JP2017132946A - Inkjet ink set for textile printing and inkjet textile printing recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inkjet ink set for textile printing and an inkjet textile printing recording method, by which adhesiveness of an ink can be increased in a recording method using a pretreatment solution to improve picture quality.SOLUTION: One embodiment of the present invention provides an inkjet ink set for textile printing to be used for such an inkjet textile printing recording method that includes: a step of imparting a pretreatment solution comprising water and a reactant that aggregates a component of a colored ink composition to a fabric; and a step of imparting the colored ink composition and a clear ink composition both in a wet state to the fabric imparted with the pretreatment solution so as to form an image. The ink set includes: a colored ink composition comprising a resin having aggregation property with the reactant; and a clear ink composition comprising a resin having no aggregation property with the reactant.SELECTED DRAWING: None

Description

  The present invention relates to a textile inkjet ink set and an inkjet textile recording method.

  2. Description of the Related Art Conventionally, a so-called ink jet recording method for recording an image or the like with minute ink droplets ejected from an ink jet recording head is widely known. 2. Description of the Related Art Conventionally, a recording method is known in which a pretreatment liquid is applied as a pretreatment to a fabric, color ink is ink jet recorded on the pretreated fabric, dried, and then a middle coat or an overcoat is applied (for example, a patent) Reference 1).

JP 2010-150454 A

  Conventionally, in order to improve ink color development and bleed suppression (image quality improvement), a pretreatment is used in which a pretreatment liquid that reacts with ink (pretreatment liquid) is processed onto a fabric before the ink is deposited. When the pretreatment liquid is used, the color of the colored ink and the image quality are improved. On the other hand, since the colored ink components are solidified (coated) before the recording medium penetrates into the recording medium, the adhesion of the ink is reduced. There was a tendency to be inferior. There is a method of increasing the adhesion by increasing the content of the fixing resin in the ink, but in this case, the ink viscosity becomes high, and nozzle clogging and ink storage stability are reduced.

  One aspect of the present invention is a printing inkjet ink set that can prevent nozzle clogging and a decrease in storage stability of an ink accompanying an increase in viscosity of an ink composition, and can improve image adhesion and color development. An ink jet textile recording method is provided.

  The present inventors diligently studied to solve the above problems. As a result, the present inventors have found that the above problems can be solved by forming the image by applying the colored ink composition and the clear ink composition to each other in a wet state on the fabric to which the treatment liquid is applied. .

  In order to solve the above-described problems, an embodiment of the present invention includes a step of applying a pretreatment liquid containing a reactive agent that aggregates the components of the colored ink composition and water to the fabric, and a fabric provided with the pretreatment liquid. A printing ink-jet ink set for use in an ink-jet printing recording method, comprising: a step of applying a colored ink composition and a clear ink composition to each other in a wet state; And a clear ink composition containing a resin that does not have cohesiveness due to the reactive agent.

  According to the above configuration, the colored ink composition containing a resin having a cohesive property due to a reactive agent and the clear ink composition containing a resin not having a cohesive property due to a reactive agent are wetted with each other on a cloth provided with a pretreatment liquid. Adhesion can be improved by applying with. It is presumed that the resin of the clear ink composition is a resin that does not have cohesiveness due to the reactive agent, so that the aggregation of the resin in the colored ink composition at an early stage before penetrating into the fabric can be alleviated. . In addition, since the resin content in the colored ink composition can be reduced by adding a resin to the clear ink composition, the viscosity of the ink composition is not increased.

  Preferably, the clear ink composition and the colored ink composition have a viscosity of 4.0 to 7.0 mPa · sec. Thereby, clogging of the ink composition is prevented.

  Preferably, the average resin amount of the clear ink composition and the colored ink composition is 12 to 16% by mass. Thereby, clogging of the ink composition is prevented, and adhesion can be improved. When the average resin amount of the clear ink composition and the colored ink composition exceeds 16%, clogging is worsened, and when the average resin amount is less than 12%, the adhesion tends to decrease.

  For example, the colored ink composition is either a white ink composition containing a white color material or a non-white ink composition containing a non-white color material.

  Preferably, the resin contained in the clear ink composition is at least one of a urethane resin and an acrylic resin.

  Preferably, the colored ink composition and the clear ink composition each have a solid content / humectant amount of 2.3 or less. Thereby, clogging of the nozzle due to drying of the solid content of the colored ink composition can be prevented.

  One embodiment of the present invention includes a step of applying a pretreatment liquid containing a reactant that aggregates the components of the color ink composition and water to the fabric, and the color ink composition applied to the fabric provided with the pretreatment liquid. And forming the image by applying the product and the clear ink composition to each other in a wet state, and the colored ink composition contains a resin having a cohesiveness by the reactant, and the clear ink composition The inkjet printing recording method, wherein the product contains a resin that does not have cohesiveness due to the reactant.

  According to the above configuration, the colored ink composition containing a resin having a cohesive property due to a reactive agent and the clear ink composition containing a resin not having a cohesive property due to a reactive agent are wetted with each other on a cloth provided with a pretreatment liquid. Adhesion can be improved by applying with. It is presumed that the resin of the clear ink composition is a resin that does not have cohesiveness due to the reactive agent, so that the aggregation of the resin in the colored ink composition at an early stage before penetrating into the fabric can be alleviated. . In addition, since the resin content in the colored ink composition can be reduced by adding a resin to the clear ink composition, the viscosity of the ink composition is not increased.

  Preferably, the coating amount ratio of the adhesion region of the fabric to which the clear ink composition and the colored ink composition are adhered is clear ink composition / colored ink composition = 0.3 to 1.0. As a result, an image having excellent color development and adhesion is recorded. If the clear ink composition / colored ink composition is less than 0.3, the adhesion tends to be lowered, and if it exceeds 1.0, the color developability tends to be lowered.

Preferably, the adhesion amount of the colored ink composition in the adhesion region of the fabric to which the clear ink composition and the colored ink composition are adhered is 50 to 300 mg / inch ² . Thereby, the color development of an image can be improved.

The block diagram which shows an example of a structure of the recording device which can be used for this embodiment is shown.

  Hereinafter, embodiments for carrying out the present invention will be described in detail. In addition, this invention is not restrict | limited to the following embodiment, A various deformation | transformation can be implemented within the range of the summary.

  A textile printing inkjet ink set according to an embodiment of the present invention includes a step of applying a pretreatment liquid containing a reactive agent that aggregates components of a colored ink composition and water to a fabric, and a fabric provided with the pretreatment liquid. A printing ink-jet ink set for use in an ink-jet printing recording method comprising: a step of applying a colored ink composition and a clear ink composition to each other in a wet state to form an image; And a clear ink composition containing a resin that does not have cohesiveness due to the reactant.

1. Recording medium In this embodiment, a fabric is used as the recording medium. Examples of the fabric include, but are not limited to, woven fabrics, knitted fabrics, nonwoven fabrics, and the like using natural fibers such as silk, cotton, and wool, and synthetic fibers such as nylon, polyester, polypropylene, and rayon.

2. Pretreatment liquid The recording method according to an embodiment of the present invention uses a pretreatment liquid (reaction liquid). The pretreatment liquid contains a reactive agent (aggregating agent) that aggregates or thickens the components of the ink composition.

  The reactive agent has a function of aggregating the coloring material together with the resin contained in the colored ink composition by reacting with any of the components contained in the colored ink composition, preferably any of the coloring material and the resin. Thereby, the color developability of the image made of the colored ink composition is improved, and the fabric can be well concealed.

  As the reactant, any of a polyvalent metal salt, an organic acid, and a cationic compound is preferable, any of the previous two is more preferable, and the previous one is more preferable. The content of the reactant contained in the pretreatment liquid is preferably 1 to 20% by mass. The lower limit of the content of the reactant is more preferably 2% by mass or more, more preferably 3% by mass or more, and further preferably 5% by mass or more. The upper limit of the content of the reactant is more preferably 15% by mass or less, and further preferably 10% by mass or less.

The polyvalent metal compound is a compound composed of a divalent or higher polyvalent metal ion and an anion. Examples of the divalent or higher polyvalent metal ions include Ca ²⁺ , Mg ²⁺ , Cu ²⁺ , Ni ²⁺ , Zn ²⁺ and Ba ²⁺ . Examples of the anion include Cl ⁻ , NO ₃ ⁻ , CH ₃ COO ⁻ , I ⁻ , Br ⁻ , ClO ₃ ^{− and the} like. Among these, magnesium salt, calcium salt, and aluminum salt can be preferably used from the viewpoint that the above-described aggregation effect is further enhanced.

  Examples of the organic acid include, but are not limited to, acetic acid, propionic acid, and lactic acid.

  Cationic compounds include, but are not limited to, cationic polymers that are soluble in water and positively charged in water, such as polyallylamine and quaternary salts of polyallylamine.

  The pretreatment liquid may contain a resin. The resin is not particularly limited, and for example, a known resin such as an acrylic resin, a styrene acrylic resin, a fluorene resin, a urethane resin, a polyolefin resin, or an ethylene vinyl acetate resin can be used.

  The pretreatment liquid contains components such as surfactants, pastes (eg starch substances, cellulosic substances, polysaccharides, proteins, water-soluble polymers, etc.), water, pH adjusters, preservatives and fungicides. May be.

3. Ink Set An ink set according to an embodiment of the present invention includes a colored ink composition containing a resin that has cohesiveness due to a reactive agent and a clear ink composition that contains a resin that does not have cohesiveness due to a reactive agent. The ink set according to the present embodiment may further include the pretreatment liquid described above.

  Hereinafter, each ink will be described in detail.

3.1. Colored ink composition The colored ink composition according to the present embodiment includes a coloring material and a resin having a cohesiveness caused by a reactant contained in the pretreatment liquid. Hereinafter, components contained in the colored ink composition will be described in detail.

3.1.1. Colorant Dye or pigment is used as the colorant contained in the colored ink composition, but it is preferable to use a pigment in terms of color development and aggregation and thickening by the pretreatment liquid. As the pigment, both organic pigments and inorganic pigments can be used. There is no limitation on the color material contained in the colored ink composition, and any color material of a white color material or a non-white color material (yellow, cyan, magenta, black, etc.) can be used.

  As described above, any color material may be used for the colored ink composition. However, since the problem of adhesion to the fabric appears remarkably in the white ink, the colored ink composition has a white color. By using this color material, the effects of the present invention can be enjoyed more.

  Examples of the white color material include, but are not limited to, white inorganic pigments such as titanium oxide, zinc oxide, zinc sulfide, antimony oxide, and zirconium oxide. In addition to the white inorganic pigment, white organic pigments such as white hollow resin particles and polymer particles can also be used. A white dye can also be used.

  The color index (CI) of the white pigment is not limited to the following, but for example, C.I. I. Pigment White 1 (basic lead carbonate), 4 (zinc oxide), 5 (mixture of zinc sulfide and barium sulfate), 6 (titanium oxide), 6: 1 (titanium oxide containing other metal oxides), 7 (Zinc sulfide), 18 (calcium carbonate), 19 (clay), 20 (titanium mica), 21 (barium sulfate), 22 (natural barium sulfate), 23 (gloss white), 24 (alumina white), 25 (gypsum) ), 26 (magnesium oxide / silicon oxide), 27 (silica), 28 (anhydrous calcium silicate), and the like. Among these, titanium oxide is preferable because it is excellent in color developability, concealability, and visibility (brightness), and a good dispersed particle diameter can be obtained.

  Among the titanium oxides, rutile type titanium oxide, which is a general white pigment, is preferable. This rutile type titanium oxide may be produced by itself or may be commercially available. As an industrial production method for producing rutile-type titanium oxide (in powder form) by itself, conventionally known sulfuric acid method and chlorine method can be mentioned. Examples of commercially available rutile titanium oxide include Tipaque (registered trademark) CR-60-2, CR-67, R-980, R-780, R-850, R-980, R-630, R- 670, PF-736, etc. (above, manufactured by Ishihara Sangyo Co., Ltd., trade name).

  The pigment other than the white pigment means a pigment excluding the above-mentioned white pigment. Examples of pigments other than white pigments include, but are not limited to, organic pigments such as azo, phthalocyanine, dye, condensed polycyclic, nitro, and nitroso (brilliant carmine 6B, lake red C). , Watching Red, Disazo Yellow, Hansa Yellow, Phthalocyanine Blue, Phthalocyanine Green, Alkali Blue, Aniline Black, etc.), Cobalt, Iron, Chromium, Copper, Zinc, Lead, Titanium, Vanadium, Manganese, Nickel and other metals, metals Use oxides and sulfides, carbon blacks such as furnace carbon black, lamp black, acetylene black, and channel black (CI pigment black 7), and inorganic pigments such as ocher, ultramarine, and bitumen. Can do.

  More specifically, as carbon black that can be used as a black pigment, for example, MCF88, No. 2300, 2200B, 900, 33, 40, 45, 52, MA7, 8, 100, etc. (above, trade name, manufactured by Mitsubishi Chemical Corporation), Raven 5750, 5250, 5000, 3500, 1255, 700, etc. (above, Columbia Carbon (Trade name), Regal 1 400R, 330R, 660R, Mogu L, Monarch 700, 800, 880, 900, 1000, 1100, 1300, 1400, etc. (above, product names made by Cabot), Color Black FW1, FW2 , FW2V, FW18, FW200, S150, S160, S170, Printex 35, U, V, 140U, Special Black 6, 5, 4A, 4 etc. (above, Degussa's product name).

  Examples of yellow pigments include C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 16, 17, 24, 34, 35, 37, 53, 55, 65, 73, 74, 75, 81, 83, 93, 94, 95, 97, 98, 99, 108, 109, 110, 113, 114, 117, 120, 124, 128, 129, 133, 138, 139, 147, 151, 153, 154, 167, 172, 180 and the like.

  Examples of magenta pigments include C.I. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 22, 23, 30, 31, 32, 37, 38, 40, 41, 42, 48 (Ca), 48 (Mn), 57 (Ca), 57: 1, 88, 112, 114, 122, 123, 144, 146, 149, 150, 166, 168 170, 171, 175, 176, 177, 178, 179, 184, 185, 187, 202, 209, 219, 224, 245, C.I. I. Pigment violet 19, 23, 32, 33, 36, 38, 43, 50 and the like.

  Examples of cyan pigments include C.I. I. Pigment blue 1, 2, 3, 15, 15: 1, 15: 2, 15: 3, 15:34, 15: 4, 16, 18, 22, 25, 60, 65, 66, and the like.

  Examples of pigments other than magenta, cyan, and yellow include C.I. I. Pigment green 7, 10, C.I. I. Pigment brown 3, 5, 25, 26, C.I. I. Pigment orange 1, 2, 5, 7, 13, 14, 15, 16, 24, 34, 36, 38, 40, 43, 63 and the like.

  The pigments described above may be used alone or in combination of two or more.

  Although the content of the pigment contained in the colored ink composition varies depending on the pigment type used, it ensures good color developability, and so on, so that it is 1% by mass to 30% by mass with respect to the total mass of the colored ink composition. Preferably, it is 5 mass% or more and 15 mass% or less, More preferably, it is 5 mass% or more and 12 mass% or less. In particular, when titanium oxide is used as the pigment contained in the colored ink composition, the titanium oxide content is difficult to settle, and is excellent in concealability and color reproducibility (especially on fabrics with low lightness). The total weight of the colored ink composition is preferably 3% by mass or more and 25% by mass or less, and more preferably 5% by mass or more and 20% by mass or less.

  The pigment may be a surface-treated pigment or a pigment using a dispersant or the like from the viewpoint of enhancing dispersibility in the ink.

  The surface-treated pigment can be dispersed in an aqueous solvent by directly or indirectly bonding a hydrophilic group (carboxyl group, sulfonic acid group, etc.) to the pigment surface by physical treatment or chemical treatment. (Hereinafter also referred to as “self-dispersing pigment”).

  The pigment using a dispersant is a pigment dispersed with a surfactant or a resin (hereinafter, also referred to as “polymer dispersed pigment”), and any known surfactant or resin is known. It is possible to use substances. In addition, the “polymer dispersed pigment” includes a pigment coated with a resin. The pigment coated with the resin can be obtained by an acid precipitation method, a phase inversion emulsification method, a miniemulsion polymerization method, or the like.

3.1.2. Resin The resin contained in the colored ink composition is contained in the form of polymer fine particles (emulsion) from the viewpoint of improving the abrasion resistance and adhesion of the film and the storage stability of the colored ink composition. In the present embodiment, the resin constituting the polymer fine particles contains a resin having a cohesiveness caused by the reactant contained in the pretreatment liquid, so that the resin aggregates together with the colorant and improves the color developability of the colored ink composition. it can.

  Examples of the resin include acrylic resins, styrene acrylic resins, fluorene resins, urethane resins, polyolefin resins, rosin modified resins, terpene resins, polyester resins, polyamide resins, epoxy resins, vinyl chloride resins. Resin, vinyl chloride-vinyl acetate copolymer, ethylene vinyl acetate resin and the like can be used. These resins may be used alone or in combination of two or more. Among these, it is preferable to use at least one selected from a urethane-based resin and an acrylic-based resin because the degree of freedom in design is high and therefore desired film physical properties (the above-described film elongation) are easily obtained.

  As the urethane resin, those having a urethane skeleton and water dispersibility are used. In the present embodiment, in particular, a urethane-based resin having a cohesiveness due to the reactant contained in the pretreatment liquid is used as the urethane-based resin. Such a urethane resin is, for example, an anionic urethane resin having an anionic functional group such as a carboxy group, a sulfo group, or a hydroxy group. As such an anionic acrylic resin, commercially available products may be used. For example, Sancure 2710, 2715 (trade name manufactured by The Lubrizol Corporation), Permarin UA-150 (Sanyo Chemical Industries). (Trade name, manufactured by Sanyo Chemical Industries, Ltd.), Superflex 460, 460s, 840 manufactured by Daiichi Kogyo Seiyaku Co., Ltd .; Takelac WS-6021, W-512-A manufactured by Mitsui Chemical Polyurethanes Co., Ltd. -6 etc. are mentioned.

  As the acrylic resin, polymers of acrylic monomers such as acrylic acid and acrylate esters, copolymers of acrylic monomers with other monomers, and the like can be used. Examples of the monomer include vinyl monomers such as styrene. In the present embodiment, in particular, the acrylic resin is preferably an acrylic resin having a functional group such as a carboxy group from the viewpoint of cohesiveness due to the reactant contained in the pretreatment liquid. As such an acrylic resin, commercially available products may be used, and examples thereof include Nippon SX Nippon SX-1706 and Shin Nakamura Chemical MK-100W.

  The determination of whether the resin has a cohesiveness due to the reactive agent or not is made by dropping a liquid containing the resin into the pretreatment liquid used in the ink jet printing recording method. A resin that solidifies when dripped and separates from the liquid and floats on the water surface or sinks to the bottom is defined as a resin that aggregates by mixing with the pretreatment liquid. In addition, when the resin fine particles are dropped, the pretreatment liquid does not solidify even when the resin comes into contact with the resin. The resin does not aggregate. At this time, the evaluation is made after one minute of rest. The resin used is a 10% by mass aqueous medium liquid (such as an aqueous dispersion or aqueous solution) as a solid content.

  Examples of the resin having cohesiveness due to the reactive agent include self-dispersing resin fine particles, and examples of the resin having no cohesiveness due to the reactive agent include emulsifier-dispersed resin fine particles. Alternatively, examples of the resin having a cohesive property by the reactive agent include a resin having an acid value of 10 mgKOH / g or more by a potentiometric measurement method based on JIS-K2501, and the resin having no cohesive property by the reactive agent is the above acid. Examples thereof include resins having a value of less than 10 mg KOH / g. Alternatively, for example, an anionic resin liquid can be given as a resin having coagulability by a reactive agent, and a nonionic or cationic resin liquid can be given as a resin having no cohesiveness by a reactive agent.

  The content of the resin in the colored ink composition is preferably 1% by mass or more and 25% by mass or less, preferably 5% by mass or more and 20% by mass or less in terms of solid content with respect to the total mass of the ink. Is more preferable, and it is further more preferable that they are 10 mass% or more and 12 mass% or less. Since the resin content in the ink is within the above-mentioned range, particularly not lower than the lower limit, the resin can sufficiently exhibit the effect of improving the fixing property of the ink, and thus the rub resistance of the recorded image is improved. . Moreover, since it does not exceed the upper limit, the generation of aggregates due to the resin can be suppressed, so that the storage stability and ejection stability of the ink are excellent.

3.1.3. Other Components The colored ink composition may contain water, an organic solvent, and a surfactant.

<Water>
Water is a main medium of ink and is a component that evaporates and scatters when dried. Examples of water include water from which ionic impurities have been removed as much as possible, such as pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, and distilled water, and ultrapure water. Further, when water sterilized by ultraviolet irradiation or addition of hydrogen peroxide is used, generation of mold and bacteria can be prevented when the ink is stored for a long time. The content of water contained in the colored ink composition is not particularly limited, but may be, for example, 50% by mass or more, further 50% by mass with respect to the total mass of the colored ink composition. It can be 95 mass% or less.

<Water-soluble organic solvent>
The pretreatment liquid may contain a water-soluble organic solvent. By including the water-soluble organic solvent, the remaining amount of the pretreatment liquid in the portion where the pretreatment liquid is adhered tends to be further reduced. The water-soluble organic solvent is not particularly limited. For example, glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-propanediol, 1,2-butanediol, 1,2- Pentanediol, 1,2-hexanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, diethylene glycol mono-n-propyl ether, ethylene glycol mono-iso-propyl ether, diethylene glycol mono -Iso-propyl ether, ethylene glycol mono-n-butyl ether, ethylene glycol mono-t-butyl ether, diethylene glycol mono-n-butyl ether, triethylene glycol monobutyl Ether, diethylene glycol mono-t-butyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono-t-butyl ether, propylene glycol mono-n-propyl ether, propylene glycol mono-iso-propyl ether, propylene glycol mono- n-butyl ether, dipropylene glycol mono-n-butyl ether, dipropylene glycol mono-n-propyl ether, dipropylene glycol mono-iso-propyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, diethylene glycol ethyl methyl ether, diethylene glycol Butyl Chill ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, dipropylene glycol diethyl ether, tripropylene glycol dimethyl ether, methanol, ethanol, n-propyl alcohol, iso-propyl alcohol, n-butanol, 2-butanol, alcohols or glycols such as tert-butanol, iso-butanol, n-pentanol, 2-pentanol, 3-pentanol, and tert-pentanol; N, N-dimethylformamide, N, N-dimethylacetamide, 2-pyrrolidone, N-methyl-2-pyrrolidone, 2-oxazolidone, 1,3-dimethyl-2-imidazolidinone, dimethyl sulfoxide , Sulfolane, and 1,1,3,3-tetramethylurea. Of these, water-soluble organic solvents such as 1,2-hexanediol and propylene glycol are preferable.

  The content of the water-soluble organic solvent is preferably 7.5 to 22.5% by mass, more preferably 10 to 20% by mass, and further preferably 12.5% with respect to the total amount of the colored ink composition. ˜17.5% by mass.

  Some of the water-soluble organic solvents described above function as a humectant from the viewpoint of improving ejection stability from the nozzle.

  In the present specification, the humectant is either a polyol compound or a glycol compound in the organic solvent. For example, glycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,2,6-hexanetriol, and the like can be mentioned. Two or more kinds can be used.

  The content of the humectant is preferably 4 to 40% by mass, more preferably 6 to 20% by mass, and further preferably 8 to 11% by mass with respect to the total mass of the colored ink composition.

<Surfactant>
The surfactant has a function of reducing surface tension and improving wettability with a recording medium. Among the surfactants, for example, acetylene glycol surfactants, silicone surfactants, and fluorine surfactants can be preferably used.

  Although it does not specifically limit as acetylene glycol type surfactant, For example, Surfynol 104,104E, 104H, 104A, 104BC, 104DPM, 104PA, 104PG-50,104S, 420,440,465,485, SE, SE- F, 504, 61, DF37, CT111, CT121, CT131, CT136, TG, GA, DF110D (all are trade names, manufactured by Air Products and Chemicals. Inc.), Olphin B, Y, P, A, STG, SPC , E1004, E1010, PD-001, PD-002W, PD-003, PD-004, EXP. 4001, EXP. 4036, EXP. 4051, AF-103, AF-104, AK-02, SK-14, AE-3 (all trade names, manufactured by Nissin Chemical Industry Co., Ltd.), acetylenol E00, E00P, E40, E100 (all trade names, river Ken Fine Chemical Co., Ltd.).

  Although it does not specifically limit as a silicone type surfactant, A polysiloxane type compound is mentioned preferably. Although it does not specifically limit as the said polysiloxane type compound, For example, polyether modified organosiloxane is mentioned. Commercially available products of the polyether-modified organosiloxane include, for example, BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, BYK-348 (above trade names, manufactured by BYK). 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 (above trade names, manufactured by Shin-Etsu Chemical Co., Ltd.).

  As the fluorine-based surfactant, a fluorine-modified polymer is preferably used, and specific examples thereof include BYK-340 (manufactured by BYK Japan).

<Others>
Colored ink compositions include dissolution aids, viscosity modifiers, pH adjusters, antioxidants, antiseptics, antifungal agents, corrosion inhibitors, chelating agents for capturing metal ions that affect dispersion, etc. These various additives may be appropriately contained.

3.1.4. Others The viscosity of the colored ink composition at 20 ° C. is preferably 4.0 to 7.0 mPa · sec. Thereby, clogging of the ink composition is prevented.

  The solid content / humectant amount in the colored ink composition is preferably 2.3 or less. Thereby, clogging of the nozzle due to drying of the solid content of the colored ink composition can be prevented.

3.2. Clear Ink Composition The clear ink composition included in the ink set according to the present embodiment is an ink composition that includes a resin that does not have cohesiveness due to the reactant contained in the pretreatment liquid and does not include a color material. Hereinafter, the components contained in the clear ink composition will be described in detail.

3.2.1. Resin The resin contained in the clear ink composition is contained in the form of polymer fine particles (emulsion) from the viewpoint of improving the abrasion resistance and adhesion of the film, and the storage stability of the colored ink composition. In the present embodiment, the resin constituting the polymer fine particles contains a resin having a cohesiveness caused by the reactant contained in the pretreatment liquid, so that the resin aggregates together with the colorant and improves the color developability of the colored ink composition. it can.

  Examples of the resin include acrylic resins, styrene acrylic resins, fluorene resins, urethane resins, polyolefin resins, rosin modified resins, terpene resins, polyester resins, polyamide resins, epoxy resins, vinyl chloride resins. Resin, vinyl chloride-vinyl acetate copolymer, ethylene vinyl acetate resin and the like can be used. These resins may be used alone or in combination of two or more. Among these, it is preferable to use at least one selected from a urethane-based resin and an acrylic-based resin because the degree of freedom in design is high and therefore desired film physical properties (the above-described film elongation) are easily obtained.

  As the urethane resin, those having a urethane skeleton and water dispersibility are used. In the present embodiment, in particular, a urethane resin that does not have cohesiveness due to the reactant contained in the pretreatment liquid is used as the urethane resin. Such a urethane-based resin is, for example, a urethane-based resin that does not have an anionic functional group such as a carboxy group, a sulfo group, and a hydroxy group and is dispersed in water using an emulsifier. Commercial products may be used as such urethane resins, such as Takelac W-635 (trade name, manufactured by Mitsui Chemicals Polyurethane Co., Ltd.), Superflex 500M (trade name, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and the like. Can be mentioned.

  As the acrylic resin, polymers of acrylic monomers such as acrylic acid and acrylate esters, copolymers of acrylic monomers with other monomers, and the like can be used. Examples of the monomer include vinyl monomers such as styrene. In the present embodiment, in particular, an acrylic resin that does not have cohesiveness due to the reactant contained in the pretreatment liquid is used as the acrylic resin. Such an acrylic resin is, for example, an acrylic resin that does not have an anionic functional group such as a carboxy group, a sulfo group, and a hydroxy group and is dispersed in water using an emulsifier. As such an acrylic resin, a commercially available product may be used. For example, Movinyl 966A (trade name, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), Microgel E-1002, Microgel E-5002 (trade name, manufactured by Nippon Paint Co., Ltd), Boncourt 4001, Boncoat 5454 (trade name, manufactured by DIC), SAE1014 (trade name, manufactured by Zeon Corporation) ), Cybinol SK-200 (trade name, manufactured by SAIDEN CHEMICAL INDUSTRY CO., LTD.), Jongkrill 7100, Jongkrill 390, Jongkrill 711, Jongkrill 511, Jongkrill 7001, Jongkrill 632, John Krill 741, John Krill 450, John Krill 840, John Krill 62J, John Krill 74J, John Crill HRC-1645J, John Crill 734, John Crill 852, John Crill 7600, John Crill 775, John Crill 537J, John Crill 1535, John Crill PDX-7630A, John Crill 352J, John Crill 352D, John Crill PDX- 7145, Jonkrill 538J, Jonkrill 7640, Jonkrill 7641, Jonkrill 631, Jonkrill 790, Jonkrill 780, Jonkrill 7610 (above trade name, manufactured by BASF), Vinyblan 2650 (manufactured by Nisshin Chemical Industry), NK binder R-5HN (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd., solid content 44%) and the like.

  The content of the resin in the clear ink composition is preferably 1% by mass or more and 30% by mass or less, preferably 10% by mass or more and 25% by mass or less in terms of solid content with respect to the total mass of the ink. Is more preferable, and it is further more preferable that it is 14 mass% or more and 22 mass% or less. Since the resin content in the ink is within the above-mentioned range, particularly not lower than the lower limit, the resin can sufficiently exhibit the effect of improving the fixing property of the ink, and thus the rub resistance of the recorded image is improved. . Moreover, since it does not exceed the upper limit, the generation of aggregates due to the resin can be suppressed, so that the storage stability and ejection stability of the ink are excellent.

3.2.3. Other Components The clear ink composition can contain components such as water, a water-soluble organic solvent, a surfactant, a pH adjuster, an antiseptic and an antifungal agent. As these components, the components exemplified in the color ink composition can be used, and the content thereof can be set in the same range, and thus the description thereof is omitted.

3.2.4. Others The viscosity of the clear ink composition at 20 ° C. is preferably 4.0 to 7.0 mPa · sec. Thereby, clogging of the ink composition is prevented.

  The solid content / humectant amount in the clear ink composition is preferably 2.3 or less. Thereby, clogging of the nozzle due to drying of the solid content of the colored ink composition can be prevented.

3.3. Ink Set As described above, the ink set according to the present embodiment includes the above-described colored ink composition and clear ink composition. Hereinafter, the contents and characteristics of preferable components for the colored ink composition and the clear ink composition will be further described.

  The average resin amount of the clear ink composition and the colored ink composition is preferably 12 to 16% by mass. Thereby, clogging of the ink composition is prevented, and adhesion can be improved. When the average resin amount of the clear ink composition and the colored ink composition exceeds 16%, clogging is worsened, and when the average resin amount is less than 12%, the adhesion tends to decrease.

3.4. Preparation method Each ink (colored ink composition and clear ink composition) included in the ink set according to the present embodiment is mixed with the above-described components in an arbitrary order, and filtered to remove impurities as necessary. Can be obtained. As a method for mixing the components, a method in which materials are sequentially added to a container equipped with a stirring device such as a mechanical stirrer or a magnetic stirrer and stirred and mixed is suitably used. As a filtration method, centrifugal filtration, filter filtration, or the like can be performed as necessary.

4). Recording Method An inkjet textile printing recording method according to an embodiment of the present invention includes a step of applying to a fabric a pretreatment liquid containing a reactive agent that aggregates the components of the colored ink composition and water, and a pretreatment liquid. A step of applying a colored ink composition and a clear ink composition to each other in a wet state to form an image, and the colored ink composition contains a resin having a cohesiveness by a reactive agent, The ink composition includes a resin that does not have cohesiveness due to the reactant.

  In the ink jet recording method, each ink constituting the ink set is loaded into an ink jet recording apparatus for use. The ink jet recording apparatus is not particularly limited, and examples thereof include a drop-on-demand ink jet recording apparatus. In this drop-on-demand type ink jet recording apparatus, an apparatus adopting a piezoelectric element recording method for performing recording using a piezoelectric element disposed in a recording head, a heater for a heating resistance element disposed in the recording head, and the like There is an apparatus that employs a thermal jet recording method that performs recording using thermal energy generated by the above, and any recording method may be employed.

  Hereinafter, each step will be described in detail.

4.1. Pretreatment liquid attachment process The recording method according to the present embodiment includes a pretreatment liquid adhesion process. The pretreatment liquid adhering step is a step of adhering a pretreatment liquid containing a reactive agent that aggregates or thickens the components of the ink composition to the recording area of the fabric. Examples of the component contained in the ink that reacts with the reactant include the pigments and resins described above.

  The reactive agent has a function of aggregating the resin contained in the colored ink composition by reacting with the resin or other components contained in the colored ink composition. Thereby, the color developability of the image made of the colored ink composition is improved, and the fabric can be well concealed.

  Examples of the pretreatment liquid adhesion step include means for immersing the fabric in the pretreatment liquid, means for applying or spraying the pretreatment liquid, and the like. Further, when an ink set including a pretreatment liquid is used, the pretreatment liquid can be applied using an ink jet recording apparatus.

In the pretreatment liquid adhesion step, the adhesion amount of the pretreatment liquid to the recording area is preferably ² to 20 mg / inch ² . Adhesion amount of the lower limit, 5 mg / inch ² or more, and the upper limit of adhesion amount is more preferably 15 mg / inch ² or less, 10 mg / inch ² or less still more preferred. When the adhesion amount of the pretreatment liquid is 2 mg / inch ² or more, the occurrence of unevenness tends to be further suppressed. Moreover, when the adhesion amount of the pretreatment liquid is 20 mg / inch ² or less, a decrease in adhesion can be suppressed.

4.2. Ink adhesion process The ink adhesion process is a process in which an image is formed by applying a colored ink composition and a clear ink composition to each other in a wet state on a fabric to which a pretreatment liquid has been applied. An ink composition and a clear ink composition are deposited. The attaching step of the colored ink composition and the clear ink composition is preferably performed using an ink jet recording apparatus. In the present specification, “applying a colored ink composition and a clear ink composition to each other in a wet state” means that both inks are applied to the same region of the fabric in the same scanning, or the fabric is different in scanning. Are applied to the same region in order, but after the application of the previous ink is applied, the latter ink is applied in a state where 40% by mass or more of the volatile component of the previously applied ink remains on the fabric. The application of the subsequent ink is started within 30 seconds at 40 ° C. or lower.

  Adhering both inks so that the coating amount ratio of the adhering area of the fabric to which the clear ink composition and the colored ink composition are adhered becomes the clear ink composition / colored ink composition = 0.3 to 1.0. It is preferable to make it. As a result, an image having excellent color development and adhesion is recorded. If the clear ink composition / colored ink composition is less than 0.3, the adhesion tends to be lowered, and if it exceeds 1.0, the color developability tends to be lowered.

The adhesion amount of the colored ink composition in the adhesion region of the fabric to which the clear ink composition and the colored ink composition are adhered is preferably 50 to 300 mg / inch ² . Thereby, the color development of an image can be improved. The adhesion amount of the colored ink composition is obtained by dividing the total discharge amount (mg) of the colored ink composition used in the colored ink adhesion step by the area (inch ² ) of the base layer formed with the colored ink composition. It is done.

  In the present embodiment, after the pretreatment liquid is attached, the ink composition is attached on the pretreatment liquid by a so-called wet-on-wet method in which the ink composition is attached in a wet state without being dried. Specifically, it is preferable that the colored ink composition is attached in a state where the residual ratio of volatile components of the pretreatment liquid attached to the recording area is 40% by mass or more. The wet-on-wet method has an advantage that the printing time can be shortened as much as it is not dried. Generally, in the wet-on-wet method, since there is a lot of moisture, the aggregation of the ink components does not occur on the fabric fibers, and easily occurs away from the fibers in the moisture on the fabric. However, in this embodiment, it is possible to suppress a decrease in adhesion by applying a colored ink composition and a clear ink composition to each other in a wet state to form an image.

  The volatile component remaining rate of the pretreatment liquid is the volatile component remaining in the layer of the pretreatment liquid at the start of the colored ink adhering step with respect to the mass (mass A) of the volatile component contained in the pretreatment liquid used in the pretreatment step. The ratio of the remaining amount (mass B) is expressed as a percentage. The mass A is calculated by subtracting the mass of the pretreatment liquid after the pretreatment liquid is dried and the volatile components are completely volatilized from the total amount of the pretreatment liquid applied to the fabric. The mass B is calculated by subtracting the mass of the pretreatment liquid after the pretreatment liquid is dried and the volatile components are completely volatilized from the mass of the pretreatment liquid at the start of the colored ink attaching step.

  In order to keep the residual ratio of the volatile component in the pretreatment liquid within the above range, the pretreatment liquid is not provided between the pretreatment liquid adhesion step and the colored ink adhesion step without heating the fabric and drying the pretreatment liquid. It is preferable that the colored ink composition is adhered within 90 seconds from the adhesion of the ink.

4.3. Heating Step The inkjet textile printing method according to the present embodiment is performed after the clear ink attaching step, and may include a heating step of heating the fabric. In other words, the heating step is a step of drying the underlying layer formed on the fabric and the image thereon. Thereby, since the resin contained in each ink is sufficiently formed into a film, an image excellent in abrasion resistance can be obtained.

  Although it does not specifically limit as a heating method used for a heating process, For example, a heat press method, a normal pressure steam method, a high pressure steam method, and a thermofix method are mentioned. Moreover, as a heat source of heating, although not limited to the following, infrared (lamp) is mentioned, for example. Moreover, the temperature at the time of heat processing should just be able to fuse | melt the resin contained in each ink and to evaporate a water | moisture content, for example, can be about 150-200 degreeC.

  After the heating step, the printed material may be washed with water and dried. At this time, if necessary, a soaping process, that is, a process of washing off unfixed pigment with a hot soap solution or the like may be performed.

5. Recording Device FIG. 1 is a block diagram showing an example of the configuration of a recording device that can be used in this embodiment. A printer driver is installed in the computer 130, and print data corresponding to the image is output to the printer 1 in order to cause the printer 1 to record an image. The printer 1 corresponds to a “recording apparatus”. The printer 1 includes an ink supply unit 10, a transport unit 20, a head unit 30, a drying unit 40, a maintenance unit 50, a detector group 110, a memory 123, an interface 121, and a controller 120. The controller 120 includes a CPU 122 and a unit control circuit 124. The printer 1 that has received the print data from the computer 130, which is an external device, controls each unit by the controller 120, controls various recording conditions, and records an image on a recording medium according to the print data. The situation in the printer 1 is monitored by the detector group 110, and the detector group 110 outputs the detection result to the controller 120. The controller 120 controls each unit based on the detection result output from the detector group 110 and stores print data input via the interface 121 in the memory 123. The memory 123 also stores control information for controlling each unit. The drying unit 40 includes a heater, a blower, and the like, and dries a composition such as ink attached to a recording medium.

  The head unit 30 included in the recording apparatus (printer 1) includes a head (inkjet head) that performs recording by discharging a pretreatment liquid or an ink composition toward a recording medium. The head applies a discharge driving force to the ink provided for each cavity and a cavity for discharging the pretreatment liquid stored in the pretreatment liquid container or the ink composition stored in the ink container from the nozzle. It has an ejection drive unit, a nozzle that is provided for each cavity, and ejects the ink composition to the outside of the head, and a nozzle formation surface on which the nozzle is formed. A plurality of cavities, and ejection drive units and nozzles provided for each cavity may be provided in one head independently of each other. The ejection drive unit is formed using an electromechanical conversion element such as a piezoelectric element that changes the volume of the cavity by mechanical deformation, or an electrothermal conversion element that generates and discharges bubbles in ink by generating heat. be able to. The recording apparatus may be provided with one head or a plurality of heads for each color ink. When a plurality of heads are provided, the line heads are arranged by arranging a plurality of heads in the width direction of the recording medium. In this case, the above-mentioned recording width can be increased. When recording is performed using ink compositions of a plurality of colors, the recording apparatus includes a head for each ink. The head can be configured, for example, as shown in FIG. 3 of JP-A-2009-279830.

  When the recording apparatus is a line printer that is a line type recording apparatus, the head includes a line head having a length equal to or longer than the length of the recording medium. The ink composition is ejected from the line head toward the recording medium while the position of the line head and the recording medium is relatively changed in the scanning direction intersecting the width direction. In the line printer, the head is fixed without moving (almost), and recording is performed in one pass (single pass). A line printer is advantageous over a serial printer in that the recording speed is high.

  Here, in the above-mentioned “inkjet head having a nozzle row width longer than the recording width of the recording medium”, the width of the recording medium and the length (width) of the line head are completely the same. However, they may be different from each other. In such a case, for example, the length (width) of the line head is a length corresponding to the width (recorded width) of the recording medium on which the ink composition is to be ejected (image should be recorded). There are some cases.

  On the other hand, a serial printer, which is a serial type recording apparatus, performs main scanning (pass) in which the ink composition is ejected while the head moves in the main scanning direction intersecting the sub-scanning direction of the recording medium, and usually two passes. Recording is performed as described above (multipass).

6). Examples Hereinafter, the embodiments of the present invention will be described more specifically by way of examples. However, the present embodiments are not limited to these examples.

(Preparation of pretreatment liquid)
Each component was mixed according to Table 1 below to prepare a pretreatment liquid. Of the components shown in Table 1, polyvalent metal salts and organic acids correspond to the reactants in the present invention.

(Preparation of colored ink composition and clear ink composition)
Each component was mixed according to the following Table 1 to prepare a colored ink composition (white ink composition) and a clear ink composition.

  In “Solvent” in Table 2, glycerin and triethylene glycol correspond to humectants. The numerical values of the contents of “coloring material” and “resin fine particles” in Table 2 are the amount of the dispersion used, and the solid content is described in Table 3 to be described later. Table 2 also shows the pigment concentration and the solid content concentration of the resin fine particles in addition to the components and contents of the ink composition.

(Examples and Comparative Examples)
Tables 3 to 4 show the details of the configuration of the pretreatment liquid, the configuration of the ink set including the colored ink (white ink) and the clear ink, and the inkjet recording method used in Examples and Comparative Examples. .

(Judgment method of reactivity (cohesiveness) with pretreatment liquid)
In the columns of clear ink and white ink in Tables 3 to 4, the presence or absence of reactivity (cohesiveness) with the pretreatment liquid in the resin used for the ink is shown. The method for determining the reactivity (cohesiveness) with the pretreatment liquid is as follows. 15 cc of each pretreatment liquid (P1 or P2) for each example was placed in a 30 cc glass bottle, and each resin fine particle was dropped with a dropper from the top. When dripped, the resin fine particles coagulate and separate from the pretreatment liquid and float on the water surface or sink to the bottom of the bottle. did. In addition, when the resin fine particles are dropped with a dropper, the pretreatment liquid does not solidify even when it comes into contact with the resin. Resin fine particles (−) that were not aggregated by mixing were used. As the resin fine particles, a 10% by mass aqueous dispersion was used as the solid content.

(Storage stability)
Tables 3 to 4 show the storage stability test results of the white ink. The storage stability evaluation method is as follows. The viscosity change rate is determined by comparing the viscosity immediately after the ink composition table (Table 2) is prepared, filtered and deaerated, and the viscosity immediately after the heat treatment (70 ° C., 1 week). The storage stability was calculated according to the following evaluation criteria.
(Evaluation criteria)
○: Viscosity change rate is ± 5% or less Δ: Viscosity change rate is ± 10% or less ± 5% or more ×: Viscosity change rate is ± 10% or more

(viscosity)
Tables 3 to 4 show the viscosity measurement results of the clear ink and the white ink. The viscosity measurement was performed at 25 ° C. As a viscometer, SVM3000 manufactured by Anton Paar was used. The viscosity was evaluated according to the following evaluation criteria.
(Evaluation criteria)
◎: Less than 5 mPa · s ○: 5 mPa · s or more and 7 mPa · s or less ×: More than 7 mPa · s

(Clogging)
Tables 3 to 4 show the clogging test results of the clear ink and the white ink. The evaluation method of clogging property is as follows. After filling an ink jet printer (trade name PX-G930, manufactured by Seiko Epson Corporation) with an ink composition and confirming that all nozzles are ejected normally, the mixture is left in a 40 ° C./20% RH environment for the following time, 10 cc of the ink composition was discharged from the head. Thereafter, a discharge inspection was performed to check whether the ink composition was normally discharged from each nozzle.
(Evaluation criteria)
A: In the nozzle inspection after 1 month, all nozzles discharged normally.
○: In the nozzle inspection after 2 weeks, all the nozzles were ejected normally, but in the nozzle inspection after 1 month, some nozzles did not eject normally.
X: In the nozzle inspection after 2 weeks, some nozzles did not discharge normally.

(Inkjet textile printing method)
The ink jet textile recording method for producing the printed products of the examples and comparative examples is as follows. An Epson (SC-F2000) remodeling machine was prepared as an ink jet recording apparatus, and a clear ink and a colored ink were filled in the nozzle row. First, a pretreatment liquid was applied to the fabric with a roller. In Tables 3 to 4, those for which “Presence or absence of pretreatment liquid” was “None” were set in the printer immediately after application of the pretreatment liquid. In Tables 3 to 4, for those with “Presence or absence of drying of pretreatment liquid” being “Yes”, after applying the pretreatment liquid, drying by heating at 100 ° C. for 5 minutes with a heat press, Set in the printer. After setting in the printer, recording was performed using clear ink and colored ink from the nozzle row. After recording, the paper was discharged from the printer and dried by heat pressing at 100 ° C. for 5 minutes. The amount of white ink attached was 100 mg / inch ² . As shown in Tables 3 to 4, in Examples and Comparative Examples, “ink application amount ratio (clear / white)”, “printing order of white ink and clear ink”, and “drying timing after printing” in the inkjet textile printing method Is changing.

  The “print order of white ink and clear ink” shown in Tables 3 to 4 is classified by circle numbers 1 to 3. No. 1 is one in which white ink and clear ink are attached to the same location in the same scan (main scan) and then heated and dried. In No. 2, the cloth is returned after the previous ink has been attached, and after being attached to the same position and the subsequent ink attached, it is dried by heating. 3. After finishing the previous ink adhesion, the fabric was discharged from the printer, dried by heat press at 100 ° C. for 5 minutes, then set again on the printer, and the subsequent inks were stacked and adhered, and further dried by heating. Is.

  Using the pretreatment liquid, the ink set containing the color ink (white ink) and the clear ink shown in Tables 3 to 4, and the ink jet recording method, prints of examples and comparative examples were created, as shown below. Image adhesion and color development were evaluated.

(Adhesion evaluation method)
The printed surface of the printed material was subjected to a friction fastness test by rubbing 150 times with a load of 200 g using a tester (manufactured by Sangyo Co., Ltd., Gakushin type friction fastness tester AB-301S). The printed surface after the rub fastness test was checked at the dry (Dry) level in accordance with Japanese Industrial Standard (JIS) JIS L0849 for confirming the degree of ink peeling, and the adhesion was evaluated. The evaluation results are shown in Tables 3-4.
(Evaluation criteria)
○: Fastness to friction is grade 3 or better Δ: Fastness to friction is grade 2 ○: Fastness to friction is grade 1

(Evaluation method of color development)
The L * value of the printed material was measured with a color developing device (trade name “Gretag Macbeth spectroscopy”, manufactured by X-RITE Co.), and the color developability was evaluated based on the obtained L * value according to the following evaluation criteria. The evaluation results are shown in Tables 3-4.
(Evaluation criteria)
◎: L * value is 94 or more ○: L * value is 90 or more and less than 94 Δ: L * value is 85 or more and less than 90 ×: L * value is less than 85

As shown in Tables 3 to 4, in Examples 1 to 11 (Examples), compared to Examples 12 to 19 (Comparative Examples), from the viewpoint of storage stability of white ink, adhesion of images, and color development of images. Overall, good results were obtained.
Comparing Comparative Examples 17 and 18 with the present example, even if the components of the ink set are the same, by applying the colored ink composition and the clear ink composition to each other in a wet state to form an image, the adhesion of the image It can be seen that the performance can be improved.
Moreover, when Example 9 and another Example are contrasted, it turns out that adhesiveness can be improved when the average resin amount of a clear ink composition and a coloring ink composition is 12 mass% or more.
Further, comparing Example 10 with other examples, it can be seen that clogging of white ink can be prevented when the average resin amount of the clear ink composition and the colored ink composition is 16% by mass or less.
Furthermore, when Example 10 and other Examples are compared, it can be seen that clogging of the nozzle can be prevented if the solid content / humectant amount of the white ink and the clear ink is less than 3.0.

  DESCRIPTION OF SYMBOLS 1 ... Printer, 10 ... Ink supply unit, 20 ... Conveyance unit, 30 ... Head unit, 40 ... Irradiation unit, 50 ... Maintenance unit, 110 ... Detector group, 120 ... Controller, 121 ... Interface, 122 ... CPU, 123 ... Memory, 124 ... Unit control circuit, 130 ... Computer

Claims (9)

A step of applying a pretreatment liquid containing a reactive agent that aggregates the components of the colored ink composition and water to the fabric, and a wetness of the colored ink composition and the clear ink composition to the fabric provided with the pretreatment liquid. A printing inkjet ink set for use in an inkjet printing recording method comprising the steps of:
A colored ink composition containing a resin having a cohesiveness due to the reactive agent, and a clear ink composition containing a resin not having the cohesiveness due to the reactive agent,
Textile inkjet ink set. The clear ink composition and the colored ink composition have a viscosity of 4.0 to 7.0 mPa · sec.
The textile printing ink-jet ink set according to claim 1. The average resin amount of the clear ink composition and the colored ink composition is 12 to 16% by mass,
The textile printing inkjet ink set according to claim 1 or 2. The colored ink composition is either a white ink composition containing a white color material or a non-white ink composition containing a non-white color material.
The textile printing inkjet ink set according to any one of claims 1 to 3. The resin contained in the clear ink composition is at least one of urethane resin and acrylic resin,
The textile printing ink-jet ink set according to any one of claims 1 to 4. The colored ink composition and the clear ink composition each have a solid content / humectant amount of 2.3 or less.
The textile printing inkjet ink set according to any one of claims 1 to 5. A step of applying to the fabric a pretreatment liquid containing a reactive agent that aggregates the components of the colored ink composition and water; and the cloth to which the pretreatment liquid has been applied, the colored ink composition and the clear ink composition. And applying a wet state to form an image,
The colored ink composition includes a resin having a cohesiveness due to the reactive agent, and the clear ink composition includes a resin not having the cohesiveness due to the reactive agent,
Inkjet printing method. The coating amount ratio of the adhesion region of the fabric to which the clear ink composition and the colored ink composition are adhered is clear ink composition / colored ink composition = 0.3 to 1.0.
The ink jet textile recording method according to claim 7. The adhesion amount of the colored ink composition in the adhesion region of the fabric to which the clear ink composition and the colored ink composition are adhered is 50 to 300 mg / inch ² .
The ink-jet textile printing method according to claim 7 or 8.

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