JP2019077980A - Inkjet textile printing method and ink set - Google Patents

Abstract

To provide an inkjet textile printing method, which less likely causes dyeing inhibition and less likely causes difference in the color developability between top and back surfaces of a printed matter.SOLUTION: The inkjet textile printing method includes: a recording step of depositing an ink composition comprising a dye on a surface of a fabric by an inkjet method; and a penetrant deposition step of depositing a penetrant on the top or back surface of the fabric prior to or after the recording step. The penetrant comprises a nitrogen-containing compound having a boiling point of 230 to 260°C and an alkyl polyol having a boiling point of 230 to 260°C and substantially does not contain an alkyl polyol having a boiling point of over 260°C.SELECTED DRAWING: None

Description

  The present invention relates to an ink jet printing method and an ink set.

  The ink jet recording method is a relatively simple apparatus and can record high definition images, and has been rapidly developed in various fields. Among them, various studies have been made on printing methods using an ink jet method. For example, in order to provide an ink jet printing method in which ink bleeding can be reduced and an inked print having a small difference in dyed density of a pattern on the front and back can be obtained in Patent Document 1, printing is performed on a fabric by an ink jet method. An ink-jet printing method, comprising: an ink-jet printing step of attaching an ink composition containing a dye to one surface of the fabric; and a cloth surface to which the ink composition is attached as a step following the ink-jet printing step. And at least one of a fabric surface treatment step of depositing a first permeation liquid, and a fabric back surface treatment step of depositing a second permeation solution on the fabric surface opposite to the surface on which the ink composition is deposited; And an ink jet printing method is disclosed.

JP, 2013-60689, A

  However, in the method described in Patent Document 1 in which a penetrant is simply used, there is a problem in that the color developability of the front and back of the printed matter is different depending on the composition of the penetrant.

  The present invention has been made to solve at least a part of the above-mentioned problems, and it is an object of the present invention to provide an ink jet printing method in which differences in color developability of front and back surfaces of printed matter are unlikely to occur.

  The present inventors diligently studied to solve the above problems. As a result, it has been found that the above-mentioned problems can be solved by using a penetrant having a predetermined composition, and the present invention has been completed.

That is, the present invention is as follows.
[1]
It has a recording step of depositing an ink composition containing a dye on the surface of the fabric by an inkjet method, and a penetrant deposition step of depositing a penetrant on the surface or back surface of the fabric before or after the recording step. ,
The permeation solution comprises a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C.
Ink jet printing method.
[2]
The inkjet textile printing method as described in said [1] whose content of the said nitrogen containing compound is 5.0-10 mass% with respect to 100 mass% of said penetrants.
[3]
The inkjet textile printing method as described in said [1] or [2] whose content of the said alkyl polyol is 20-40 mass% with respect to 100 mass% of said permeation liquids.
[4]
The inkjet textile printing method according to any one of [1] to [3], wherein the penetrant further comprises a glycol ether.
[5]
The ink composition contains a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C. The inkjet textile printing method of any one of preceding clause [1]-[4].
[6]
An ink composition containing a dye, and a penetrant,
The permeation solution comprises a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C.
Ink set.

  Hereinafter, the embodiment of the present invention (hereinafter referred to as "the present embodiment") will be described in detail, but the present invention is not limited to this, and various modifications can be made without departing from the scope of the invention. It is. The "surface of the fabric" refers to the surface of the fabric to which the ink composition is attached, and the "back of the fabric" refers to the surface of the fabric opposite to the surface to which the ink composition is attached.

[Ink jet printing method]
In the inkjet printing method of the present embodiment, a recording step of attaching an ink composition containing a dye to the surface of a fabric by an inkjet method, and a penetrant liquid is attached to the front or back surface of the fabric before or after the recording step. And penetrant deposition, wherein the penetrant comprises a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C. and has a boiling point of more than 260 ° C. It is substantially free of alkyl polyol.

  As printed matter, what provided the same recording on the surface and back of a textile may be called for. As a method of obtaining such a print, there is a method of attaching a penetrant that induces the penetration of the ink composition to the fabric before and after the ink composition is attached to the fabric. However, depending on the composition of the penetrant, there may be differences in color development between the front and back surfaces of the printed matter due to inhibition of dyeing (the dye is difficult to dye on the fabric) or the permeation liquid being dried before permeation. And the color development of the front and back of the printed matter is different due to the difficulty in drying the permeation liquid.

  On the other hand, in the present embodiment, by using the penetrant having a predetermined composition, it is possible to obtain a printed material in which the dyeing inhibition is unlikely to occur and the difference in coloration between the front and back surfaces is suppressed. Details will be described below.

[Recording process]
The recording step is a step of depositing an ink composition containing a dye on the surface of the fabric by an inkjet method. The ink jet system is not particularly limited, and examples thereof include a charge deflection system, a continuous system, and an on-demand system (piezo system, bubble jet (registered trademark) system), and the like.

[Ink composition]
The ink composition may contain dyes, solvents, surfactants, ureas, saccharides, pH adjusters, chelating agents, preservatives, rust inhibitors, and other components.

(dye)
Dyes can be used as coloring materials. The dye is not particularly limited. I. Acid Yellow, C.I. I. Acid Red, C.I. I. Acid Blue, C.I. I. Acid orange, C.I. I. Acid Violet, C.I. I. Acid dyes such as acid black; I. Basic Yellow, C.I. I. Basic red, C.I. I. Basic Blue, C.I. I. Basic orange, C.I. I. Basic violet, C.I. I. A basic dye such as Basic Black; I. Direct Yellow, C.I. I. Direct red, C.I. I. Direct Blue, C.I. I. Direct orange, C.I. I. Direct violet, C.I. I. Direct dyes such as Directed Black; I. Reactive yellow, C.I. I. Reactive red, C.I. I. Reactive blue, C.I. I. Reactive orange, C.I. I. Reactive violet, C.I. I. Reactive dyes such as reactive black; I. Disperse Yellow, C.I. I. Disperse thread, C.I. I. Disperse Blue, C.I. I. Disperse orange, C.I. I. Disperse violet, C.I. I. Dispersed dyes such as disperse black may be mentioned. The above dyes may be used alone or in combination of two or more.

  The content of the dye is preferably 1 to 25% by mass, more preferably 4 to 21% by mass, and still more preferably 7 to 17% by mass with respect to 100% by mass of the ink composition. When the content of the dye is in the above range, excellent hiding power and color reproducibility tend to be obtained.

(solvent)
The solvent is not particularly limited, and, for example, water and an organic solvent can be used.

  Examples of water include pure water such as ion exchange water, ultrafiltered water, reverse osmosis water, and distilled water, and water from which ionic impurities have been removed as much as possible, such as ultrapure water. When water sterilized by ultraviolet irradiation or addition of hydrogen peroxide is used, the generation of mold and bacteria can be prevented when the ink composition is stored for a long time. This tends to further improve storage stability.

  The content of water is preferably 50 to 80% by mass, more preferably 55 to 75% by mass, and still more preferably 60 to 70% by mass with respect to 100% by mass of the ink composition.

  The organic solvent is not particularly limited, and examples thereof include nitrogen-containing compounds, alkyl polyols and glycol ethers. Among these, the ink composition contains a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C. contained in the penetrant liquid described later. It is preferable not to contain substantially the alkyl polyol which has these. Furthermore, the ink composition preferably contains a glycol ether which can be contained in the penetrant described later. The difference between the coloring properties of the front and back surfaces of the printed matter tends to be further suppressed by thus approximating the solvent composition of the ink composition and the solvent composition of the permeation liquid.

  The content of the organic solvent is preferably 0.1 to 50% by mass, more preferably 1 to 20% by mass, and still more preferably 12.5 to 17.5% with respect to 100% by mass of the ink composition. %. When the content of the organic solvent is in the above range, the difference in the coloring properties of the front and back surfaces of the printed material tends to be further suppressed.

(Surfactant)
The surfactant is not particularly limited, and examples thereof include an acetylene glycol surfactant, a fluorine surfactant, and a silicone surfactant. Among these, acetylene glycol surfactants are preferable from the viewpoint of permeability to the fabric.

  The acetylene glycol surfactant is not particularly limited, and examples thereof include 2,4,7,9-tetramethyl-5-decyne-4,7-diol and 2,4,7,9-tetramethyl-5- Alkylene oxide adducts of decyne-4,7-diol and alkylene oxide adducts of 2,4-dimethyl-5-decyn-4-ol and 2,4-dimethyl-5-decyn-4-ol One or more are preferable. The commercial product of the acetylene glycol surfactant is not particularly limited. For example, E series such as Olfin 104 series and Olfin E1010 (trade name of Air Products Japan, Inc.), Olfin PD- Examples thereof include 002 W, Surfynol 465, and Surfynol 61 (trade names of Nissin Chemical Industry CO. Ltd.). The acetylene glycol surfactant may be used alone or in combination of two or more.

  The fluorine-based surfactant is not particularly limited, and, for example, perfluoroalkyl sulfonates, perfluoroalkyl carboxylates, perfluoroalkyl phosphates, perfluoroalkyl ethylene oxide adducts, perfluoroalkyl betaines, and perfluorinated surfactants. And fluoroalkylamine oxide compounds. Especially as a commercial item of fluorine system surfactant, although not limited, for example, S-144, S-145 (made by Asahi Glass Co., Ltd.); FC-170C, FC-430, Florard-FC 4430 (made by Sumitomo 3M Ltd.) FSO, FSO-100, FSN, FSN-100, FS-300 (manufactured by Dupont); FT-250, 251 (manufactured by Neos Co., Ltd.) and the like. The fluorinated surfactants may be used alone or in combination of two or more.

  As silicone type surfactant, a polysiloxane type compound, a polyether modified | denatured organosiloxane, etc. are mentioned. Although it does not specifically limit as a commercial item of silicone type surfactant, Specifically, BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, BYK-347, BYK -348, BYK-349 (above trade name, made by Big Chemie Japan KK), KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640 KF-642, KF-643, KF-6020, X-22-4515, KF-6011, KF-6012, KF-6015, KF-6017 (all trade names, manufactured by Shin-Etsu Chemical Co., Ltd.), and the like.

  The content of the surfactant is preferably 0.1 to 5% by mass, and more preferably 0.5 to 2% by mass with respect to 100% by mass of the ink composition.

(Ureas)
Ureas function as a moisturizing agent for the ink composition or as a dyeing assistant for improving the dyeability of the dye. The ureas are not particularly limited, and examples thereof include urea, ethylene urea, tetramethyl urea, thiourea, 1,3-dimethyl-2-imidazolidinone and the like. When the ureas are contained, the content thereof is preferably 1 to 10% by mass based on the total mass of the ink composition.

(Sugars)
The sugar functions as a moisturizing agent which suppresses solidification and drying of the ink composition. Examples of saccharides include, but are not limited to, glucose, mannose, fructose, ribose, xylose, arabinose, galactose, aldonic acid, glucitol (sorbit), maltose, cellobiose, lactose, sucrose, trehalose, maltotriose, etc. Be

(PH adjuster)
The pH adjuster is not particularly limited. For example, potassium dihydrogen phosphate, disodium hydrogen phosphate, sodium hydroxide, lithium hydroxide, potassium hydroxide, ammonia, diethanolamine, triethanolamine, triisopropanolamine, carbonic acid Potassium, sodium carbonate, sodium hydrogen carbonate, trishydroxymethylaminomethane (THAM), 4- (2-hydroxyethyl) -1-piperazineethanesulfonic acid (HEPES), morpholinoethanesulfonic acid (MES), carbamoylmethyliminobisacetic acid (ADA), piperazine-1,4-bis (2-ethanesulfonic acid) (PIPES), N- (2-acetamido) -2-aminoethanesulfonic acid (ACES), colamine hydrochloride, N, N-bis (2) -Hydroxyethyl) -2- Good buffer such as aminoethane sulfonic acid (BES), N-tris (hydroxymethyl) methyl-2-aminoethane sulfonic acid (TES), acetamidoglycine, tricine, glycinamide, bicine, etc., phosphate buffer, tris buffer It can be mentioned. The pH adjusters may be used alone or in combination of two or more.

(Chelating agent)
The chelating agent is not particularly limited, and examples thereof include ethylenediaminetetraacetic acid and salts thereof (ethylenediaminetetraacetic acid dihydrogen disodium salt and the like) and the like.

(Preservative)
Examples of preservatives include, but are not limited to, sodium benzoate, sodium pentachlorophenol, sodium 2-pyridinethiol-1-oxide, sodium sorbate, sodium dehydroacetate, 1,2-dibenzisothiazolin-3-one The following may be mentioned: Pronexel CRL of Zeneca, Proxel BDN, Proxel GXL, Proxel XL.2, Proxel TN, Proxel LV), 4-chloro-3-methylphenol (Preventol CMK of Bayer) and the like. The preservative may be used singly or in combination of two or more.

(Rust inhibitor)
The antirust agent is not particularly limited, and examples thereof include benzotriazole and the like.

(Other ingredients)
The ink composition used in the present embodiment has an antioxidant, an ultraviolet ray, in order to maintain the storage stability and the ejection stability from the head well, to improve clogging, or to prevent the deterioration of the ink composition. Various additives such as absorbents, oxygen absorbents, solubilizers and the like can also be added as appropriate.

[Fabric]
The fibers constituting the fabric are not particularly limited, but, for example, natural fibers such as silk, cotton, hemp, and wool; synthetic fibers such as polyester fiber, nylon fiber, triacetate fiber, diacetate fiber, and polyamide fiber; rayon etc. There is a recycled fiber. The cloth may be a kind of fiber or a mixture of two or more kinds of fibers. Among these, fibers obtained by blending fibers having different permeability in particular are easy to obtain the effect of the penetrant. As the fabric, any of the above-mentioned fibers may be used in any form such as a woven fabric, a knitted fabric, and a non-woven fabric.

  The combination of the fabric and the dye is not particularly limited, and for example, a reactive dye and a fiber containing cellulose as a main component (cotton, hemp, rayon etc.), an acid dye and silk, wool, nylon fiber, and a basic dye Acrylic fibers, direct dyes and cotton, hemp, rayon, disperse dyes and polyester fibers may be mentioned. Among these, fibers containing a reactive dye and cellulose as main components, acid dyes and silk, wool and nylon fibers are preferable. With such a combination, the difference in color developability between the front and back of the printed material tends to be further suppressed. However, the combination of the fabric and the dye is not limited to this.

  According to the inkjet textile printing method of the present embodiment, it is possible to suppress the difference in the coloring properties of the front and back surfaces of the printed matter without adjusting the composition of the penetration liquid for each cloth by using the penetration liquid described later It becomes.

[Permeate adhesion process]
The penetrant attachment step is a step of attaching the penetrant to the front or back surface of the fabric before or after the recording step. The means for depositing the penetrant is not particularly limited, and examples thereof include a roller method, a spray method, and an ink jet method. Among these, the inkjet method is preferable from the viewpoint of being able to selectively attach the penetrant.

  The penetrant attachment step may be performed before, after, or both before and after the recording step. When the penetrant attachment step is performed before the recording step, it is preferable to perform the recording step before the penetrant attached to the fabric is dried. When the penetrant attachment step is performed after the recording step, the penetrant attachment step can be performed before or after the ink composition attached to the fabric is dried, and the ink composition attached to the fabric is It is preferable to carry out the penetrant attachment step before drying. The penetrant may be attached to the surface of the fabric, to the back surface, or to both the surface and the back surface.

[Penetration fluid]
The permeate contains a nitrogen-containing compound having a boiling point of 230 to 260 ° C., an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C.

(Nitrogen-containing compound having a boiling point of 230 to 260 ° C.)
Although it does not specifically limit as a nitrogen-containing compound which has a boiling point of 230-260 degreeC, For example, 2-pyrrolidone (245 degreeC), 5-methyl- 2-pyrrolidone (248 degreeC) is mentioned. Among these, 2-pyrrolidone is preferable. By including such a nitrogen-containing compound, the permeability is further improved, and the difference in the coloring properties of the front and back surfaces of the printed matter is further suppressed. The numerical values in parentheses represent the normal boiling point. These nitrogen-containing compounds may be used alone or in combination of two or more.

  The boiling point of the nitrogen-containing compound is 230 to 260 ° C, preferably 235 to 255 ° C, and more preferably 240 to 250 ° C. When the boiling point of the nitrogen-containing compound is in the above-described range, the difference in the coloring properties of the front and back surfaces of the printed material is further suppressed.

  The content of the nitrogen-containing compound having a boiling point of 230 to 260 ° C. is preferably 1.0 to 15% by mass, more preferably 2.5 to 12.5% by mass with respect to 100% by mass of the penetrant. It is more preferably 5.0 to 10% by mass. When the content of the nitrogen-containing compound having a boiling point of 230 to 260 ° C. is 1.0% by mass or more, the permeability is further improved, and the difference in the coloring properties of the front and back surfaces of the printing material is further suppressed. It is in. Moreover, when the content of the nitrogen-containing compound having a boiling point of 230 to 260 ° C. is 15% by mass or less, the drying property tends to be further improved.

(Alkyl polyol having a boiling point of 230 to 260 ° C.)
The alkylpolyol having a boiling point of 230 to 260 ° C. is not particularly limited, and, for example, 1,4-butanediol (230 ° C.), 2-methyl-2-propyl-1,3-propanediol (230 ° C.), Dipropylene glycol (230 ° C.), 1,5-pentanediol (242 ° C.), 2-ethyl-1,3-hexanediol (244 ° C.), diethylene glycol (245 ° C.), 3-methyl-1,5-pentanediol (249 ° C.) and 1,6-hexanediol (250 ° C.). Among these, diethylene glycol (245 ° C.) is more preferable. By including such an alkyl polyol, the clogging reliability is further improved when the permeation liquid is deposited by the inkjet method. The numerical values in parentheses represent the normal boiling point. These alkyl polyols may be used alone or in combination of two or more.

  The boiling point of the alkyl polyol is 230 to 260 ° C., preferably 235 to 255 ° C., and more preferably 240 to 250 ° C. When the boiling point of the alkyl polyol is in the above range, the difference in the coloring properties of the front and back surfaces of the printed material is further suppressed.

  The content of the alkyl polyol having a boiling point of 230 to 260 ° C. is preferably 10 to 50% by mass, more preferably 15 to 45% by mass, and further preferably 20 to 50% by mass with respect to 100% by mass of the penetrant. It is 40% by mass. When the content of the alkyl polyol having a boiling point of 230 to 260 ° C. is 10% by mass or more, clogging tends to be further suppressed when the penetrant is discharged by the ink jet nozzle.

(Alkyl polyol having a boiling point of over 260 ° C.)
The permeate is substantially free of alkyl polyols having a boiling point above 260 ° C. The term "substantially free" means that the content of the alkyl polyol having a boiling point of more than 260 ° C. is preferably 0 to 1.0% by mass, more preferably 0 to 1.0% by mass with respect to 100% by mass of the penetrant. It is 0.050% by mass, more preferably 0 to 0.10% by mass. By substantially containing no alkylpolyol having a boiling point of more than 260 ° C., the difference in the coloring properties of the front and back surfaces particularly in the printing of reactive dyes is further suppressed.

  Although it does not specifically limit as an alkyl polyol which has a boiling point more than 260 degreeC, For example, a triethylene glycol (287 degreeC), a glycerin (290 degreeC) is mentioned.

(Glycol ether)
The permeate may further contain glycol ether. The inclusion of the glycol ether tends to further improve the permeability and the continuous discharge stability. The glycol ether is not particularly limited. For example, dipropylene glycol dimethyl ether (171 ° C.), diethylene glycol ethyl methyl ether (176 ° C.), diethylene glycol isopropyl methyl ether (179 ° C.), dipropylene glycol monomethyl ether (188 ° C.), diethylene glycol Diethyl ether (189 ° C.), diethylene glycol monomethyl ether (194 ° C.), diethylene glycol butyl methyl ether (212 ° C.), tripropylene glycol dimethyl ether (215 ° C.), triethylene glycol dimethyl ether (216 ° C.), diethylene glycol monobutyl ether (230 ° C.), Ethylene glycol monophenyl ether (245 ° C), triethylene glycol Methyl ether (249 ° C.), diethylene glycol dibutyl ether (256 ° C.), triethylene glycol monobutyl ether (272 ° C.) and the like. Among these, glycol ethers having a boiling point of 230 to 260 ° C. are preferable, and diethylene glycol monobutyl ether (230 ° C.), ethylene glycol monophenyl ether (245 ° C.), triethylene glycol monomethyl ether (249 ° C.), diethylene glycol dibutyl ether (256) More preferred. Use of such glycol ether tends to further improve the color development on the back surface of the printed matter. The numerical values in parentheses represent the normal boiling point. These alkyl polyols may be used alone or in combination of two or more.

  The boiling point of the glycol ether is preferably 175 to 300 ° C., more preferably 200 to 285 ° C., and still more preferably 225 to 275 ° C. When the boiling point of the glycol ether is in the above range, the difference in the coloring properties of the front and back in the printed matter tends to be further suppressed.

  The content of the glycol ether is preferably 1.0 to 15% by mass, more preferably 1.5 to 10% by mass, and still more preferably 2.5 to 5% with respect to 100% by mass of the penetrant. It is 0 mass%. When the content of the glycol ether is 1.0% by mass or more, the continuous discharge stability tends to further improve when the penetrant is discharged by the ink jet nozzle.

(Other ingredients)
The penetrant may further have a surfactant, ureas, saccharides, pH adjusters, chelating agents, preservatives, rust inhibitors, and other components. The other components are not particularly limited, and examples thereof include the same as those exemplified for the ink composition.

(viscosity)
The viscosity of the permeation liquid at 25 ° C. is preferably 2 to 10 mPa · s, more preferably 3 to 5 mPa · s, and still more preferably 3.5 to 4.5 mPa · s. The viscosity of the ink composition can be determined by measurement in accordance with JIS Z8809 using a vibration viscometer.

[Heating process]
The ink jet printing method of the present embodiment may further include a heating step of heating the fabric after the recording step and the penetrant application step. By having the heating step, it is possible to better dye the dye on the fibers constituting the fabric. Although it does not specifically limit as a heating method, For example, HT method (high temperature steaming method), HP method (high pressure steaming method), thermosol method is mentioned.

  Further, in the heating step, the ink composition adhering surface on the fabric may or may not be subjected to pressure treatment. As a heating method which does not pressure-process the ink composition adhesion side on a textile, oven drying (a method which does not press press, such as a conveyor oven and a batch oven) is mentioned. By having such a heating process, recorded matter productivity is further improved. Further, the heating method for applying pressure treatment to the ink composition adhesion surface on the fabric is not particularly limited, and examples thereof include heat press and wet on dry. "Pressing" refers to applying pressure to the recording medium by bringing the individual into contact.

  The temperature at the time of heat treatment is preferably 80 to 150 ° C., more preferably 90 to 110 ° C. When the temperature at the time of the heat treatment is in the above-mentioned range, it tends to be possible to better dye the dye on the fibers constituting the fabric.

[Washing process]
The inkjet textile printing method of this embodiment may further have a washing step of washing the fabric after the heating step. The washing step can effectively remove the dye not dyed to the fiber. The washing step can be performed using, for example, water, and may be subjected to a soaping treatment as necessary. The soaping method is not particularly limited, but for example, a method of washing off the unfixed pigment with a hot soap solution or the like can be mentioned.

[Ink set]
The ink set of the present embodiment includes an ink composition containing a dye and a penetrant, and the penetrant is a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C. And substantially free of an alkyl polyol having a boiling point of more than 260 ° C.

  The same ink composition and penetrant as those described above can be used for the ink set.

  Hereinafter, the present invention will be more specifically described using examples and comparative examples. The present invention is not limited at all by the following examples.

[Material for Ink Composition]
The main materials used in the following examples and comparative examples are as follows.
〔dye〕
C. I. Reactive Black 39
[Glycol ether]
Diethylene glycol monobutyl ether (standard boiling point 230 ° C)
Triethylene glycol monobutyl ether (standard boiling point 272 ° C)
[Alkyl polyol]
1,2-propanediol (standard boiling point 188 ° C)
Diethylene glycol (standard boiling point 245 ° C)
Triethylene glycol (standard boiling point 287 ° C)
Glycerin (standard boiling point 290 ° C)
[Nitrogen-containing compound]
N-ethyl-2-pyrrolidone (standard boiling point 212 ° C)
2-Pyrrolidone (standard boiling point 245 ° C)
[Surfactant]
Olfin PD-002W (Acetylene surfactant, manufactured by Nisshin Chemical Industry Co., Ltd.)
[Moisturizers]
Urea (pH adjuster)
Trishydroxymethylaminomethane (preservative)
Proxel XL2 (brand name, made by Ronza Japan)

Preparation of Ink Compositions 1 and 2
The respective materials were mixed according to the composition shown in Table 1 below, and sufficiently stirred to obtain ink compositions I-1 and I-2. Specifically, each material was mixed uniformly, and filtered with a membrane filter (pore diameter: 1 μm) to prepare ink compositions I-1 and I-2. In Table 1 below, the unit of numerical values is mass%, and the total is 100.0 mass%.

[Preparation of osmotic solution]
Each material was mixed by the composition shown in the following Table 2, and it fully stirred, and obtained each penetration liquid. Specifically, each permeation solution was prepared by uniformly mixing each material and filtering with a membrane filter (pore diameter: 1 μm). In Table 2 below, the unit of numerical values is mass%, and the total is 100.0 mass%.

[Surface color development evaluation and surface back color development difference evaluation]
The ink composition I-1 obtained as described above was filled in a yellow cartridge of an ink jet printer PX-G 930 (manufactured by Seiko Epson Corporation), and a penetrant was filled in a cyan cartridge. By setting Fabric 1 (100% cotton; basis weight 130 g / m ² ) in a printer and printing a solid pattern of green 200% duty (yellow data 100% duty + cyan data 100% duty), the ink composition I- 1 and the penetrant were adhered to the surface of the fabric 1. The image resolution is 1440 × 720 dpi.

  After steaming at 102 ° C. for 10 minutes on the fabric 1 having the ink composition I-1 and the penetrant attached to the surface, 0.2 mass of Laccole STA (surfactant, manufactured by Meisei Chemical Co., Ltd.) The sample was washed with an aqueous solution containing 10% at 90 ° C. for 10 minutes and dried to give sample 1.

Next, ink composition I-2 is filled into a yellow cartridge instead of ink composition I-1, fabric 2 (100% silk; 60 g / m ² basis weight) is set in a printer, and the green 200% duty By printing a solid pattern (yellow data 100% duty + cyan data 100% duty), the ink composition I-2 and the permeation liquid were adhered to the surface of the fabric 2. The image resolution is 1440 × 720 dpi.

  After steaming at 100 ° C. for 30 minutes for the fabric 2 on the surface of which the ink composition I-2 and the penetrant are adhered, 0.2 mass of Laccoll STA (surfactant, manufactured by Meisei Chemical Co., Ltd.) The resultant was washed at 55 ° C. for 10 minutes using an aqueous solution containing 5%, and the dried sample was used as evaluation sample 2.

  The OD values (coloring densities) of the front and back surfaces of the obtained evaluation sample were measured using a colorimeter (trade name "Gretag Macbeth Spectrolino", manufactured by X-RITE), and the following evaluation was made based on the measured OD values. The color developability of the surface and the color developability difference of the surface to the back were evaluated based on the criteria.

[Coloring on the surface]
(Evaluation criteria)
A: OD value of surface is 1.4 or more B: OD value of surface is 1.3 or more and less than 1.4 C: OD value of surface is 1.2 or more and less than 1.3 D: OD value of surface is 1. Less than 2

[OD value difference between front and back sides]
(Evaluation criteria)
A: OD difference between front and back is less than 0.1 B: OD difference between front and back is 0.1 or more and less than 0.2 C: OD difference between front and back is 0.2 or more and less than 0.3 D: OD difference between front and back is 0.3 or more

Claims (6)

It has a recording step of depositing an ink composition containing a dye on the surface of the fabric by an inkjet method, and a penetrant deposition step of depositing a penetrant on the surface or back surface of the fabric before or after the recording step. ,
The permeation solution comprises a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C.
Ink jet printing method.   The inkjet textile-printing method of Claim 1 whose content of the said nitrogen-containing compound is 5.0-10 mass% with respect to 100 mass% of said penetrants.   The inkjet textile printing method of Claim 1 or 2 whose content of the said alkyl polyol is 20-40 mass% with respect to 100 mass% of said permeation liquids.   The inkjet textile printing method of any one of Claims 1-3 in which the said permeation liquid further contains glycol ether.   The ink composition contains a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C. The inkjet textile printing method of any one of Claims 1-4. An ink composition containing a dye, and a penetrant,
The permeation solution comprises a nitrogen-containing compound having a boiling point of 230 to 260 ° C. and an alkyl polyol having a boiling point of 230 to 260 ° C., and is substantially free of an alkyl polyol having a boiling point of more than 260 ° C.
Ink set.