Transfer recording method

Abstract

Provided is a transfer recording method capable of suppressing image bleeding and forming a high-quality image on a fabric without adjusting the evaporation ratio of an ink liquid component. The method includes: a first layer forming step of forming a first layer by discharging an image forming ink containing a colorant and water from an inkjet head to a transfer medium having a release layer; a second layer forming step of discharging an adhesive ink containing a thermoplastic resin and water from the inkjet head to form a second layer so as to overlap the first layer; and a heat transfer step for heat-transferring the first layer and the second layer to the fabric by heating the surface of the transfer medium on which the first layer and the second layer are formed in a state of facing the fabric, the softening point of the thermoplastic resin being equal to or less than the heating temperature of the fabric in the heat transfer step, and the softening point of the thermoplastic resin being equal to or less than the heating temperature of the fabric in the heat transfer step. The solid content of the thermoplastic resin is from 5% by mass to 25% by mass (inclusive) with respect to the total amount of the adhesive ink, the coating amount of the adhesive ink is 38 g / m2 or more, and the total of the coating amount of the image forming ink and the coating amount of the adhesive ink is 212 g / m2 or less.

Description

Technical Field

[0001] The present invention relates to a transfer recording method. Background Art

[0002] A transfer printing method is known in which an image is transferred to a fabric such as cloth by overlapping a transfer sheet as a transfer medium on which an image is formed and applying heat and pressure. In this method, an inkjet method is generally used because it is advantageous in forming a fine image with high on-demand flexibility when forming an image on the transfer sheet.

[0003] Among the transfer printing methods described above, a common method is to form an image on a transfer sheet having a release layer and a thermomelt layer formed on the entire surface of a substrate, and then transfer the transfer sheet to a cloth by heating and pressurizing.

[0004] Patent document 1 discloses a method for manufacturing a transfer medium, comprising: a coloring layer forming step, in which ink is ejected from an inkjet head to a substrate to form a coloring layer on the substrate; and an adhesive layer forming step, in which an adhesive liquid is ejected from an inkjet head to the coloring layer to form an adhesive layer on the coloring layer, and in the coloring layer forming step, white ink is attached in a manner covering the image surface of CMYK ink. The document states that when the ink is an aqueous image forming ink, when 65 to 95% by mass of the liquid component contained in the ink is evaporated, a pattern of the coloring layer is obtained with high resolution, and the transferability is also improved.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2012-126025 Summary of the invention

[0008] Technical problem to be solved by the invention

[0009] The technology of Patent Document 1 uses plastic or metal as the transfer material. However, research on transfer conditions that enable appropriate transfer when using cloth is not sufficient. In addition, since the amount of ink attached to a transfer pattern requiring high resolution generally varies from region to region, it is not easy to appropriately adjust the evaporation rate of the liquid component in all regions. Therefore, a method that enables high-quality recording without relying on the evaporation rate of the liquid component is required.

[0010] Technical solutions to solve problems

[0011] In one technical solution of the transfer recording method involved in the present invention,

[0012] The transfer recording method has:

[0013] a first layer forming step of ejecting an image forming ink from an inkjet head onto a transfer medium having a release layer to form a first layer;

[0014] a second layer forming step of ejecting adhesive ink from the inkjet head to form a second layer so as to overlap with the first layer; and

[0015] a thermal transfer step of thermally transferring the first layer and the second layer to the fabric by heating the surface of the transfer medium on which the first layer and the second layer are formed while the surface is facing the fabric,

[0016] The image forming ink contains a color material and water.

[0017] The adhesive ink comprises a thermoplastic resin and water,

[0018] The softening point of the thermoplastic resin is lower than the heating temperature of the fabric in the thermal transfer step.

[0019] The solid content of the thermoplastic resin is 5% by mass or more and 25% by mass or less relative to the total amount of the adhesive ink.

[0020] The coating amount of the adhesive ink in the second layer forming step was 38 g / m 2 above,

[0021] The total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step was 212 g / m 2 the following. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram showing the schematic process of the transfer recording method according to the embodiment.

[0023] Figure 2 Table 1 shows the compositions of adhesive inks of Examples, Comparative Examples, and Reference Examples.

[0024] Figure 3 Table 2 shows the compositions of the image forming inks of Examples, Comparative Examples, and Reference Examples.

[0025] Figure 4 Table 3 shows the conditions and evaluation results of the transfer recording method of Examples.

[0026] Figure 5 Table 4 shows the conditions and evaluation results of the transfer recording methods of Examples, Comparative Examples, and Reference Examples.

[0027] Description of Reference Numerals

[0028] 1: transfer medium; 11: substrate; 12: peeling layer; 2': image forming ink; 2: first layer; 3': adhesive ink; 3: second layer; 4: recording part; 5: cloth; 50: inkjet head; 50': inkjet head; 100: recorded object. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention. The embodiments described below are used to illustrate examples of the present invention. The present invention is not limited to the following embodiments, and various modifications of the embodiments are also included within the scope of not changing the gist of the present invention. In addition, the structures described below are not all necessary structures of the present invention.

[0030] 1. Transfer recording method

[0031] The transfer recording method involved in this embodiment includes: a first layer forming process, in which image forming ink is ejected from an inkjet head to a transfer medium having a peeling layer to form a first layer; a second layer forming process, in which adhesive ink is ejected from the inkjet head to form a second layer in a manner overlapping with the first layer; and a thermal transfer process, in which the first layer and the second layer are thermally transferred to the cloth by heating the surface of the transfer medium on which the first layer and the second layer are formed in a state opposite to the cloth. Figure 1 It is a schematic diagram showing the schematic process of the transfer recording method according to the present embodiment.

[0032] 1.1. First layer formation process

[0033] In the first layer forming step, the first layer is formed by ejecting ink for image formation from an inkjet head onto the transfer medium having the release layer.

[0034] 1.1.1. Transfer medium

[0035] The transfer medium 1 is not limited as long as it has a peeling layer 12. In the example shown in the figure, it has a substrate 11 and a peeling layer 12. The shape of the transfer medium 1 is not particularly limited, but it is preferred to use a sheet-like medium. Thereby, the first layer 2 and the second layer 3 can be formed more appropriately by an inkjet method. In addition, when the substrate 11 is a sheet, the thickness of the substrate 11 is, for example, 25 μm or more and 300 μm or less, preferably 50 μm or more and 200 μm or less.

[0036] Examples of the constituent material of the substrate 11 include paper, plastic materials, and metal materials. Examples of the plastic material constituting the substrate 11 include polyesters such as polyethylene terephthalate, and polyolefins such as polyethylene and polypropylene.

[0037] The release layer 12 is a layer having a releasable property. The transfer medium 1 has the release layer 12, so that the constituent materials of the first layer 2 and the second layer 3 can be prevented from remaining on the transfer medium 1 after the thermal transfer process. As the constituent material of the release layer 12, for example, polyethylene wax-based release agents, silicone-based release agents, fluorine release agents, etc. can be cited. The thickness of the release layer 12 is not particularly limited, but is preferably 5 μm or more and 80 μm or less, and more preferably 10 μm or more and 50 μm or less.

[0038] 1.1.2. Image forming ink

[0039] The image forming ink contains a color material and water.

[0040] (1) Color materials

[0041] Examples of the coloring material contained in the image forming ink 2 ′ include various inorganic pigments and organic pigments. Two or more components may be used in combination as the pigment.

[0042] Examples of the inorganic pigment include carbon blacks such as furnace black, lamp black, acetylene black, and channel black, iron oxide, and titanium oxide.

[0043] Examples of organic pigments include azo pigments such as insoluble azo pigments, condensed azo pigments, azo lakes, and chelate azo pigments; polycyclic pigments such as phthalocyanine pigments, perylene and perinone pigments, anthraquinone pigments, quinacridone pigments, dioxane pigments, thioindigo pigments, isoindolinone pigments, and quinophthalone pigments; dye chelates such as basic dye type chelates and acid dye type chelates; dye lakes such as basic dye type lakes and acid dye type lakes; nitro pigments, nitroso pigments, aniline black, and daylight fluorescent pigments.

[0044] Examples of carbon black used as a black pigment include No. 2300, No. 900, MCF88, No. 33, No. 40, No. 45, No. 52, MA7, MA8, MA100, No. 2200B, etc. (all manufactured by Mitsubishi Chemical Corporation), Raven 5750, Raven 5250, Raven 5000, Raven 3500, Raven 1255, Raven 700, etc. (all manufactured by Columbia Carbon Black Co., Ltd.), Regal 400R, Regal 330R, Regal 660R, Mogul L, Monarch 700, Monarch 800, Monarch 880, Monarch 900, Monarch 1000, Monarch 1100, Monarch 1300, Monarch 1400, etc. (all manufactured by Cabot Corporation), Color Black FW1, Color Black FW2, Color Black FW2V, ColorBlack FW18, Color Black FW200, Color B1ack S150, Color Black S160, Color BlackS170, Printex 35, Printex U, Printex V, Printex 140U, Special Black 6, Special Black 5, Special Black 4A, Special Black 4 (the above, manufactured by Degussa Company), etc.

[0045] Examples of the white pigment include CI Pigment White 6, 18, and 21.

[0046] Examples of yellow pigments include CI 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, and 180.

[0047] Examples of the purple-red pigment include CI 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, and 245; and CI Pigment Violet 19, 23, 32, 33, 36, 38, 43, and 50.

[0048] Examples of the bluish-violet pigment include CI Pigment Blue 1, 2, 3, 15, 15:1, 15:2, 15:3, 15:34, 15:4, 16, 18, 22, 25, 60, 65, 66, and CI Vat Blue 4 and 60.

[0049] Moreover, as pigments of other colors, CI pigment green 7, 10, CI pigment brown 3, 5, 25, 26, CI pigment orange 1, 2, 5, 7, 13, 14, 15, 16, 24, 34, 36, 38, 40, 43, 63 etc. are mentioned, for example.

[0050] Image forming ink 2 'can contain self-dispersible pigment as pigment. Self-dispersible pigment is a self-dispersible pigment having a hydrophilic group on its pigment surface, and as its hydrophilic group, for example, -OM, -COOM, -CO-, -SO3M, -SO2M, -SO2NH2, -RSO2M, -PO3HM, -PO3M2, -SO2NHCOR, -NH3, -NR3, etc. can be listed. In addition, M in the formula represents a hydrogen atom, an alkali metal, ammonium or an organic ammonium, and R represents an alkyl group having a carbon number of more than 1 and less than 12 or a naphthyl group that may have a substituent. In addition, between the pigment surface and the hydrophilic group, for example, a phenyl group may exist.

[0051] Self-dispersible pigments can be manufactured, for example, by subjecting the pigment to physical or chemical treatment to bonding of hydrophilic groups to the surface of the pigment. Examples of such physical treatments include vacuum plasma treatments, etc. In addition, examples of chemical treatments include wet oxidation processes in which oxidation is performed in water by an oxidant, etc.

[0052] In addition, as self-dispersible pigment, for example, the color development of the self-dispersible pigment of the surface treatment carried out by the oxidation treatment utilizing hypohalous acid and / or hypohalite, the oxidation treatment utilizing ozone or the oxidation treatment utilizing persulfate and / or persulfate is high, and it is preferred in this regard. In addition, as self-dispersible pigment, commercially available products can also be utilized, and as preferred examples, MicrojetCW1 (manufactured by Oriental Chemical Industry Co., Ltd.), CAB-O-JET250C, CAB-O-JET260M, CAB-O-JET270Y, CAB-O-JET444MP (manufactured by Cabot Corporation) etc. can be listed.

[0053] The content of the pigment in the image forming ink 2 ′ is not particularly limited, but is preferably 1.0 mass % to 25.0 mass %, more preferably 2.0 mass % to 20.0 mass %, and further preferably 5.0 mass % to 15.0 mass %.

[0054] Thus, in the recording portion 4 formed using the image forming ink 2', sufficient color concentration can be easily ensured, the color rendering on the cloth as the cloth can be made better, and the storage stability of the image forming ink 2', the ejection stability of the inkjet method, the clogging recovery of the inkjet head, etc. can be made better.

[0055] (2) Water

[0056] The image forming ink 2' contains water. Examples of the water include pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, and distilled water, and water from which ionic impurities are removed as much as possible, such as ultrapure water. In addition, when water sterilized by ultraviolet irradiation or addition of hydrogen peroxide is used, the generation of bacteria or fungi can be reduced when the composition is stored for a long time.

[0057] Water functions as a dispersion medium for dispersing pigments in the image forming ink 2'. The content of water in the image forming ink 2' is preferably 50.0 mass % to 75.0 mass %, more preferably 52.0 mass % to 70.0 mass %, and further preferably 54.0 mass % to 65.0 mass %.

[0058] (3) Other ingredients

[0059] (3-1) Organic solvents

[0060] The image forming ink 2' may contain an organic solvent. Thus, the viscosity and surface tension of the image forming ink 2' can be appropriately adjusted. In addition, for example, the image forming ink 2' can have excellent moisture retention, and the solid components of the image forming ink 2' can be more effectively prevented from accidentally precipitating due to drying of the inkjet head, etc., and the clogging recovery can also be excellent, and the ejection stability of the image forming ink 2' can be made more excellent.

[0061] As the organic solvent, a water-soluble organic solvent is preferably used. As such a water-soluble organic solvent, an organic solvent having a solubility in water at 25° C. of 10 g / 100 g water or more can be appropriately used.

[0062] The organic solvent contained in the image forming ink 2 ′ is, in particular, a water-soluble organic solvent, and examples thereof include polyol compounds, glycol ethers, and cyclic amide compounds, and one or more selected from these may be used in combination.

[0063] Specific examples of the polyol compound include 1,2-pentanediol, glycerol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, polyoxyethylene polyoxypropylene glycol, 1,2-hexanediol, 1,2-heptanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 2- Diols such as methyl-3-phenoxy-1,2-propanediol, 3-(3-methylphenoxy)-1,2-propanediol, 3-hexyloxy-1,2-propanediol, 2-hydroxymethyl-2-phenoxymethyl-1,3-propanediol, 3-methyl-1,3-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2-methyl-2,4-pentanediol, and 3-methyl-1,5-pentanediol.

[0064] Examples of glycol ethers include monoalkyl ethers of glycols selected from ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, and polyoxyethylene polyoxypropylene glycol. Examples of the monoalkyl ethers include triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, triethylene glycol monoethyl ether, and dipropylene glycol monopropyl ether.

[0065] Examples of the cyclic amide compound include 2-pyrrolidone, N-methyl-2-pyrrolidone, N-hydroxyethyl-2-pyrrolidone, 1,3-dimethylimidazolidinone, 2-piperidone (δ-valerolactam), and N-cyclohexyl-2-pyrrolidone.

[0066] The content of the organic solvent in the image forming ink 2 ′ is preferably 5.0 mass % or more and 35.0 mass % or less, more preferably 10.0 mass % or more and 30.0 mass % or less, and further preferably 15.0 mass % or more and 25.0 mass % or less.

[0067] Thus, the viscosity and surface tension of the image forming ink 2' can be adjusted more appropriately. In addition, the image forming ink 2' can have better moisture retention, and the solid components of the image forming ink 2' can be more effectively prevented from accidentally precipitating due to drying of the inkjet head, etc., and the clogging recovery property can also be improved, and the ejection stability of the image forming ink 2' can be made better.

[0068] (3-2) Thermoplastic resin

[0069] The image forming ink 2' may contain a thermoplastic resin. Thus, for example, the adhesion of the recording unit 4 containing the pigment to the cloth 5 can be improved. In addition, the transferability of the thermoplastic resin contained in the image forming ink can be exerted. That is, in addition to the transferability of the adhesive ink described later, the transferability of the image can also be improved. In addition, the hand feel of the manufactured recorded object 100 can be made excellent.

[0070] The content of the thermoplastic resin in the image forming ink 2' only needs to be 15.0 mass % or less. The image forming ink 2' may not contain any resin, but the content of the thermoplastic resin in the image forming ink 2' is preferably 2.0 mass % or more and 13.0 mass % or less, more preferably 4.0 mass % or more and 12.0 mass % or less, and further preferably 7.0 mass % or more and 11.0 mass % or less.

[0071] The form of the thermoplastic resin in the image forming ink 2 ′ is not particularly limited. For example, the thermoplastic resin may be contained in the image forming ink 2 ′ in a dispersed state or in a dissolved state, but is preferably contained in a dispersed state.

[0072] When the thermoplastic resin is contained in a dispersed state in the image forming ink 2 ′, the average particle size is preferably 30 nm to 3 μm, more preferably 50 nm to 1 μm, and further preferably 60 nm to 300 nm.

[0073] In the present specification, the average particle size refers to the average particle size based on volume, and can be obtained, for example, by adding a sample to methanol and dispersing the resulting dispersion for 3 minutes using an ultrasonic disperser and measuring the dispersion using a Coulter counter particle size distribution analyzer (TA-II model manufactured by COULTER ELECTRONICS INS) using an aperture of 50 μm.

[0074] Examples of the thermoplastic resin contained in the image forming ink 2 ′ include polyurethane, polyester, styrene acrylic resin, acrylic resin, polyvinyl chloride, and the like, and one or more selected from these may be used in combination. Among them, polyurethane is preferred.

[0075] The glass transition temperature of the thermoplastic resin contained in the image forming ink 2 ′ is preferably from −40° C. to 0° C., more preferably from −35° C. to −5° C., and even more preferably from −30° C. to −10° C. This can improve the texture and washing fastness of the produced recorded object 100 .

[0076] When the image forming ink 2' contains a thermoplastic resin, when the content of the thermoplastic resin in the image forming ink 2' is set to XR [mass %] and the content of the color material is set to XP [mass %], it is preferred that the relationship 0.2≤XR / XP≤1.8 is satisfied, it is more preferred that the relationship 0.6≤XR / XP≤1.5 is satisfied, and it is further preferred that the relationship 0.8≤XR / XP≤1.2 is satisfied.

[0077] Thus, in the recording portion 4 formed using the image forming ink 2', sufficient color density can be easily ensured, the color development on the cloth can be made more excellent, and the storage stability of the image forming ink 2', the ejection stability of the inkjet method, the clogging recovery of the inkjet head, etc. can be made more excellent. In addition, the feel of the recorded object 100 and the close adhesion of the recording portion 4 to the cloth 5 can be made more excellent.

[0078] (3-3) Surfactants

[0079] The image forming ink 2' may contain a surfactant. As the surfactant, various surfactants such as anionic surfactants, cationic surfactants, and nonionic surfactants may be used.

[0080] When the image forming ink 2 ′ contains a surfactant, the content of the surfactant in the image forming ink 2 ′ is preferably 0.02 mass % to 1.50 mass %, more preferably 0.05 mass % to 1.00 mass %, and further preferably 0.10 mass % to 0.70 mass %.

[0081] (3-4) Other ingredients

[0082] The image forming ink 2' may contain components other than the above components. Hereinafter, such components are also referred to as "other components" in this item.

[0083] Examples of other components include chelating agents, preservatives, mildew inhibitors, rust inhibitors, fire retardants, various dispersants, pH adjusters such as triethanolamine, dyes, antioxidants, ultraviolet absorbers, oxygen absorbers, solubilizing agents, and penetrants.

[0084] As the chelating agent, for example, ethylenediaminetetraacetate and the like can be cited. In addition, as the preservative / mildewproof agent, for example, sodium benzoate, sodium pentachlorophenol, sodium 2-pyridinethiol-1-oxide, sodium sorbate, sodium dehydroacetate, 1,2-dibenzisothiazolin-3-one, 4-chloro-3-methylphenol and the like can be cited. In addition, as the rust inhibitor, for example, benzotriazole and the like can be cited. As the preservative / mildewproof agent, for example, a compound having an isothiazolin ring structure in the molecule can be used.

[0085] The content of other components in the image forming ink 2 ′ is preferably 6.0% by mass or less, and more preferably 5.0% by mass or less.

[0086] (4) Physical properties, etc.

[0087] The viscosity of the image forming ink 2' at 25°C is preferably 2 mPa·s or more and 10 mPa·s or less, and more preferably 3 mPa·s or more and 8 mPa·s or less. This makes it less likely that the nozzles of the inkjet head will be clogged, and the ejection stability of the image forming ink 2' is further improved. In addition, the nozzle clogging recovery can be made better.

[0088] The viscosity can be determined by measuring with a vibration viscometer, a rotational viscometer, a capillary viscometer, or a falling ball viscometer. For example, the viscosity can be determined by measuring with a vibration viscometer in accordance with JIS Z8809.

[0089] The surface tension of the image forming ink 2 ′ at 25° C. is not particularly limited, but is preferably 20 mN / m to 60 mN / m, more preferably 25 mN / m to 50 mN / m, and further preferably 27 mN / m to 40 mN / m.

[0090] This makes it more difficult for the nozzles of the inkjet head to be clogged, and the ejection stability of the image forming ink 2' can be further improved. In addition, the nozzle clogging recovery property can be made more excellent.

[0091] In addition, as the surface tension, a value measured by the Wilhelmy method or the ring method can be adopted. The surface tension can be measured using a surface tensiometer (for example, DY-300, DY-500, DY-700, etc., manufactured by Kyowa Interface Science Co., Ltd.).

[0092] 1.1.3. About ejection by inkjet method

[0093] The first layer 2 is formed by ejecting the image forming ink 2' onto the transfer medium 1 having the release layer 12 by the inkjet method. More specifically, the image forming ink 2' is ejected so as to adhere to the release layer 12 of the transfer medium 1.

[0094] As the inkjet method, for example, there are charge deflection method, continuous method, piezoelectric method, bubble jet (registered trademark) method and other on-demand methods, but the piezoelectric method using an inkjet head using a piezoelectric vibrator is particularly preferred. This can further reduce the modification of the constituent components of the image forming ink 2' in the inkjet head 50, and can make the ejection stability of the inkjet method more excellent.

[0095] In addition, as the inkjet head 50 , there are a line head that performs recording by a line method and a serial head that performs recording by a serial method.

[0096] In the line method using a line head, for example, an inkjet head having a width greater than the recording width of the transfer medium 1 is fixed to a recording device. Then, the transfer medium 1 is moved in the sub-scanning direction (the conveying direction of the transfer medium 1), and ink droplets are ejected from the nozzles of the inkjet head 50 in conjunction with the movement, thereby forming the first layer 2 on the transfer medium 1.

[0097] In the serial method using a serial head, for example, the inkjet head 50 is mounted on a carriage that can move in the width direction of the transfer medium 1. Then, the carriage is moved in the main scanning direction (the width direction of the transfer medium 1), and ink droplets are ejected from the nozzles of the serial head as the inkjet head 50 in conjunction with the movement, thereby forming the first layer 2 on the transfer medium 1.

[0098] In this step, the first layer 2 is formed as a reverse image of the recording portion 4 to be formed on the fabric 5. In addition, in this step, a plurality of image forming inks 2' can be used. For example, a plurality of image forming inks 2' of different tones can be used, and more specifically, black ink, cyan ink, magenta ink, and yellow ink can be used.

[0099] For example, in the first layer forming step, the first image forming ink containing a color material and the second image forming ink containing a white pigment may be ejected in an overlapping manner to form the first layer. In this way, when the second image forming ink (white ink) is ejected in an overlapping manner in addition to the first image forming ink (color ink), the total amount of ink adhesion increases, and in this case, image blurring can be suppressed, and a high-quality image can be formed.

[0100] 1.2. Second layer formation process

[0101] In the second layer forming step, adhesive ink is ejected from the inkjet head to form the second layer so as to overlap with the first layer.

[0102] 1.2.1. Adhesive ink

[0103] The adhesive ink 3 ′ is used to form the second layer 3 , and contains a thermoplastic resin and water.

[0104] (1) Thermoplastic resin

[0105] Since the adhesive ink 3 ′ contains a thermoplastic resin, the adhesion of the recording section 4 to the fabric 5 can be improved, and the manufactured recorded matter 100 can be improved in durability against washing.

[0106] The thermoplastic resin contained in the adhesive ink 3 ′ is the same as that described in the section “1.1.2. Image forming ink (3-2) Thermoplastic resin”, and therefore the description thereof is omitted.

[0107] The thermoplastic resin contained in the adhesive ink 3 ′ is more preferably one or more selected from polyester resin, polyurethane resin, acrylic resin, and vinyl chloride resin. This allows for better image transfer.

[0108] The melting point of the thermoplastic resin contained in the adhesive ink 3 ′ is preferably 80° C. to 140° C., more preferably 85° C. to 130° C., and even more preferably 90° C. to 120° C. This allows the recorded object 100 to have both a higher level of texture and durability against washing.

[0109] The softening point of the thermoplastic resin is preferably below the heating temperature of the fabric in the thermal transfer process. In addition, the softening point of the thermoplastic resin is preferably 80°C to 170°C, more preferably 90°C to 160°C, and even more preferably 100°C to 150°C. When the softening point of the thermoplastic resin is within this range, the viscosity of the transfer material can be further suppressed, and the damage to the fabric due to the heat during thermal transfer can be further reduced.

[0110] The softening point of a thermoplastic resin can be measured, for example, using a dropping point / softening point measuring device "Dropping Point System DP70" from Mettler-Toledo. As an overview of the measurement, the measurement is performed until the state changes from solid to liquid, and the temperature when the substance flows to a certain distance is measured under specified measurement conditions. In the softening point measurement, a special sample cup with a 6.35 mm opening at the bottom is used, and a stainless steel bowl of standardized size is used to measure the resin in order to allow the softened resin to fall from the cup during heating. The temperature of the heating furnace when the resin softens and falls to a position 19 mm away from the hole of the cup is recorded as the softening point temperature of the resin.

[0111] The solid content of the thermoplastic resin in the adhesive ink 3' is 5% to 25% by mass relative to the total amount of the adhesive ink 3'. In addition, the solid content of the thermoplastic resin in the adhesive ink 3' is preferably 5.0% to 20.0% by mass, more preferably 6.0% to 17.0% by mass, and even more preferably 7.0% to 15.0% by mass. Thus, the hand feel and washing fastness of the recorded object 100 can be achieved at a higher level.

[0112] (2) Water

[0113] The adhesive ink 3' contains water. In the adhesive ink 3', water functions as a dispersion medium for dispersing resin or a solvent for dissolving resin. The description of water is the same as that in the section "1.1.2. Image forming ink (2) Water", so the description is omitted.

[0114] The content of water in the adhesive ink 3 ′ is preferably 50.0 mass % or more and 85.0 mass % or less, more preferably 55.0 mass % or more and 80.0 mass % or less, and further preferably 60.0 mass % or more and 75.0 mass % or less.

[0115] (3) Organic solvents, surfactants and other ingredients

[0116] The adhesive ink 3 ′ may contain at least one of an organic solvent, a surfactant, and other components. These components are the same as those described in “1.1.2. (3-1) Organic solvent, (3-3) Surfactant, and (3-4) Other components of image forming ink”, and thus their description is omitted.

[0117] 1.2.2. Physical properties, etc.

[0118] The viscosity of the adhesive ink 3 ′ at 25° C. is preferably 2 mPa·s to 10 mPa·s, more preferably 3 mPa·s to 8 mPa·s. This makes it more difficult for the nozzles of the inkjet head to be clogged, and the discharge stability of the adhesive ink 3 ′ is further improved.

[0119] The surface tension of the adhesive ink 3' at 25°C is not particularly limited, but is preferably 20 mN / m to 60 mN / m, more preferably 25 mN / m to 50 mN / m, and even more preferably 27 mN / m to 40 mN / m. This makes it less likely that the nozzles of the inkjet head will be clogged, and the ejection stability of the adhesive ink 3' is further improved.

[0120] 1.2.3. About ejection by inkjet method

[0121] The second layer 3 is formed by ejecting adhesive ink 3' onto the transfer medium 1 on which the first layer 2 is formed, using an inkjet method. That is, the second layer 3 is formed so as to overlap with the first layer 2.

[0122] The inkjet method is the same as that described in the item "1.1.3. About ejection by the inkjet method", so the description is omitted. As the inkjet method, a piezoelectric method using an inkjet head using a piezoelectric vibrator is more preferable. This can further reduce the modification of the constituent components of the adhesive ink 3' in the inkjet head 50', and can make the ejection stability of the inkjet method more excellent.

[0123] Although it varies depending on the composition of the pigment ink 2 ′, etc., the time from when the pigment ink 2 ′ adheres to the transfer medium 1 to when the adhesive ink 3 ′ adheres is preferably 1 second to 60 seconds, more preferably 2 seconds to 30 seconds.

[0124] In addition, in this step, a plurality of types of adhesive inks 3 ′ can be used.

[0125] 1.3. Thermal transfer process

[0126] In the thermal transfer step, the surface of the transfer medium on which the first layer and the second layer are formed is heated in a state facing the cloth, thereby thermally transferring the first layer and the second layer to the cloth.

[0127] 1.3.1. Cloth

[0128] The cloth is not particularly limited. The raw materials constituting the cloth are also not particularly limited, and examples thereof include natural fibers such as cotton, linen, wool, and silk, synthetic fibers such as polypropylene, polyester, acetate, triacetate, polyamide, and polyurethane, and biodegradable fibers such as polylactic acid. These fibers may also be blended. The above-mentioned fibers may be made into any form such as textiles, knitted fabrics, and nonwoven fabrics, and may also be interwoven.

[0129] In the present embodiment, as the method of fabric, for example, cloth, clothing or other clothing items can be listed. The fabric includes textiles, knitwear, non-woven fabrics, etc. The clothing or other clothing items include, in addition to furniture such as sewn T-shirts, handkerchiefs, scarves, towels, handbags, cloth bags, curtains, bed sheets, bedspreads, wallpapers, etc., as well as fabrics before and after cutting as parts before sewing. As these methods, a long-shaped method of winding in a roll, a method of cutting into a predetermined size, a method of product shape, etc. can be listed.

[0130] 1.3.2. Heating conditions

[0131] The heating temperature in this step is not particularly limited, but is preferably 120°C to 270°C, more preferably 140°C to 250°C, and further preferably 150°C to 210°C.

[0132] This can suppress the constituent materials of the first layer 2 and the second layer 3 from remaining on the transfer medium 1 , and can save energy and improve the productivity of the recorded matter 100 .

[0133] When the glass transition temperature of the thermoplastic resin contained in the adhesive ink 3' is set to Tg [°C] and the heating temperature in the thermal transfer process is set to Tp [°C], the relationship of 70 ≤ Tp-Tg ≤ 290 is preferably satisfied, the relationship of 95 ≤ Tp-Tg ≤ 260 is more preferably satisfied, and the relationship of 110 ≤ Tp-Tg ≤ 210 is further preferably satisfied. In this way, the constituent materials of the first layer 2 and the second layer 3 can be reduced from remaining on the transfer medium 1, energy can be saved, and the productivity of the recorded object 100 is improved.

[0134] The heating time in this step is not particularly limited, but is preferably 5 seconds to 90 seconds, more preferably 15 seconds to 70 seconds, and even more preferably 20 seconds to 60 seconds.

[0135] In this step, any method may be used as long as the surface of the transfer medium 1 on which the first layer 2 and the second layer 3 are formed is heated in a state facing the fabric 5, but heat pressing is more preferable.

[0136] When this step is performed by heat pressing, the pressure applied to the laminate of the transfer medium 1 and the fabric 5 is preferably 0.1 N / cm 2 Above and 30N / cm 2 Below, more preferably 0.6N / cm 2 Above and 15N / cm 2 Below, more preferably 1.5 N / cm 2 Above and 5N / cm 2 the following.

[0137] 1.4. Records

[0138] Through the above steps, a recorded object 100 is obtained ( 1 d ). The recorded object 100 obtained in the above manner has a recorded portion 4 formed of the first layer 2 and the second layer 3 .

[0139] At least a portion of the recording portion 4 can enter the interior of the absorbent fabric 5. At least a portion of the recording portion 4 is usually formed integrally with the constituent materials of the first layer 2 and the constituent materials of the second layer 3, but in the illustrated structure, the entire recording portion 4 is formed integrally with the constituent materials of the first layer 2 and the constituent materials of the second layer 3.

[0140] 1.5. Coating amount and others

[0141] In the transfer recording method of this embodiment, the coating amount of the adhesive ink in the second layer forming step is 38 g / m 2 In the transfer recording method of this embodiment, the total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step is 212 g / m 2 By setting in this way, even if the evaporation rate of the ink liquid component is not adjusted, it is possible to suppress the bleeding of the image and form a high-quality image on the cloth. In addition, when a plurality of image forming inks are applied in the first layer forming process, the total amount of the applied inks and the amount of the adhesive ink applied in the second layer forming process is 212 g / m 2 the following.

[0142] The coating amount of the adhesive ink in the second layer forming step is more preferably 47 g / m 2 More preferably, 57 g / m 2 In addition, the upper limit of the coating amount of the adhesive ink in the second layer forming step is not particularly limited, but is preferably 150 g / m 2 Below, more preferably 140g / m 2 Below, more preferably 100g / m 2 By setting in this way, even without adjusting the evaporation rate of the liquid component of the ink, it is possible to further suppress the blurring of the image and form an image with higher quality on the cloth.

[0143] On the other hand, the total amount of the image forming ink applied in the first layer forming step and the adhesive ink applied in the second layer forming step is more preferably 210 g / m 2 Below, more preferably 200g / m 2 Below, more preferably 180g / m 2 By setting in this way, even without adjusting the evaporation rate of the liquid component of the ink, it is possible to further suppress the blurring of the image and form an image with higher quality on the cloth.

[0144] In the transfer recording method of the present embodiment, when the image forming ink further contains a thermoplastic resin, the total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step is more preferably 76 g / m 2In this way, the transferability of the image can be further improved by the resin contained in the image forming ink. In addition, in this case, the total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step is more preferably 90 g / m 2 More preferably, 110 g / m 2 More preferably, 130 g / m 2 above.

[0145] In addition, when the amount of ink applied to an A4-sized transfer medium is converted into duty, 19.24 g / m 2 Equivalent to duty 100%.

[0146] Thus, according to the transfer recording method of this embodiment, even if the evaporation rate of the ink liquid component is not adjusted, the image blurring can be suppressed, and a high-quality image can be formed on the cloth, so the recording resolution can be improved. For example, even if the recording resolution is 600dpi×600dpi or more, preferably 720dpi×720dpi or more, a high-quality image can be formed on the cloth. That is, when the recording resolution is high, the effect of the transfer recording method of this embodiment is more significant.

[0147] 2. Examples, Comparative Examples and Reference Examples

[0148] Hereinafter, the present invention will be described in more detail with reference to Examples etc., but the present invention is not limited to these Examples. Hereinafter, "%" is a mass basis unless otherwise specified.

[0149] 2.1. Preparation of adhesive ink

[0150] Each component was mixed as described in Table 1 to obtain adhesive inks 1 to 11. The details of the components in Table 1 are as follows.

[0151] ·Polyester resin Z-687: manufactured by Huying Chemical Industry Co., Ltd., solid content (softening point 185℃~200℃)

[0152] ·Polyester resin RZ-570: manufactured by Huying Chemical Industry Co., Ltd., solid content (softening point 160℃~170℃)

[0153] ·Polyester resin Z-880: manufactured by Huying Chemical Industry Co., Ltd., solid content (softening point 85℃~95℃)

[0154] Polyurethane resin: 86 parts by weight of a bifunctional polyester polyol with a molecular weight of 2,000 prepared by mixing and stirring adipic acid, isophthalic acid, 1,4-butanediol and ethylene glycol as main components and adding 15 mol% of isophthalic acid among all the components, 14 parts by weight of xylene diisocyanate, 1 part by weight of vinyl tris(2-methoxyethoxy)silane and 0.01 part by weight of dibutyltin dilaurate at 100°C for 4 to 8 hours to prepare a polyurethane prepolymer (softening point 100°C) with a number average molecular weight of 10,000.

[0155] ·Acrylic resin: 104 parts by mass of ion exchange water was added to a 2L glass flask equipped with a stirrer, a thermometer, and a reflux cooler for deoxygenation. A solution prepared by dissolving 2 parts by mass of Aqualon HS-10 (manufactured by Daiichi Kogyo Seiyaku, polyoxyethylene nonylpropylenephenyl ether ammonium sulfate) in 26 parts by mass of ion exchange water was added to 57 parts by mass of ethyl acrylate, 42 parts by mass of methyl methacrylate, and 1 part by mass of 80% methacrylic acid, and emulsified using a homomixer. While dripping the emulsion into the 2L glass flask over 5 to 10 hours, an acrylic resin emulsion (emulsion of ethyl acrylate-methyl methacrylate copolymer resin) was obtained by free radical polymerization by performing a redox reaction at 50°C in the presence of a peroxide and a reducing agent so that the softening point was 100°C.

[0156] · Vinyl chloride resin: After nitrogen substitution in a polymerization container equipped with a stirrer, a capacitor, a thermometer and a nitrogen inlet, 67 parts by mass of ion-exchanged water, 4 parts by mass of Pelex SSL (anionic surfactant sodium alkyl diphenyl ether disulfonate manufactured by Kao Corporation), 5 parts by mass of Noigen L-6190 (nonionic surfactant manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), 52 parts by mass of vinyl chloride and 48 parts by mass of 2-ethylhexyl acrylate were added, and heated to 60° C. while stirring. A solution prepared by dissolving 0.3 parts by mass of ammonium persulfate (initiator) in 10 parts by mass of ion-exchanged water and a solution prepared by dissolving 0.1 parts by mass of sodium hydrogen sulfite in 3 parts by mass of ion-exchanged water were further added, and polymerization reaction was carried out in a redox system so that the softening point was 100° C. for 5 to 20 hours. When the internal pressure of the polymerization reached 0 MPa, the residual monomers were removed in a vacuum to 1000 ppm, and then the mixture was cooled to 40° C. or less to obtain a polymer. Then, a preservative or ion exchange water is added to obtain a vinyl chloride resin emulsion (vinyl chloride-acrylic acid copolymer resin emulsion)

[0157] ·SAG503A: Surfactant, Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.)

[0158] 2.2. Preparation of ink for image formation

[0159] The color ink and the white ink were obtained by mixing the respective components as shown in Table 2. The details of the components in Table 2 are as follows.

[0160] Polyurethane resin: WS-5100, manufactured by Mitsui Chemicals, Inc., solid content

[0161] Carbon black: Oriental Chemical Industry Co., Ltd., Microjet CW1

[0162] BYK-348: Silicone surfactant, manufactured by BYK Japan Co., Ltd.

[0163] Titanium dioxide dispersion A: A material prepared as follows was used.

[0164] CI Pigment White 6 (specific gravity: 4.2 g / mL) was used as a pigment, and an anionic resin dispersant was used as a pigment dispersant. Specifically, a styrene-acrylic resin synthesized from 55% by mass of styrene, 20% by mass of acrylic acid, and 30% by mass of methyl methacrylate was used. With respect to 3 parts by mass of the pigment, 1 part by mass of the dispersant and 10 parts by mass of ion exchange water were mixed, and the obtained mixture was pre-mixed, and then dispersed for 15 minutes at a peripheral speed of 10 m / s and a liquid temperature of 30°C using a bead mill disperser (manufactured by Kotobuki Industry Co., Ltd., UAM-015) using zirconia beads with a diameter of 0.03 mm, and centrifuged using a centrifuge (manufactured by Kuboyama Shoji Co., Ltd., Model-3600) to separate the coarse particles, and a dispersion of titanium oxide was obtained.

[0165] Evaluation methods

[0166] 2.3.1. Production of Records

[0167] First, a transfer medium (printing film for DTF manufactured by Inkmania Co., Ltd.) was prepared in which a release layer composed of a release agent was provided on a base composed of polyethylene terephthalate.

[0168] Next, an inkjet recording device (manufactured by Seiko Epson Corporation, SC-F2150) was filled with the color ink (ink for forming the first image), white ink (ink for forming the second image), and adhesive ink shown in Tables 3 and 4, and the color ink and white ink were ejected from the inkjet head toward the surface of the transfer medium provided with the release layer at the injection amounts shown in Tables 3 and 4 to form the first layer of a specified pattern.

[0169] Next, the adhesive inks shown in Tables 3 and 4 were ejected from the inkjet head at the injection amounts shown in Tables 3 and 4 so as to overlap with the first layer, thereby forming a second layer having the same pattern as the first layer. The obtained transfer medium was dried at 160° C. for 5 minutes.

[0170] Next, the surface of the transfer medium on which the first and second layers were formed was placed against a cotton fine plain cloth (#4000) manufactured by Nisshinbo Co., Ltd., and subjected to a heat treatment at 180°C for 40 seconds, thereby thermally transferring the first and second layers to the cloth. Thereafter, the transfer medium was removed to obtain a recorded object.

[0171] In the reference example, a recorded object was produced in the same manner except that a second layer having the same pattern as the first layer was formed using thermoplastic resin powder (EcoFreen Fine Grain TPU Hot Melt Powder (white) manufactured by ECOFREEN) instead of adhesive ink.

[0172] 2.3.2. Evaluation of ejection (adhesive ink)

[0173] Regarding the bonding ink, the continuous printing stability was evaluated as the evaluation of the ejection. The bonding ink was filled in an inkjet printer (trade name PX-G930, manufactured by Seiko Epson Co., Ltd.) and recorded on a recording medium (manufactured by Inkmania, DTF printing film). Specifically, a filling pattern with a resolution of 720 dpi horizontally and 720 dpi vertically and capable of being recorded at 100% duty was made and used. 100 sheets of printing were performed in A4 size to confirm whether there was a direction error and whether the nozzle fell off. The evaluation was performed according to the following benchmarks, and the results were recorded in Tables 3 and 4.

[0174] A: No abnormality and the spray can be discharged.

[0175] B: Wrong direction, falling off occurs, but it can be ejected.

[0176] C: Cannot spray out.

[0177] 2.3.3. Evaluation of transferability

[0178] In each example, when the sample was transferred to a cloth, the peeling state from the transfer medium was visually confirmed, and the transferability (peeling property) was evaluated according to the following criteria. The results are shown in Tables 3 and 4.

[0179] AA: Transfer printed image area 100%.

[0180] A: The image area of ​​the transfer printing is 80% or more and less than 100%.

[0181] B: The image area of ​​the transfer printing is 50% or more and less than 80%.

[0182] C: The transfer-printed image area is less than 50%.

[0183] 2.3.4. Evaluation of image quality

[0184] The ink composition was filled in an inkjet printer (trade name PX-G930, manufactured by Seiko Epson Corporation) and recorded on a recording medium (manufactured by Inkmania, DTF printing film). Specifically, a filling pattern that can be recorded at a resolution of 720 dpi horizontally and 720 dpi vertically and with a duty of 100% was prepared and used. The ink overflowing from the entire surface pattern of the recorded object and the uneven aggregation were visually observed and evaluated according to the following evaluation criteria. In addition, the evaluation was performed in a laboratory at room temperature (25°C).

[0185] A: No abnormality

[0186] B: Slight disturbance in image quality is detected.

[0187] C: The disturbance of image quality is obviously found.

[0188] 2.3.5. Evaluation of color rendering

[0189] The color rendering properties of the transfer materials involved in each embodiment and each comparative example were evaluated. Specifically, the OD value of the recording portion of each transfer material was determined by measurement using a spectrophotometer FD-7 (manufactured by Konica Minolta), and the evaluation was performed according to the following criteria. It can be considered that the larger the value, the better the color rendering properties. B or above is a good level. In addition, the evaluation result of Example 4 "B *1 ” is the result of evaluating the color development of white ink.

[0190] (Evaluation criteria)

[0191] A: OD value is 1.3 or more.

[0192] B: OD value is 1.0 or more and less than 1.3.

[0193] C: OD value is less than 1.0.

[0194] 2.3.6. Evaluation of hand feel

[0195] The hand feel of each recorded article was evaluated. The hand feel of each recorded article was evaluated by a specific evaluator according to the following criteria. The evaluation results were in the order of C, B, and A, indicating excellent hand feel. In the case of A and B, it is considered that a good effect was obtained. In addition, the "C" of the reference example *2 ” means “hard”.

[0196] A: Soft, no stiffness found.

[0197] B: Slightly hard, with a slightly stiff feeling.

[0198] C: Has a noticeably stiff feeling.

[0199] 2.3.7. Evaluation of image quality at the image boundary

[0200] The ink composition was filled in an inkjet printer (trade name PX-G930, manufactured by Seiko Epson Corporation) and recorded on a recording medium (manufactured by Inkmania, DTF printing film). Specifically, a filling pattern with a resolution of 720 dpi horizontally and 720 dpi vertically and capable of being recorded at 100% duty was prepared and used. Hot melt powder (manufactured by ECOFREEN, EcoFreen Fine Grain TPU Hot Melt Powder (white)) was evenly sprinkled on the recorded object, and unnecessary powder was shaken off. In addition, the "C *3 ” means “dirt is present”.

[0201] A: No powdery dirt.

[0202] B: Powdery dirt is slightly found.

[0203] C: Powdery dirt was clearly observed.

[0204] 2.4. Evaluation results

[0205] The solid content of the thermoplastic resin is 5% by mass or more and 25% by mass or less relative to the total amount of the adhesive ink, and the coating amount of the adhesive ink in the second layer forming step is 38 g / m 2 The total amount of the image forming ink applied in the first layer forming step and the adhesive ink applied in the second layer forming step is 212 g / m 2 The following examples can suppress image bleeding and form high-quality images on fabrics. In Table 4, the mark "-" in the evaluation result means "cannot be determined".

[0206] The above-mentioned embodiment and modification examples are merely examples, and the present invention is not limited thereto. For example, each embodiment and each modification example can be appropriately combined.

[0207] The present invention includes structures that are substantially the same as the structures described in the embodiments, such as structures with the same functions, methods and results or structures with the same purposes and effects. In addition, the present invention includes structures that replace non-essential parts of the structures described in the embodiments. In addition, the present invention includes structures that can exert the same effects as the structures described in the embodiments or structures that achieve the same purposes. In addition, the present invention includes structures that add known technologies to the structures described in the embodiments.

[0208] The following contents are derived from the above-mentioned embodiment and modification examples.

[0209] The transfer recording method has:

[0210] a first layer forming step of ejecting an image forming ink from an inkjet head onto a transfer medium having a release layer to form a first layer;

[0211] a second layer forming step of ejecting adhesive ink from the inkjet head to form a second layer so as to overlap with the first layer; and

[0212] a thermal transfer step of thermally transferring the first layer and the second layer to the fabric by heating the surface of the transfer medium on which the first layer and the second layer are formed while the surface is facing the fabric,

[0213] The image forming ink contains a color material and water.

[0214] The adhesive ink comprises a thermoplastic resin and water,

[0215] The softening point of the thermoplastic resin is lower than the heating temperature of the fabric in the thermal transfer step.

[0216] The solid content of the thermoplastic resin is 5% by mass or more and 25% by mass or less relative to the total amount of the adhesive ink.

[0217] The coating amount of the adhesive ink in the second layer forming step was 38 g / m 2 above,

[0218] The total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step was 212 g / m 2 the following.

[0219] According to this transfer recording method, even without adjusting the evaporation rate of the liquid component of the ink, it is possible to suppress image blurring and form a high-quality image on the cloth.

[0220] In the above transfer recording method, it may be that:

[0221] In the first layer forming step, the first layer is formed by ejecting a first image forming ink containing a color material and a second image forming ink containing a white pigment in a superimposed manner.

[0222] According to this transfer recording method, in addition to the first image forming ink (color ink), the second image forming ink (white ink) is ejected in an overlapping manner. At this time, the total amount of ink adhesion increases. In this case, it is also possible to suppress image blurring and form a high-quality image.

[0223] In the above transfer recording method, it may be that:

[0224] The thermoplastic resin is selected from at least one of polyester resin, polyurethane resin, acrylic resin and vinyl chloride resin.

[0225] According to this transfer recording method, transfer can be performed more satisfactorily.

[0226] In the above transfer recording method, it may be that:

[0227] The thermoplastic resin has a softening point of 80° C. or higher and 170° C. or lower.

[0228] According to this transfer recording method, the stickiness of the transferred material can be further suppressed, and damage to the fabric due to heat during thermal transfer can be further reduced.

[0229] In the above transfer recording method, it may be that:

[0230] The image forming ink further includes a thermoplastic resin, and the total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step is 76 g / m 2 above.

[0231] According to this transfer recording method, the transferability can be further improved by the resin contained in the image forming ink.

[0232] In the above transfer recording method, it may be that:

[0233] The recording resolution is 600 dpi × 600 dpi or more.

[0234] According to this transfer recording method, it is possible to form a higher-definition image with suppressed image blurring.

Claims

1. A transfer recording method, characterized in that: have: a first layer forming step of ejecting an image forming ink from an inkjet head onto a transfer medium having a release layer to form a first layer; a second layer forming step of ejecting adhesive ink from the inkjet head to form a second layer in a manner overlapping with the first layer; as well as a thermal transfer step of heating the surface of the transfer medium on which the first layer and the second layer are formed while the surface is facing the cloth, thereby thermally transferring the first layer and the second layer to the cloth; The image forming ink contains a color material and water. The adhesive ink comprises a thermoplastic resin and water, The softening point of the thermoplastic resin is lower than the heating temperature of the fabric in the thermal transfer step. The solid content of the thermoplastic resin is 5% by mass or more and 25% by mass or less relative to the total amount of the adhesive ink. The coating amount of the adhesive ink in the second layer forming step was 38 g / m 2 above, The total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step was 212 g / m 2 the following.

2. The transfer recording method according to claim 1, characterized in that: In the first layer forming step, the first layer is formed by ejecting a first image forming ink containing a color material and a second image forming ink containing a white pigment in a superimposed manner.

3. The transfer recording method according to claim 1, characterized in that: The thermoplastic resin is selected from one or more of polyester resin, polyurethane resin, acrylic resin and vinyl chloride resin.

4. The transfer recording method according to claim 1, characterized in that: The softening point of the thermoplastic resin is 80° C. or higher and 170° C. or lower.

5. The transfer recording method according to claim 1, characterized in that: The image forming ink further includes a thermoplastic resin, and the total amount of the image forming ink applied in the first layer forming step and the amount of the adhesive ink applied in the second layer forming step is 76 g / m 2 above.

6. The transfer recording method according to claim 1, characterized in that: The recording resolution is 600 dpi × 600 dpi or more.

Images