JP2015010212A - Ink for sublimation transfer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink for sublimation transfer having excellent color development and discharge stability.SOLUTION: An ink for sublimation transfer comprises water, water-soluble organic solvent, and sublimable dye, the sublimable dye comprising C.I.Disperse Blue 359 and C.I.Disperse Blue 360.

Description

  The present invention relates to a sublimation transfer ink.

  Conventionally, dyeing | staining with respect to the fabric etc. using a sublimation transfer is performed widely. As a dyeing method using such sublimation transfer, for example, an ink jet method using an ink containing a sublimation dye on a sheet-like intermediate transfer medium such as paper (hereinafter also referred to as “sublimation transfer ink”) is used. After printing is performed, an intermediate transfer medium is superposed on a recording medium such as a fabric, and sublimation transfer is performed by heating, or an ink receiving layer of a recording medium (film product or the like) provided with a peelable ink receiving layer In addition, there is a method in which printing is performed by an ink jet method using a sublimation transfer ink, followed by heating as it is to perform sublimation diffusion dyeing on a recording medium on the lower layer side, and then peeling off the ink receiving layer.

  As a recording technique using such a sublimation transfer ink, for example, in Patent Document 1, rubbing, dot missing, and flying bending do not occur during printing, the printed sublimation transfer paper is not sticky, and a polyester fabric is hot pressed. For sublimation transfer of polyester fabric containing at least a sublimation dye, acetylene glycol surfactant, water-soluble organic solvent and water for the purpose of obtaining a clear and full color image with high density without distortion of the transfer image In the inkjet ink, the water-soluble organic solvent is composed of at least three kinds of glycerin, glycols and glycol ethers. In the ink, the glycerin content is in the range of 5 wt% to 30 wt%, and the glycol content The amount is in the range of 1% by weight to 15% by weight and contains glycol ethers. Amount inkjet ink for polyester fabric sublimation transfer are known in the range of less than 5 wt% 0.1 wt%.

JP 2010-053197 A

  However, in the conventional sublimation transfer ink, there is no black disperse dye having both sublimation and color development. In order to obtain a black color with good color development, it is conceivable to add a complementary color dye (yellow, red, etc.) based on a blue-based dye to make a black ink for sublimation transfer. Sex is inadequate.

  Furthermore, it is conceivable to increase the concentration of the sublimation dye in order to obtain a black color with good color development. However, in this case, there is a problem that the ejection stability is deteriorated. Therefore, in the sublimation transfer ink, there is a trade-off relationship between the problem of improving the color developability and the problem of improving the ejection stability.

  SUMMARY An advantage of some aspects of the invention is to provide an ink for sublimation transfer that is excellent in color development and ejection stability.

  The present inventors diligently studied to solve the above problems. As a result, the present invention has been completed by finding that the above problem can be solved by sublimation transfer ink containing a predetermined sublimation dye.

That is, the present invention is as follows.
[1]
Water, a water-soluble organic solvent, and a sublimable dye,
The sublimable dye is C.I. I. Disperse Blue 359 and C.I. I. An ink for sublimation transfer, including Disperse Blue 360.
[2]
C. I. Disperse Brown 27 and C.I. I. The sublimation transfer ink according to [1], further including at least one of Dispense Orange 25.
[3]
The ink for sublimation transfer according to [1] or [2] above, wherein a chroma C ^* in the Lab display system is 10 or less in the recorded matter after sublimation transfer.
[4]
The content of the sublimation dye is 5.0 to 10% by mass relative to 100% by mass of the total mass of the sublimation transfer ink, according to any one of [1] to [3] above. Ink for sublimation transfer.
[5]
The ink for sublimation transfer according to any one of [1] to [4] above, wherein the water-soluble organic solvent contains at least one of glycerin and alkylene glycol.
[6]
The sublimation transfer ink according to item [5], wherein the total content of glycerin and alkylene glycol is 10% by mass or more with respect to 100% by mass of the total mass of the sublimation transfer ink.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described in detail. However, the present invention is not limited to this, and various modifications can be made without departing from the gist thereof. Is possible.

[Sublimation transfer ink]
The sublimation transfer ink according to the present embodiment includes water, a water-soluble organic solvent, and a sublimation dye. I. Disperse Blue 359 and C.I. I. Disperse Blue 360 is included.

〔water〕
The sublimation transfer ink according to this embodiment contains water. The water is not particularly limited, and pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, distilled water, or ultrapure water can be used. The water content is preferably from 50 to 90 mass%, more preferably from 55 to 70 mass%, based on the total mass (100 mass%) of the sublimation transfer ink. When the water content is within the above range, the viscosity of the sublimation transfer ink can be adjusted to a suitable range.

  When the sublimation transfer ink contains water, the viscosity of the sublimation transfer ink can be adjusted more easily so as to be within a preferable range. Thereby, the sublimation transfer ink is further improved in ejection stability. Further, since water can be easily removed after discharge, the recorded matter is more productive.

(Water-soluble organic solvent)
The sublimation transfer ink according to this embodiment includes a water-soluble organic solvent. The content of the water-soluble organic solvent is preferably 1 to 40% by mass and more preferably 5 to 30% by mass with respect to the total mass (100% by mass) of the sublimation transfer ink. When the content of the water-soluble organic solvent is within the above range, the viscosity of the sublimation transfer ink can be adjusted more easily so as to be within a preferable range.

  Although it does not specifically limit as a water-soluble organic solvent used by this embodiment, For example, at least any one of glycerol and alkylene glycol is mentioned. By including such a water-soluble organic solvent, the moisture retention of the sublimation transfer ink tends to be more excellent. Therefore, clogging of the nozzle can be prevented and the discharge stability tends to be more excellent.

  Examples of the alkylene glycol include, but are not limited to, ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3- Butanediol, 3-methyl-1,3-butanediol, 1,2-pentanediol, 1,5-pentanediol, 2-methyl-2,4-pentanediol, 3-methyl-1,5-pentanediol, Examples include monoalkylene glycols typified by 1,2-hexanediol and 1,6-hexanediol; polyalkylene glycols typified by diethylene glycol, triethylene glycol, and dipropylene glycol.

  The total content of glycerin and alkylene glycol is preferably 10% by mass or more, and more preferably 15% by mass or more, based on the total mass (100% by mass) of the sublimation transfer ink. When the total content of glycerin and alkylene glycol is 10% by mass or more, nozzle clogging can be prevented, and the ejection stability tends to be superior. Further, the total content of glycerin and alkylene glycol is preferably 40% by mass or less, and more preferably 30% by mass or less, based on the total mass (100% by mass) of the sublimation transfer ink. When the total content of glycerin and alkylene glycol is 40% by mass or less, an increase in the viscosity of the sublimation transfer ink due to evaporation of water in the sublimation transfer ink in the vicinity of the nozzle tends to be suppressed.

  Examples of the water-soluble organic solvent used in this embodiment include glycol ethers. The glycol ether is not particularly limited, and examples thereof include monoalkyl ether and polyalkyl ether of glycol selected from ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol and tripropylene glycol. Of these, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, and dipropylene glycol monopropyl ether are preferable.

  The content of glycol ether in the sublimation transfer ink according to this embodiment is preferably 0.5 to 5% by mass, and preferably 1 to 3% by mass with respect to the total mass (100% by mass) of the sublimation transfer ink. Is more preferable. When the content of the glycol ether is within the above range, the drying property on the intermediate transfer medium tends to be more excellent.

[Sublimation dye]
The sublimation transfer ink according to this embodiment includes a sublimation dye. Here, the “sublimation dye” is a dye having a property of sublimation by heating. The sublimable dye used in this embodiment is C.I. I. Disperse Blue 359 and C.I. I. Disperse Blue 360 is included. C. I. Disperse Blue 359 and C.I. I. Disperse Blue 360 has different regions having absorbance in the long wavelength band. Therefore, C.I. I. Disperse Blue 359 and C.I. I. By including Disperse Blue 360 at the same time, it has a wide range of absorbance in the long wavelength band, so that a black color with good color can be obtained. Further, even if the content is the same as that of the sublimation dye contained in the conventional sublimation transfer ink, it has excellent color developability, so that the discharge stability is not deteriorated and the discharge stability is excellent. Further, if the concentration of the sublimable dye is simply increased, not only the discharge stability is deteriorated but also there is a limit to the improvement of color development. In this regard, the sublimation transfer ink according to the present embodiment is different from the DB 359, 360 in C.I. I. Disperse Blue 359 and C.I. I. By including Disperse Blue 360 at the same time, the color developability is further improved.

  C. I. Disperse Blue 359 and C.I. I. The content of Disperse Blue 360 is preferably 2 to 5% by mass and more preferably 2.5 to 4% by mass with respect to the total mass (100% by mass) of the sublimation transfer ink. C. I. Disperse Blue 359 and C.I. I. When the content of Disperse Blue 360 is within the above range, color development and ejection stability tend to be more excellent.

  C. I. The content of Disperse Blue 359 is C.I. I. Disperse Blue 359 and C.I. I. 10-50 mass% is preferable with respect to the total mass (100 mass%) of Disperse Blue 360, and 20-30 mass% is more preferable. C. I. When the content of Disperse Blue 359 is within the above range, color development tends to be more excellent.

  The sublimation dye used in the present embodiment is C.I. I. Disperse Blue 359 and C.I. I. There is no particular limitation as long as it includes Disperse Blue 360. I. Disperse Brown 27 and C.I. I. It can further include at least one of Disperse Orange 25. By including such a sublimable dye, the color developability tends to be further improved.

  Furthermore, the sublimation transfer ink according to the present embodiment may include other sublimation dyes as necessary. Other sublimable dyes are not particularly limited, and examples thereof include C.I. I. Disperse Yellow 3, 7, 8, 23, 39, 51, 54, 60, 71, 86; I. Disperse Orange 1, 1: 1, 5, 20, 25: 1, 33, 56, 76; C.I. I. Disperse Brown 2; C.I. I. Disperse Red 11, 50, 53, 55, 55: 1, 59, 60, 65, 70, 75, 93, 146, 158, 190, 190: 1, 207, 239, 240; I. Bad Red 41; C.I. I. Disperse Violet 8, 17, 23, 27, 28, 29, 36, 57; C.I. I. Disperse Blue 14, 19, 26, 26: 1, 35, 55, 56, 58, 64, 64: 1, 72, 72: 1, 81, 81: 1, 91, 95, 108, 131, 141, 145; C . I. Solvent Blue 36, 63, 105, 111 etc. are mentioned. These may be used alone or in combination of two or more.

  The content of the sublimable dye is preferably 5 to 10% by mass and more preferably 6 to 8% by mass with respect to the total mass (100% by mass) of the sublimation transfer ink. When the content of the sublimable dye is 5% by mass or more, the color developability tends to be excellent. Moreover, when the content of the sublimable dye is 10% by mass or less, the discharge stability tends to be more excellent.

[Saturation C ^* ]
The chroma C ^* in the Lab display system of the recorded matter after sublimation transfer is preferably 10 or less, and more preferably 6 or less. The lower limit of the chroma C ^* is not particularly limited and is preferably as low as possible, more preferably 0. When the saturation C ^* is 10 or less, it tends to be black. The chroma C ^* can be controlled by appropriately changing the type and mixing ratio of the sublimable dye. The saturation C ^* can be measured by the method described in the examples.

In this specification, “sublimation transfer ink having a saturation C ^* of 10 or less” means that the saturation C ^* is when a transfer process is performed on a white recording medium at 200 ° C. for 60 seconds. It means a sublimation transfer ink capable of obtaining a recorded product of 10 or less. In the present specification, “white” means that L ^* is 70 or more and both the a ^* value and the b ^* value are in the range of −10 or more and 10 or less.

[Other ingredients]
The sublimation transfer ink according to the present embodiment may include components other than those described above (other components). Examples of such components include a dispersant, an antiseptic / antifungal agent, a pH adjuster, a chelating reagent, a rust preventive agent, an ultraviolet absorber, an antifoaming agent, a surface tension adjuster, and a polysiloxane compound.

(Dispersant)
The sublimation transfer ink may contain a dispersant. When the sublimation transfer ink contains a dispersant, it tends to be superior in the dispersion stability of the sublimation dye in the sublimation transfer ink. The storage stability of the sublimation transfer ink, the long-term discharge stability of the sublimation transfer ink, etc. Tend to be better.

  The dispersant is not particularly limited, and examples thereof include an anionic dispersant, a nonionic dispersant, and a polymer dispersant.

  The anionic dispersant is not particularly limited. For example, a formalin condensate of aromatic sulfonic acid, a formalin condensate of β-naphthalene sulfonic acid, a formalin condensate of alkyl naphthalene sulfonic acid, and creosote oil sulfonic acid Formalin condensates are mentioned.

  The aromatic sulfonic acid is not particularly limited, and examples thereof include alkylnaphthalene sulfonic acids such as creosote oil sulfonic acid, cresol sulfonic acid, phenol sulfonic acid, β-naphthol sulfonic acid, methyl naphthalene sulfonic acid, and butyl naphthalene sulfonic acid. , Β-naphthalenesulfonic acid and β-naphtholsulfonic acid, cresolsulfonic acid and 2-naphthol-6-sulfonic acid, ligninsulfonic acid, and the like.

  Although it does not specifically limit as a nonionic dispersing agent, For example, the ethylene oxide addition product of a phytosterol, the ethylene oxide addition product of a cholestanol, etc. are mentioned.

  The polymer dispersant is not particularly limited, and examples thereof include polyacrylic acid partial alkyl esters, polyalkylene polyamines, polyacrylates, styrene-acrylic acid copolymers, and vinyl naphthalene-maleic acid copolymers. .

(Antiseptic and antifungal agent)
The ink for sublimation transfer can contain an antiseptic / antifungal agent. Examples of the antiseptic / antifungal agent include, but are not limited to, organic sulfur compounds, organic nitrogen sulfur compounds, organic halogen compounds, haloallyl sulfone compounds, iodopropargyl compounds, N-haloalkylthio compounds, benzoates, and the like. Thiazole compounds, nitrile compounds, pyridine compounds, 8-oxyquinoline compounds, isothiazoline compounds, dithiol compounds, pyridine oxide compounds, nitropropane compounds, organotin compounds, phenol compounds, quaternary ammonium salts Compounds, triazine compounds, thiadiazine compounds, anilide compounds, adamantane compounds, dithiocarbamate compounds, brominated indanone compounds, benzyl bromacetate compounds, and inorganic salt compounds.

  Although it does not specifically limit as an organic halogen type compound, For example, pentachlorophenol sodium etc. are mentioned.

  Although it does not specifically limit as a pyridine oxide type compound, For example, sodium pyridine thione-1-oxide, zinc pyridine thione-1-oxide, etc. are mentioned.

  The isothiazoline-based compound is not particularly limited, and examples thereof include 1-benzisothiazolin-3-one amine salt, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one magnesium chloride, 5-chloro-2-methyl-4-isothiazolin-3-one calcium Chloride, 2-methyl-4-isothiazolin-3-one calcium chloride, and the like.

  Other antiseptic / antifungal agents include sodium dehydroacetate, sodium sorbate, sodium benzoate and the like.

(PH adjuster)
The sublimation transfer ink may contain a pH adjusting agent. When the sublimation transfer ink contains a pH adjuster, the storage stability of the sublimation transfer ink tends to be more excellent.

  Although it does not specifically limit as a pH adjuster, For example, what can control pH of the ink for sublimation transfer to the range of 6.0 or more and 11.0 or less can be used suitably. Examples of such pH adjusters include, but are not limited to, alkanolamines such as diethanolamine, triethanolamine, dimethylethanolamine, and diethylethanolamine; lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium hydroxide, and the like. Alkali metal hydroxides; ammonium hydroxide; alkali metal carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate; aminosulfonic acids such as taurine; and the like.

(Chelating reagent)
The sublimation transfer ink may contain a chelating reagent. Although it does not specifically limit as a chelating reagent, For example, ethylenediaminetetraacetic acid disodium, nitrilotriacetic acid sodium, hydroxyethylethylenediamine triacetic acid sodium, diethylenetriamine pentaacetic acid sodium, uracil diacetic acid sodium etc. are mentioned.

(Rust inhibitor)
The sublimation transfer ink can contain a rust inhibitor. Although it does not specifically limit as a rust preventive agent, For example, acidic sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite, a benzotriazole type compound etc. are mentioned, for example.

(UV absorber)
The ink for sublimation transfer can contain an ultraviolet absorber. The ultraviolet absorber is not particularly limited. For example, a benzophenone compound, a cinnamic acid compound, a triazine compound, a stilbene compound, a so-called fluorescent whitening agent (absorbing ultraviolet rays represented by benzoxazole compounds, And the like).

(Defoamer)
The ink for sublimation transfer can contain an antifoaming agent. Although it does not specifically limit as an antifoamer, For example, a highly oxidized oil type compound, a glycerol fatty acid ester type compound, a fluorine type compound, a silicone type compound, an acetylene type compound etc. are mentioned.

(Surface tension regulator)
The ink for sublimation transfer can contain a surface tension adjusting agent. Although it does not specifically limit as a surface tension regulator, For example, surfactant is mentioned. Although it does not specifically limit as surfactant, For example, anionic surfactant, an amphoteric surfactant, a cationic surfactant, a nonionic surfactant, etc. are mentioned.

  The anionic surfactant is not particularly limited, and examples thereof include alkyl sulfocarboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and salts thereof, and N-acylmethyl taurate salts. , Alkyl sulfate polyoxyalkyl ether sulfate, alkyl sulfate polyoxyethylene alkyl ether phosphate, rosin acid soap, castor oil sulfate ester, lauryl alcohol sulfate ester, alkylphenol type phosphate ester, alkyl type phosphate ester, alkylaryl Examples include sulfonates, diethylsulfosuccinate, diethylhexylsylsulfosuccinate, dioctylsulfosuccinate and the like.

  Examples of amphoteric surfactants include, but are not limited to, for example, lauryl dimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctyl Examples include polyaminoethylglycine and other imidazoline derivatives.

  Although it does not specifically limit as a cationic surfactant, For example, a 2-vinyl pyridine derivative, a poly 4-vinyl pyridine derivative, etc. are mentioned.

  The nonionic surfactant is not particularly limited, and examples thereof include polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene dodecyl phenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene Ether surfactants such as ethylene alkyl ether; polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate , Ester surfactants such as polyoxyethylene stearate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl Le 4-octyne-3,6-diol, 3,5-dimethyl-1-hexyne-3-acetylene glycol surface active agents such as all-like.

  The ink for sublimation transfer can contain a polysiloxane compound. When the sublimation transfer ink contains a polysiloxane compound, the ejection stability of the ejected ink droplets can be improved. Examples of the polysiloxane compound include polyether-modified siloxane and polyether-modified polydimethylsiloxane.

(surface tension)
The surface tension (surface tension at 25 ° C.) of the sublimation transfer ink is preferably 20 mN / m or more and 50 mN / m or less, and more preferably 25 mN / m or more and 40 mN / m or less. The surface tension of the ink for sublimation transfer can be determined by measurement according to JIS K3362 using a surface tension meter CBVP-A3 (manufactured by Kyowa Interface Science Co., Ltd.). When the surface tension is within the above range, the ejection stability tends to be superior.

(viscosity)
Further, the viscosity (viscosity at 25 ° C.) of the sublimation transfer ink is preferably 2.0 mPa · s or more and 20 mPa · s or less. When the viscosity is within the above range, the discharge stability of the sublimation transfer ink tends to be more excellent. The viscosity of the sublimation transfer ink can be determined by measurement in accordance with JIS Z8809 using a vibration viscometer.

〔Recording method〕
Next, a recorded matter recording method using the sublimation transfer ink according to the present embodiment will be described. The recording method is not particularly limited. For example, an ink application process for applying the sublimation transfer ink according to the present embodiment to the intermediate transfer medium by an inkjet method, and heating the intermediate transfer medium to which the sublimation transfer ink has been applied. And a transfer step of transferring a sublimation dye constituting the sublimation transfer ink to a recording medium. Thereby, it is possible to provide a method for recording a recorded matter using the sublimation transfer ink, which can record the recorded matter with high productivity. Hereinafter, each step will be described in detail.

(Ink application process)
In the ink application process, the sublimation transfer ink according to the present embodiment is applied to the intermediate transfer medium by an ink jet method. The ink for sublimation transfer by the inkjet method can be discharged using a known inkjet recording apparatus. As a discharging method, a piezo method, a method of discharging ink by bubbles generated by heating the ink, or the like can be used. Among these, the piezo method is preferable from the viewpoint of the difficulty of alteration of the sublimation transfer ink.

  In the ink application process, a sublimation transfer ink other than the sublimation transfer ink according to the present embodiment may be used. Thereby, for example, the color gamut that can be expressed can be made wider.

(Intermediate transfer medium)
The intermediate transfer medium is not particularly limited, and for example, paper such as plain paper, a recording medium provided with an ink receiving layer (referred to as ink jet dedicated paper, coated paper, or the like) can be used. Among these, paper having an ink receiving layer made of inorganic fine particles such as silica is preferable. This makes it possible to obtain an intermediate transfer medium in which bleeding or the like is suppressed in the process of drying the sublimation transfer ink applied to the intermediate transfer medium. Further, in the subsequent transfer process, the sublimation dye can be sublimated more smoothly. Tend to progress.

(Transfer process)
Thereafter, the intermediate transfer medium to which the sublimation transfer ink is applied is heated to transfer the sublimation dye constituting the sublimation transfer ink to the recording medium. Thereby, a recorded matter is obtained.

  The heating temperature in this step is preferably 160 ° C. or higher and 220 ° C. or lower, and more preferably 170 ° C. or higher and 200 ° C. or lower. When the heating temperature is within the above range, the energy required for transfer can be reduced, and the productivity of recorded matter tends to be superior. Further, the color development of the obtained recorded matter tends to be more excellent.

  Although the heating time in this step depends on the heating temperature, it is preferably 30 seconds or longer and 90 seconds or shorter, and more preferably 45 seconds or longer and 60 seconds or shorter. When the heating time is within the above range, energy required for transfer can be reduced, and the productivity of recorded matter tends to be excellent. Further, the color development of the obtained recorded matter tends to be more excellent.

  In addition, this step may be performed by heating the surface of the intermediate transfer medium to which the sublimation transfer ink has been applied while being opposed to the recording medium at a predetermined interval. It can also be performed by heating in a state in which the medium is in close contact. Among these, it is preferable to perform the heating by heating the intermediate transfer medium and the recording medium in close contact with each other. Thereby, the energy required for the transfer can be reduced, and the productivity of recorded matter tends to be superior. Further, the color development of the obtained recorded matter tends to be more excellent.

(Recording medium)
Although it does not specifically limit as a recording medium, For example, a cloth (hydrophobic fiber cloth etc.), a resin (plastic) film, paper, glass, a metal, ceramics etc. are mentioned. Further, as the recording medium, a material having a three-dimensional shape such as a sheet shape, a spherical shape or a rectangular parallelepiped shape may be used.

  When the recording medium is a fabric, the fiber constituting the fabric is not particularly limited. For example, polyester fiber, nylon fiber, triacetate fiber, diacetate fiber, polyamide fiber, and two or more of these fibers are used. Examples include blended products. Moreover, you may use the blended products of these with regenerated fibers, such as rayon, or natural fibers, such as cotton, silk, and wool.

  In addition, when the recording medium is a resin (plastic) film, the resin (plastic) film that can be used is not particularly limited, and examples thereof include a polyester film, a polyurethane film, a polycarbonate film, a polyphenylene sulfide film, a polyimide film, and a polyamideimide. A film etc. are mentioned. The resin (plastic) film may be a laminate in which a plurality of layers are laminated, or may be composed of a gradient material in which the composition of the material changes in a gradient manner.

(Other processes)
In addition to the steps as described above, there may be other steps (a pretreatment step, an intermediate treatment step, a post treatment step).
Although it does not specifically limit as a pre-processing process, For example, the process of apply | coating a coat layer to a recording medium is mentioned.
The intermediate processing step is not particularly limited, and examples thereof include a step of preheating the recording medium.
The post-processing step is not particularly limited, and examples thereof include a step of cleaning the recording medium.

  Further, the sublimation transfer ink according to the present embodiment can be suitably used in sublimation transfer without using an intermediate transfer medium. Sublimation transfer without using an intermediate transfer medium is not particularly limited. For example, sublimation according to the present embodiment is applied to an ink receiving layer of a recording medium (film product or the like) provided with a peelable ink receiving layer by an inkjet method. The recording medium provided with the step of applying the transfer ink and the ink receiving layer provided with the sublimation transfer ink is heated as it is, and sublimation diffusion dyeing is performed from the ink receiving layer to the recording medium on the lower layer side. And a method having a step and a step of peeling off the ink receiving layer from the recording medium to obtain a recorded matter.

[Recorded material]
Next, a recorded matter obtained from the sublimation transfer ink according to this embodiment will be described. The recorded matter is recorded using the sublimation transfer ink according to the present embodiment as described above. Accordingly, it is an object to provide a recorded matter having excellent color developability.

  Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples. The present invention is not limited in any way by the following examples.

[Material for ink for sublimation transfer]
The main materials of the sublimation transfer ink used in the following examples and comparative examples are as follows.
[Sublimation dye]
DB359 (CI Disperse Blue 359)
DB360 (CI Disperse Blue 360)
DO25 (CI Disperse Orange 25)
DBr27 (CI Disperse Brown 27)
DY54 (CI Disperse Yellow 54)
DR60 (CI Disperse Red 60)
[Dispersant]
NS (formalin condensate of β-naphthalenesulfonic acid (anionic dispersant))
[Surfactant]
BYK348 (manufactured by Big Chemie Japan)
(Water-soluble organic solvent)
GL (glycerin)
TEGMME (Triethylene glycol monomethyl ether)

[Preparation of ink for sublimation transfer]
Each material was mixed with the composition shown in Table 1 below, sufficiently stirred, and the insoluble matter was removed with a filter to obtain each sublimation transfer ink. In Table 1 below, the unit of numerical values is part by mass, and the total is 100 parts by mass.

[Recording Method (Examples 1-4, Comparative Examples 1-4)]
Each sublimation transfer ink obtained above was filled in an ink cartridge, and the ink cartridge was mounted on an ink jet printer (PX-G930, manufactured by Seiko Epson Corporation). Thereafter, using a printer driver, the printer head was filled with sublimation transfer ink, and it was confirmed that there was no clogged nozzle and normal recording was possible. Using this ink jet printer, each of the sublimation transfer inks was ejected, and a solid pattern was adhered to TRANSJET Classic (Cham Paper), which is an intermediate transfer medium, at a recording resolution of 1440 × 720 dpi. The operating environment of the printer was 40 ° C. and 20 RH%.

  Thereafter, the sublimation transfer ink adhering side of the intermediate transfer medium is brought into close contact with a white recording medium fabric (100% polyester, Amina, manufactured by Toray Industries, Inc.), and in this state, a heat press machine (TP-608M, manufactured by Taiyo Seiki Co., Ltd.). ) Was used at 200 ° C. for 60 seconds to perform sublimation transfer, and each recorded matter was obtained.

[Evaluation]
[Color development (OD value)]
Each recorded matter was evaluated for color developability. Specifically, with respect to each obtained recorded matter, the OD value of Black was measured using a colorimeter (Gretag Macbeth Spectrolino, manufactured by X-Rite), and the evaluation standard was based on the obtained OD value. The color development was evaluated. The results are shown in Table 2.
(Evaluation criteria)
A: OD value is 1.62 or more B: OD value is 1.61 or more and less than 1.62 C: OD value is 1.60 or more and less than 1.61 D: OD value is less than 1.60

[Blackness]
Each recorded matter was evaluated for blackness. Specifically, for each recorded matter obtained, color measurement of a ^* value b ^* value was performed using a colorimeter (Gretag Macbeth Spectrolino, manufactured by X-Rite), and C ^* = (a ^* + b ^* ) C ^* was calculated by ^{1/2 and} evaluated according to the following criteria. The results are shown in Table 2.
(Evaluation criteria)
A: C ^* is 10 or less B: C ^* exceeds 10

(Discharge stability)
Each sublimation transfer ink obtained above was filled in an ink cartridge and mounted on an ink jet printer (PX-G930, manufactured by Seiko Epson Corporation). Thereafter, using a printer driver, the printer head was filled with sublimation transfer ink, and it was confirmed that there was no clogged nozzle and normal recording was possible.

  Ink droplets were ejected to any point A on TRANSJET Classic (Cham Paper), which is an intermediate transfer medium, to obtain ejection pattern 1. Next, after the carriage is driven for 4.3 seconds without ink being ejected, ink droplets are ejected again at an arbitrary point A on TRANSJET Classic (Cham Paper), which is an intermediate transfer medium, to obtain an ejection pattern 2 It was. The operating environment of the printer was 40 ° C. and 20 RH%.

By comparing the discharge pattern 1 and the discharge pattern 2 attached to the intermediate transfer medium, the amount of deviation of the landing position of the ink droplets was measured with an optical microscope and evaluated according to the following evaluation criteria. The results are shown in Table 2.
A: Deviation amount is less than 80 μm B: Deviation amount is 80 μm or more and less than 120 μm C: Deviation amount is 120 μm or more

  Compared to the examples, C.I. I. It was found that Comparative Examples 1 and 4 containing only Disperse Blue 359 were inferior in color development. In addition, C.I. I. In Comparative Example 4 containing more Disperse Blue 359, it was shown that the discharge stability (intermittent characteristics) also deteriorated. In addition, C.I. I. It was found that Comparative Examples 2 and 3 containing only Disperse Blue 360 were inferior in color development.

Claims (6)

Water, a water-soluble organic solvent, and a sublimable dye,
The sublimable dye is C.I. I. Disperse Blue 359 and C.I. I. An ink for sublimation transfer, including Disperse Blue 360.   C. I. Disperse Brown 27 and C.I. I. The sublimation transfer ink according to claim 1, further comprising at least one of Disperse Orange 25. The ink for sublimation transfer according to claim 1 or 2, wherein a chroma C ^* in a Lab display system is 10 or less in a recorded matter after sublimation transfer.   The sublimation dye content according to any one of claims 1 to 3, wherein a content of the sublimation dye is 5.0 to 10% by mass with respect to 100% by mass of the total mass of the sublimation transfer ink. ink.   The sublimation transfer ink according to any one of claims 1 to 4, wherein the water-soluble organic solvent contains at least one of glycerin and alkylene glycol.   The sublimation transfer ink according to claim 5, wherein a total content of the glycerin and the alkylene glycol is 10% by mass or more with respect to a total mass of 100% by mass of the sublimation transfer ink.