the printed image corresponding to the 50%increase fill factor, before and after the test in the ozone. Optical density in the reflected light was measured by means of the device Macbeth RD-918 (produced by the firm Macbeth). Criteria resistance to surrounding gases below. The evaluation results are shown in table 9.

The ratio of residual density = (dO3/dRef)×100% (3)

(in the expression (3), dO3is the optical density in the reflected light after exposure to ozone, and dRefPR is dstanley optical density in the reflected light prior to exposure to ozone).

A: the residual density is 83% or more.

In: the Ratio of residual densities less than 83%.

Table 9
InkThe value of d75[nm]The wavelength of maximum absorption, λmax [nm]Resistance to the bronze sheenResistance to surrounding gases
ExampleA17,51612,0AAnd
A27,50611,9AAnd
B110,59608,1InAnd
B2or 10.60608,0InAnd
C1of 6.71612,9AAnd
C26,72612,8AAnd
Comparative exampleA37,52611,8And
A47,52611,7And
B3or 10.60608,0And
B410,61 607,9And
C3of 6.73612,7And
C4of 6.71612,6And
D110,61607,9And
D2to 10.62607,8And
D310,63607,7DAnd
D410,63607,7DAnd
E16,69613,1AndIn
E2of 6.68613,2AndIn
E36,69613,1AndIn
E4of 6.68613,2AndIn
F114,38603,0DAnd
F214,39602,9DAnd
F314,39602,9DAnd
F414,40602,8DAnd
G16,00614,0And
G26,01613,9AndIn
G36,02613,8AndIn
G46,03613,6AndB

In accordance with the above results have confirmed the following. In case if you are using a coloring material according to the present invention, which is a compound represented by the General formula (I)or its salt, resistance to surrounding gases may be poor when the value of d75ink less 6,70 nm, and the resistance to the bronze sheen may be poor when the value of d75ink is less than or 10.60 nm. Based on the above result also confirmed that it is possible to obtain excellent resistance to bronze tint if the content (wt.%) 2-pyrrolidone is 50.0% or more with respect to content (wt.%) coloring material.

This application claims the priority based on Japanese patent applications No. 2004-196451, filed July 2, 2004, and 2005-192190, filed June 30, 2005, and both are included in the description by reference.

1. Ink for inkjet printing containing at least water, a water-soluble organic solvent and Abrasiv the Mering material, and

coloring material is a compound represented by the following General formula (I)or its salt,

content (wt.%) coloring material is in the range of 0.5 wt.% ≤ the content < 3.0 wt.% with respect to the total mass of the ink for inkjet printing and

content (wt.%) 2-pyrrolidone in water-soluble organic solvent is 50.0% or more with respect to content (wt.%) coloring material, and

in the distribution of the dispersion of the distances measured by the method of small-angle x-ray scattering, molecular aggregates in the ink for inkjet printing, the concentration of the coloring material which is adjusted to 0.5 wt.%, the value of d75the dispersion distance corresponding to 75% of the distribution is in the range 6,70 nm ≤ d75≤ or 10.60 nm:

General formula (I)

where M is alkali metal or ammonium; each of the radicals R1and R2independently represents a hydrogen atom, a sulfonic group or carboxyl group, (provided that R1and R2is not simultaneously a hydrogen atom),

Y represents a chlorine atom, hydroxyl group, amino group or monoalkylamines or dialkylamines,

l p is ecstasy a number from 0 to 2,

m represents a number from 1 to 3, and

n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4, and the provisions, which contain the substituents are provisions 4 or 4').

2. Ink for inkjet printing according to claim 1, in which the coloring material is a compound represented by the following General formula (II)or its salt:

where M is alkali metal or ammonium,

l represents a number from 0 to 2,

m represents a number from 1 to 3, and

n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4, and the provisions, which contain the substituents are provisions 4 or 4').

3. Ink for inkjet printing according to claim 1, in which the coloring material contains at least one compound in which l≥1.

4. Ink for inkjet printing according to claim 1, in which the value of d75is 9,10 nm or less.

5. Ink for inkjet printing containing at least water, a water-soluble organic solvent and a coloring material, and

coloring material is a compound represented by the following General formula (I)or its salt,

content (wt.%) coloring material is in the range of 0.5 wt.% ≤ the content < 3.0 wt.% in relation to the amounts of the nuclear biological chemical (NBC weight of the ink for inkjet printing and

content (wt.%) 2-pyrrolidone in water-soluble organic solvent is 50.0% or more with respect to content (wt.%) coloring material, and

wavelength (λmax), the maximum absorption is obtained by measuring the absorptive capacity of the ink prepared by dilution of the ink for inkjet printing 2000 times, is in the range 608,0 nm ≤ λmax ≤ 613,0 nm:

General formula (I)

where M is alkali metal or ammonium; each of the radicals R1and R2independently represents a hydrogen atom, a sulfonic group or a carboxyl group (provided that R1and R2is not simultaneously a hydrogen atom),

Y represents a chlorine atom, hydroxyl group, amino group or monoalkylamines or dialkylamines,

l represents a number from 0 to 2,

m represents a number from 1 to 3, and

n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4, and the provisions, which contain the substituents are provisions 4 or 4').

6. Ink for inkjet printing according to claim 5, in which the coloring material is a compound represented by the following General formula (II)or its salt:

General formula (II)

where M is alkali metal or ammonium,

l represents a number from 0 to 2,

m represents a number from 1 to 3, and

n represents a number from 1 to 3 (provided that l+m+n is from 3 to 4, and the provisions, which contain the substituents are provisions 4 or 4').

7. Ink for inkjet printing according to claim 5, in which the coloring material contains at least one compound in which l≥1.

8. Ink for inkjet printing according to claim 5, in which the wavelength (λmax), the maximum absorption is in the range 610,0 nm ≤ λmax ≤ 613,0 nm.

9. Method of inkjet printing, providing for the ejection of ink by way of creating a jet of ink, these inks contain ink for inkjet printing according to claim 1 or 5.

10. The ink cartridge containing the storing ink portion for storing ink, these inks contain ink for inkjet printing according to claim 1 or 5.

11. The printing unit comprising storing the ink portion for storing ink and a printhead to eject ink, these inks contain ink for inkjet printing according to claim 1 or 5.

12. Printer inkjet, containing stores ink portion for storing ink and the print head to eject the ink, thus referred to the ink containing the ink for inkjet printing according to claim 1 or 5.



 

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1 tbl, 3 ex

FIELD: chemistry.

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4 cl, 3 tbl, 3 ex

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4 cl, 3 tbl, 3 ex

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SUBSTANCE: invention concerns polymerous sheet perceiving thermally embossed image, on which with help of pigments or inks heat transmission it is capable to record an image with high contrast and definition. Image-receiving sheet for thermal image transfer contains lamellar basis with perceiving embossing image resinous layer. Current layer is coated by aquatic compound, which includes at least one water-dispersible resin on the basis of aliphatic (polyether)-polyurethane and at least one water-dispersible resin on the basis of aliphatic (polyester)-polyurethane or resin water dispersion on the basis of aliphatic (polyether)-polyurethane, silicon dioxide dispersion and wax anionic aqueous emulsion, and also aquatic coupling agent. Proposed invention provides receiving of perceiving layer with aquatic compounds usage, with image formation of high contrast range and storage stability.

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20 cl, 1 dwg, 2 tbl, 2 ex

FIELD: soft wares, paper.

SUBSTANCE: invention concerns polymerous sheet perceiving thermally embossed image, on which with help of pigments or inks heat transmission it is capable to record an image with high contrast and definition. Image-receiving sheet for thermal image transfer contains lamellar basis with perceiving embossing image resinous layer. Current layer is coated by aquatic compound, which includes at least one water-dispersible resin on the basis of aliphatic (polyether)-polyurethane and at least one water-dispersible resin on the basis of aliphatic (polyester)-polyurethane or resin water dispersion on the basis of aliphatic (polyether)-polyurethane, silicon dioxide dispersion and wax anionic aqueous emulsion, and also aquatic coupling agent. Proposed invention provides receiving of perceiving layer with aquatic compounds usage, with image formation of high contrast range and storage stability.

EFFECT: receiving of perceiving layer with aquatic compounds usage, with image formation of high contrast range and storage stability.

20 cl, 1 dwg, 2 tbl, 2 ex

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

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

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: image generation.

SUBSTANCE: image generation element includes chemical compound in crystalline form, which transforms to amorphous form, which has its own color, different from color of crystalline form. Image generation temperature mainly does not depend on time of heating.

EFFECT: increased efficiency.

2 cl, 8 app, 3 dwg

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