JP2003238848A - Ink for inkjet printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink for inkjet printing, excellent in shelf stability and delivery stability, and having sufficient efficiency of transfer to cloth and sufficient color reproducibility. <P>SOLUTION: The ink for inkjet printing at least contains 2.0 to 20 wt.% of a dye insoluble or hardly soluble in water, a compound serving to enhance the dispersibility of the dye, a water-soluble organic compound, and water, wherein the dye has a mean particle diameter of 0.1-0.5 μm and wherein the ink has a pH of 7.1 to 8.9, an electric conductivity of 4 to 25 mS/cm and a retention of concentration of 30% or higher. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
For dyeing ink, transfer by inkjet method
Printing (printing) images and patterns on paper and other media
Images, patterns, etc. formed on transfer paper etc.
It is transferred to a fabric such as a product or a fiber product from the fabric by a transfer method.
An image used to transfer images and the like to obtain dyed textile products.
Ink jet (transfer) printing ink or ink jet
Fabrics such as non-woven fabrics, woven fabrics and knitted fabrics
Prints images and patterns directly on textile products
For inkjet printing used to obtain textile products
Ink, storage stability, ejection stability, transfer efficiency,
Ink-jet printing ink with excellent dyeing rate and color reproducibility
About [0002] Printing of images and patterns on textiles such as fabrics
In the method, the main ones are screen printing,
Roller printing, all of which are mass-produced in small varieties
This method is excellent in high speed. Only
However, these methods are not suitable for high-mix low-volume production.
It is a quick method to respond to orders and trends
However, it is not suitable. Recently these screen printing
It is not necessary to make a plate in place of
Can respond to high-mix low-volume production and quickly respond to orders and trends
There are many inkjet printing methods that can be used.
Proposed. Among them, images and patterns etc. are directly
Dyeing by jetting dye ink with ink jet print method
The so-called direct inkjet printing method
Dye ink is jetted on the paper by inkjet printing
To form an image, pattern, etc. on the transfer paper.
Images and patterns formed on fabrics and textiles by heat or pressure
There is a so-called transfer inkjet printing method for transferring,
Many proposals have been made for these. [0003] Problems that have been conventionally known
In ink jet printing, for example, direct
For fabrics and textile products by inkjet printing
In the method of printing and forming images and patterns directly,
No need to plate, can handle high-mix low-volume production, order
It has many advantages such as being able to respond quickly to
Have been developed,
Various issues are emerging. These challenges include:
Inks used in these inkjet printing systems
But the disperse or sublimable dye used in it
Most are hardly soluble dyes or water-insoluble dyes.
For all easy-to-use aqueous inks, disperse dyes or
Fine dispersion of the flower dye in water is required, so fine dispersion
Precipitated dye causes sedimentation, aggregation, denaturation, etc.
Poor stability and ink jet printing
Clogging of the nozzle of the printer
Poor qualities, or images and patterns on transfer paper by jetting ink
Etc. directly or once formed on transfer paper
When transferring images and patterns onto fabrics and textiles with heat and pressure
In addition, the dyeing rate fixed to textile products is not enough,
The transfer efficiency of the sublimable dye on the transfer paper is not sufficient.
For example, the color reproducibility is inferior. Conventional ink jet printing system
In order to solve the problem in the ink used for
Particles of finely dispersed or sublimable dyes in water
Keep the diameter as small as possible and keep particles of 2 μm or more in the ink.
It is proposed that the component is not included in the program (Japanese Patent Laid-Open No. 52-015687).
And Japanese Patent Application Laid-Open No. 08-176971)
Improves stability. Further, JP-A-52-01568
No. 7 discloses a viscosity of 10 cPS (centipoise at 25 ° C.).
The surface tension is 40 dyncm below. ^-1 (Dyne)
Above, the electric resistivity is 50-500Ω · cm and PH is
Transfer ink jet print of 6 or less or 8 or more
Inkjet ink used in the system is disclosed
I have. Japanese Patent Application Laid-Open No. 52-015687 also discloses
Water-soluble organic compounds such as ethylene glycol and glycerin
Product, sodium salt of polycarboxylic acid, sulfated naphthalene
-Sublimation of sodium salt of formaldehyde condensate, etc.
A compound that enhances the dispersibility of the reactive dye in the ink
It is also disclosed. However, these prior disclosed technologies
Still have problems with storage stability and ejection stability.
Sufficient enough to transfer the image or pattern once formed on the transfer paper
This transfer paper rises when transferring onto fabric or textiles with heat or pressure.
Insufficient transfer efficiency of Chinese dyes, fabrics and textiles
It is still insufficient that the color reproducibility above is not sufficient
And all of these practical performances are well balanced.
In other words, it has excellent storage stability and ejection stability.
Inkjet printing inks with sufficient imaging efficiency and color reproducibility
Is not reached. [0005] The present invention is based on such a conventional technique.
Balancing all practical performance that solved the issues facing surgery
Well-maintained, that is, storage stability and ejection stability
Inkjet printing with excellent transfer efficiency and color reproducibility
The present inventors provide various types of inks.
After repeated discussions, the density maintenance rate of the ink was 30% or more.
For the first time, it is excellent in practicality that solved the conventional problems
Found that an ink for inkjet printing can be obtained
Was. That is, the present invention relates to the method of
Water-insoluble dye (disperse dye or sublimable dye), water-insoluble
Compounds that enhance dispersibility of dissolvable dyes, water-soluble organic compounds,
Inkjet printing ink containing at least water
The average particle diameter of the poorly water-soluble dye is 0.1 μm
To 0.5 μm, the inkjet printing
Characterized in that the density maintenance rate of the ink for use is 30% or more.
Ink for ink jet textile printing. The present invention relates to water
Disperse dyes or sublimates that are hardly soluble or insoluble in water
When using dyes to form inks for inkjet printing
To prevent chemical denaturation of the dye
Providing appropriate conductivity as ink jet type ink
To add a conductivity-imparting agent such as an inorganic alkali
In this case, the conductivity of the ink
And average particle diameter of dyes should be 0.1 to 0.5 μm
Control, storage stability, ejection stability,
Excellent balance that satisfies all of qualitative and transfer efficiency
That cannot be used as an ink for inkjet transfer printing
It has been reached after various studies from the findings. You
That is, by adding a conductivity-imparting agent, PH and conductivity are both
The dye is selected so as to be in a specific range, and the average particle diameter of the dye is set to 0.1.
An ink with a density of 1 μm to 0.5 μm and a density
Only when the retention rate is 30% or more, is the storage stability for the first time
Performance, ejection stability, color stability over time, and transfer efficiency
Excellent balanced and excellent inkjet printing
It has been found that it becomes ink. DETAILED DESCRIPTION OF THE INVENTION In the present invention, a poorly water-soluble dye
Sublimable dyes or disperse dyes are particularly limited
Instead, conventionally known dyes can be used. For example,
Luso (para-chloroacetaminophenyl azo) -para-
Cresol, ortho (para-acetaminophenyl)
Zo) -para-cresol, 3-methyl-4- (ortho-nitro
-Para-methylphenylazo) -5-pyrazolone, ortho
-Chlorobendiazodyl-azo-para-chlorophenol,
Para-phenylazo-N-, N-dimethylaniline, para
-Phenylazo-N-, N-diethylaniline, 1,4-
Diamino-2,3-dichloroanthraquinone, 1-methyl
Amino-4-phenylaminoanthraquinone, 1-amino
No-2-phenoxy-4-hydroxyanthraquinone, 1-
Amino-2-methylphenoxy-4-hydroxyanthraki
Non, 1,4-diisopropylaminoanthraquinone,
1,5-diisopropylaminoanthraquinone, 1-amido
No-2-chloro-4-hydroxyanthraquinone, 1-amido
No-2-bromo-4-hydroxyanthraquinone and the like,
C. I. Disperse Yellow 3,4,5,7,9,5
1, 54, 211, 215, 224, C.I. I. Dispa
Reds 1,4,5,7,11,75,78,10
5,106,122,132,151,303, C.I.
I. Disperse Blue 3, 7, 9, 16, 19, 4
5, 64, 102, 115, 171, 197, 207,
214, 259, 287, 295, 330, etc.
However, the present invention is not limited to these. Of these dyes
The sublimation point of sublimation dye is 150 ℃
0 ° C. is preferable, and 170 ° C. is more preferable.
To 220 ° C. In the present invention, these poorly water-soluble dyes
Printing of disperse dyes or sublimable dyes
A disperse dye which is a poorly water-soluble dye in
The average particle size of the sublimable dye is from 0.10 μm to 0.5 μm.
The range is preferable, and the average particle diameter is less than 0.10 μm.
Sometimes, on the contrary, flocculation tends to proceed, sedimentation becomes easier,
It is difficult to obtain an ink with a maintenance rate of 30% or more.
Inferior in stability and at the nozzle
Clogging is likely to occur, resulting in poor ejection stability.
When the average particle size exceeds 0.5 μm,
As the ink proceeds to sedimentation and the density maintenance rate becomes 30% or more,
And becomes inferior in storage stability, and
The nozzle is easily clogged and the ejection stability is poor.
Will be. Factors that deviate from these average particle diameters
Less than 0.1μm or 0.5μm
Control of the dispersion method to remove
Removal by centrifugation or filtration can be employed. What
The average particle size is measured by laser light scattering particle size distribution measurement.
It was also measured using LPA-360 (Otsuka Electronics)
It is. The ink for ink jet textile printing of the present invention
Of disperse dyes or sublimable dyes
The content is preferably from 2.0 to 20% by weight, more preferably
Preferably, it is 5 to 15% by weight and is a poorly water-soluble dye.
2.0% by weight of a certain disperse dye or sublimable dye
If it is less, the color is insufficient and the print is dark
To get high quality textile dyeing
I can't do anything. In addition, the content exceeds 20% by weight.
When used, disperse dyes that are poorly water-soluble dyes or sublimation
Agglomeration of the particles of the dye is likely to occur, and the concentration maintenance rate is 3%.
0% or more of the ink becomes difficult to obtain, and the average particle size of the dye
The diameter is in the range of 0.10 μm to 0.5 μm, and the ink p
H is 7.1 to 8.9 and conductivity is 4 to 25
(MS / cm), the concentration retention rate is less than 30%
Inferior in storage stability.
Even they tend to be easily clogged. The dispersion which is a poorly water-soluble dye in the present invention
As a compound that enhances the dispersibility of dyes or sublimable dyes
Can be used a conventionally known dispersant, is particularly limited
But not anionic, nonionic or cationic
Surfactants and the like can be used. For example, fatty acid salts, al
Killed sulphate, alkyl benzene sulphonic acid
Salt, alkyl naphthalene sulfonate, alkyl phosphoric acid
Ester salt, formaldehyde of naphthalenesulfonic acid
Hyd condensate, polyoxyethylene alkyl sulfate
Salt, polyoxyethylene alkyl ether, polyoxy
Ethylene propylene alkyl ether, polyoxyethylene
Lenphenyl ether, fatty acid ester, polyoxye
Tylenealkylamine, glycerin fatty acid ester,
Lioxyethylene propylene block polymer, neope
Ethylene glycol ethylene oxide adduct, lignin
Sodium sulfonate, polyoxyethylene alkyl
Ammonium salt, fatty acid ammonium salt, acetylene
Glycol, acetylene glycol ethylene oxide
Adduct, modified polyvinyl alcohol, cellulose
And sorbitan fatty acid esters.
Disperse dyes or sublimable dyes which are poorly water-soluble dyes
For inkjet printing of compounds that enhance dispersibility of dyes
Is preferably in the range of 0.2 to 25% by weight.
Preferably, the pH of the ink for ink jet textile printing of the present invention
Is from 7.1 to 8.9 and the conductivity is from 4 to 25
(MS / cm) so that the content of other ink contents
It is necessary to adjust the properties and use within this content
There is. In the present invention, the water-soluble organic compound is effective.
To illustrate by function, wetting agents, PH regulators, viscosity regulators,
There are preservatives, defoamers, etc.
It is selected and used appropriately to maintain the required performance as a dyeing ink.
And does not specifically limit its efficacy
However, in the present invention, at least one of them is contained.
Is preferred. This water-soluble organic compound
Are those used in conventional inkjet inks
Can be selected and used as appropriate.
Although the pH of the ink for ink jet textile printing of the present invention is not
7.1 to 8.9 and a conductivity of 4 to 25 (m
S / cm) and the content of other ink contents.
And its properties must be adjusted before use.
Examples of organic compounds include glycerin and polyethylene oxide.
Oxide, glycerin alkyl ether, polyethylene
Oxide alkyl ether, hydroxyethyl cellulose
Ose, polyvinyl alcohol, carboxymethyl cell
Loin, starch, monoethanolamine, dimethylami
Noethanolamine, dioxane, dimethyl sulfoxide
Side, dimethylformamide, ethylene glycol
, Diethylene glycol, triethylene glycol,
Tetraethylene glycol, piperidine, morpholine
And the like, but are not limited thereto. [0011] The present invention relates to a method for preparing the composition from 2.0% by weight to 20% by weight.
Disperse dyes or sublimable dyes that are poorly water-soluble dyes,
Compounds that enhance dispersibility of dyes, water-soluble organic compounds, and water
Ink-jet printing inks containing at least
The average particle size of the dye is 0.1 μm to 0.5 μm.
Range, and the pH of the ink for inkjet printing is
7.1 to 8.9 and a conductivity of 4 to 25 (m
S / cm) and the concentration maintenance rate is 30% or more.
Inkjet textile printing inks that have certain requirements
However, the disperse dye which is the water-insoluble dye described above or
Are sublimable dyes, compounds that enhance the dispersibility of these dyes, water
In addition to the essential constituents of soluble organic compounds and water, conductivity modifiers
It is preferred to use As this conductivity regulator,
Lithium chloride, ammonium chloride, lithium nitrate, nitric acid
Ammonium, lithium nitrite, ammonium nitrite,
Lithium acetate, ammonium acetate, potassium acetate, phosphoric acid
Sodium hydrogen, sodium dihydrogen phosphate, sodium sulfate
, Sodium hydroxide, ammonium hydroxide, etc.
But not limited to these,
In balance with other components that make up the ink for textile printing.
It is only necessary to use a suitable choice. Inkjet of water as solvent
The content of the printing ink is such that the ink of the present invention
If the degree maintenance rate is in a range suitable for being 30% or more,
At this time, the pH is 7.1 to 8.9 and the conductivity is
So that the viscosity of the ink is from 4 to 25 (mS / cm)
It may be used in the range of 1 to 10 mPaS.
In addition, the content and content of other ink contents
It is necessary to adjust the properties and use. The ink for ink jet textile printing of the present invention is:
Disperse, filter, and centrifuge the above ink components.
It can be manufactured by performing processes such as separation, ion exchange, etc.
You. Dispersion (including micronization and grinding), filtration, centrifugation,
For the treatment such as ion exchange, any known treatment method can be used.
It can be used without any particular limitation. Get
Ink for ink jet textile printing
7.1 to 8.9 and a conductivity of 4 to 25 (m
S / cm) is appropriate.
Unknown, but the pH and conductivity of this ink are outside the above range
If the concentration maintenance rate is less than 30%
Mostly sedimentation stability during storage and stability of ink color over time
Performance, ejection stability, and when the printer is
Characteristics that are unlikely to cause nozzle clogging and the transfer efficiency over time
Stability is likely to be impaired. The present invention
Ink jet printing ink has a density maintenance rate of 30
%, Only when it is more than 10%
In addition, it is excellent in transfer efficiency and dyeing rate. In the present invention
The “concentration maintenance rate” is measured as follows.
is there. Take 10 ml of the ink to be measured, and centrifuge the tube (about 10 mm
Inject 8 ml into the (diameter). Centrifuge (high-speed cold centrifuge)
GRX-220 manufactured by Tommy Seiko Co., Ltd.)
Centrifuge at 25 ° C and centrifuge.
Remove 1 000 μl of 1 cm from the top
Diluted 1000- to 500-fold depending on the
Using the wavelength of the value at the maximum absorption wavelength, a spectrophotometer (U-2001
Absorbance with a double-beam double-beam spectrophotometer (HITACHI)
, Convert, and concentrate as a percentage of the value before centrifugation.
The degree maintenance rate was calculated and obtained. The ink jet according to the present invention
Printing (printing) using the
Multi inkjet system, piezo inkjet system,
Various types of inkjet, such as bipolar and multi-deflection systems
Without limitation to one of the methods,
Printing with the selected inkjet method
However, the ink for inkjet printing according to the present invention
Is optimally used with the piezo inkjet method.
Yes, using a piezo inkjet printer
Transfer specific images, characters and patterns to transfer paper, textiles and fabrics.
Printing, transfer to textiles and sticking in post-processing
Gives the most desirable textile dyeings.
You. Examples will be described below, but the present invention is not limited to these.
It is not specified. Example 1 Kayaset Red B sublimable dye (manufactured by Nippon Kayaku;
Sublimation dye) was washed with distilled water and dried, 10 parts
(Parts by weight, hereinafter the same), a compound that enhances the dispersibility of the dye
5 parts of sodium salt of ligninsulfonic acid
Diethylene glycol as a reactive organic compound, 2 parts
83 parts of exchanged water with zirconia beads of 0.3 mm diameter
The average particle diameter becomes 0.35 μm
Until dispersed. The obtained dispersion is subjected to continuous centrifugal separation.
Coarse particles and ultra-fine particles are separated and filtered.
80 parts of the stock solution were obtained. Sodium hydrogen phosphate in 75 parts of undiluted solution
And glycerin 0.5 part.
After stirring, homogenizing and filtering, inkjet
Several types of printing inks were obtained. From this
PH of inkjet transfer printing inks
Tar MP220 (METLER TOLEDO)
25 ° C.) and electric conductivity (electric conductivity meter DS-14)
(Measured using HORIBA, Ltd .; 25 ° C) and viscosity
(E-type viscometer VISCONIC ED (Tokime Corporation)
And 25 ° C). As a result of the measurement
Is described below. The average particle size of the sublimable dye is 0.31 μm
there were. pH; 7.3 Conductivity; 4.2 (mS / cm) Viscosity
Degree; 5.0 (mPaS) pH; 7.5 conductivity; 8.0 (mS / cm) viscosity
Degree; 5.6 (mPaS) pH; 7.8 Conductivity; 11.6 (mS / cm) Viscosity
Degree; 6.1 (mPaS) pH; 8.0 conductivity; 14.6 (mS / cm) viscosity
Degree; 6.6 (mPaS) pH; 8.8 Conductivity; 24.9 (mS / cm) Viscosity
Degree: 7.2 (mPaS) From these ink jet printing and printing inks
As a measure of storage stability and ejection stability,
Is described below. In addition, each of these inkjet transfer printing
Ink for piezo type inkjet printer
Load the cartridges and print for 1 hour
・ Repeat a series of 23-hour pauses (only
Once every 7 days, there is a 24 hour pause)
Measure the number of days when nozzle clogging occurs due to white spots.
The “ejection stability” (days) was evaluated by the number of days, and was evaluated as follows. Ma
Perform printing in the same way as evaluating discharge stability
・ After a pause, printed on transfer paper three months later
Change of the color of the object from the initial one (at the time of ink creation)
("Grain change-1") and the printed matter on the transfer paper
180 degrees, 25 seconds, 0.5 kg /
The first transfer product on polyester fabric transferred at cm-2 pressure
The change in the color of the period (“color change-2”)
Assess the changes to the initial ones as follows:
Below. There is no change from the initial one: "1" There is a little change from the initial one: "2" There is a big change from the initial one: "3" Density maintenance rate; 35 (%) Change-1; "1" Color change-2; "2" Density maintenance rate; 66 (%) Color change-1; "1" Color change-2; "1" Density maintenance rate; 73 (%) Color change- 1; "1" color change-2; "1" density maintenance rate; 81 (%) color change-1; "1" color change-2; "1" density maintenance rate; 42 (%) color change-1; "2" Color change-2; "2" Discharge stability; 55 (day) Discharge stability; 145 (day) Discharge stability; 195 (day) Discharge stability; 185 (day) Discharge stability: 65 (day) ) As can be seen from the above evaluation results, storage stability,
Density maintenance rate, color change -1, color change 2, ejection stability
Both had some problems, but they did not hinder practical use.
Are all excellent inks.
Was. Comparative Example 1 Ink for ink-jet transfer printing in the same manner as in Example 1.
It was created. However, the average particle size of the sublimable dye at that time
Was 0.5 μm. Each evaluation was performed in the same manner as in Example 1.
The results obtained are described below. * PH; 7.8 Conductivity; 11.5 (mS / cm) Viscosity
Degree; 6.3 (mPaS) * Concentration maintenance rate: 3.0 (%) Color change -1; "3"
Color change-2; "3" * Ejection stability; 15 (days) As can be seen from the above evaluation results, the ink of the comparative example is preserved.
Stability, density maintenance rate, tint change-1, tint change-2, discharge
The ink is problematic in terms of output stability and has problems in practical use.
there were. Example 2 A sublimable dye, Kayaset, Yellow, AG (Nippon Kayaku)
(Sublimable dye) was washed with distilled water and dried.
2 parts (parts by weight, hereinafter the same), a compound that enhances the dispersibility of the dye
Formaldehyde of naphthalenesulfonic acid as a product
10 parts of condensate, water-soluble organic compound
Recall 2 parts, ion exchange water 77 parts, 0.3m
Average particle size in bead mill using zirconia beads of m diameter
The particles were dispersed until the diameter became 0.33 μm. The resulting dispersion
Is separated by a continuous centrifuge into coarse particles and ultrafine particles.
The mixture was further filtered to obtain 80 parts of an ink stock solution. Stock solution 7
5 parts and several parts of sodium dihydrogen phosphate
And 0.6 parts of glycerin, and stir to homogenize
Several types of ink for inkjet transfer printing
(From) got. Each evaluation was performed in the same manner as in Example 1.
The results obtained are described below. pH; 7.3 Conductivity; 4.5 (mS / cm) Viscosity; 5.0 (mPaS) pH; 7.5 Conductivity; 8.0 (mS / cm) Viscosity; 6.6 (mPaS) pH; 7.8 conductivity; 11.6 (mS / cm) viscosity; 6.9 (mPaS) pH; 8.0 conductivity; 14.6 (mS / cm) viscosity; 7.6 (mPaS) pH; 6 Conductivity; 24.9 (mS / cm) Viscosity; 8.2 (mPaS) Concentration maintenance rate: 35 (%) Color change -1; "2" Color change -2; "2" Density maintenance rate: 68 ( %) Color change -1; "1" Color change -2; "1" Density maintenance rate; 75 (%) Color change -1; "1" Color change-2; "1" Density maintenance rate; 81 (%) Color change -1; "1" Color change -2; "1" Density maintenance rate; 32 (%) Color change -1; "2" Color change -2; "2" Ejection stability; Qualitative: 185 (day) Discharge stability: 191 (day) Discharge stability: 172 (day) Discharge stability: 45 (day) As can be seen from the evaluation results, storage stability,
Density maintenance rate, color change -1, color change 2, ejection stability
Both had some problems, but they did not hinder practical use.
Are all excellent inks.
Was. Comparative Example 2 Ink for ink-jet transfer printing in the same manner as in Example 1.
It was created. However, the average particle size of the sublimable dye at that time
Is 0.35 μm, pH; 9.0, conductivity; 31.
5 (mS / cm) Viscosity; 6.3 (mPaS)
Was. The results of each evaluation performed in the same manner as in Example 1 are shown below.
You. * Concentration maintenance rate: 15 (%) Change in color tone -1; "3"
Color change-2; "3" * Ejection stability; 18 (days) As can be seen from the above evaluation results, the ink of the comparative example is preserved.
Stability, density maintenance rate, tint change-1, tint change-2, discharge
The ink is problematic in terms of output stability and has problems in practical use.
there were. EFFECT OF THE INVENTION The ink for ink-jet printing of the present invention
Selects the pH value range and the conductivity range, and determines the average particle size of the dye.
The diameter is changed from 0.1 to 0.5 μm and the concentration retention rate is 3
By setting it to 0% or more, the conventional ink for ink-jet printing can be used.
Storage stability, discharge stability, aging
An ink jet that has a good balance of color change resistance
It has been found that there is an ink for textile printing, and the ink of the present invention
Fabrics and textiles are the first to be used with jet printing inks.
Good dyeing of textiles by inkjet method is stable
That can be practically used as an ink for ink-jet printing.
It turned out to be extremely useful for practical use.

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Ryutaro Ogawa             Kuromon Dori Oikegami Le Textile Shop, Kyoto, Kyoto             212 Uepo & Maji Stock Exchange             In-house F term (reference) 2C056 EA04 FC01                 2H086 BA01 BA52 BA53 BA56 BA60                 4H057 AA01 BA08 BA12 DA01 FA42                       GA05 HA01 JA10 JB02                 4J039 AB01 AB02 AD06 AE07 BC06                       BC07 BC09 BC10 BC11 BC12                       BC31 BC35 BC50 BC53 BC54                       BE08 BE12 BE22 BE29 BE30                       CA06 EA44 FA03 GA05 GA24

Claims (1)

Claims (1) 2.0 to 20% by weight of a poorly water-soluble dye (dispersible dye or sublimable dye), a compound for increasing the dispersibility of a poorly water-soluble dye, a water-soluble organic compound, An ink for inkjet printing containing at least water, wherein the poorly water-soluble dye has an average particle diameter of 0.1 μm to 0.5 μm.
An ink for ink-jet textile printing, wherein the ink has an average particle diameter in the range of μm, and the concentration maintenance ratio of the ink for ink-jet textile printing is 30% or more.