JP2024035567A - Recording medium and method for producing recorded matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium capable of achieving both excellent dyeability in sublimation transfer and high friction fastness of the formed image on a base material of various materials and a method for producing a recorded matter.

SOLUTION: There is provided a method for producing a recorded matter which comprises the steps of: imparting a curable ink containing a polymerizable compound on a base material; curing the polymerizable compound by irradiating the curable ink imparted on the base material with an active energy ray to form a coloring material receiving layer; and forming the image by sublimation transfer of an intermediate image formed on a transfer sheet within the area where the coloring material receiving layer is formed on the base material, wherein the polymerizable compound includes a polymerizable compound having 3 or more polymerizable functional groups and the content, molecular weight and the number of polymerizable functional groups of the polymerizable compound satisfy a specific relationship.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a recording medium and a method for manufacturing a recorded material.

2. Description of the Related Art A sublimation transfer method using a sublimation dye and a transfer sheet is known for forming images on clothing made of polyester or the like. An intermediate image is formed on the transfer sheet using, for example, an inkjet recording method, and then the clothing and the transfer sheet are heat-pressed together, so that the sublimation dye on the transfer sheet is sublimated and transferred to the clothing.
Sublimation transfer using this sublimation dye can basically dye polyester fibers, but it is said that it cannot dye other fiber types.

Patent Document 1 describes an aqueous inkjet composition containing both a sublimation dye and particles made of a material containing polyester. In the aqueous inkjet composition described in Patent Document 1, particles made of a material containing polyester can contain a sublimation dye. Therefore, Patent Document 1 describes that sufficiently excellent color development can be ensured for various recording media even by heat treatment at a relatively low temperature and for a short time.

JP2020-158645A

Even when using the aqueous inkjet composition described in Patent Document 1, in order to achieve both dyeability when applied to fiber types other than polyester fibers and abrasion fastness of the formed image, Further consideration was required.

The present invention has been made in view of the above problems. That is, an object of the present invention is to manufacture a recording medium and a recorded product that can achieve both excellent dyeing properties in sublimation transfer and high friction fastness of formed images for various base materials. The purpose is to provide a method.

A method for producing a recorded material according to one aspect of the present invention is a method for producing a recorded material having a base material and an image formed on the base material, the method comprising: forming a polymerizable compound on the base material; a step of applying a curable ink containing the curable ink, and a step of curing the polymerizable compound to form a colorant-receiving layer by irradiating the curable ink applied to the base material with active energy rays; forming the image by sublimation-transferring an intermediate image formed on the transfer sheet into a region on the base material in which the colorant-receiving layer is formed, contains a polymerizable compound having three or more polymerizable functional groups, and when the number of types of the polymerizable compound contained in the curable ink is n, n is an integer of 1 or more; For each of the polymerizable compounds, the product AB of the content A (mass%) of the polymerizable compound based on the mass of the entire curable ink and the molecular weight B of the polymerizable compound is calculated, and Let S _AB be the sum of the products AB obtained for the polymerizable compounds, and for each of the n types of polymerizable compounds, the content A (% by mass) and the polymerizable functional group that the polymerizable compounds have When the product AC with the number C is calculated and the sum of the products AC obtained for the n types of polymerizable compounds is S _AC , the value obtained by dividing S _AB by S _AC is 200 or more. , is characterized by.

Further, a recording medium according to another aspect of the present invention includes a base material and a colorant receiving layer provided on the base material, and the colorant receiving layer includes a curable ink containing a polymerizable compound. is a cured product, the polymerizable compound includes a polymerizable compound having three or more polymerizable functional groups, and when the number of types of the polymerizable compound contained in the curable ink is n,
n is an integer of 1 or more, and for each of the n types of polymerizable compounds, the content A (mass%) of the polymerizable compound based on the total mass of the curable ink, and the content of the polymerizable compound The product AB with the molecular weight B is calculated, and the sum of the products AB obtained for the n types of polymerizable compounds is defined as _SAB , and the content A (mass% ) and the number C of polymerizable functional groups that the polymerizable compound has, and when the sum of the products AC obtained for n types of the polymerizable compounds is S _AC , S _AB is It is characterized in that the value obtained by dividing by S _AC is 200 or more.

According to the present invention, there is provided a recording medium and a method for manufacturing a recorded material that can achieve both excellent dyeing properties in sublimation transfer and high friction fastness of formed images for various base materials. provided.

FIG. 1 is a schematic diagram showing an example of a method for manufacturing a recorded matter according to the present invention. 1 is a schematic diagram illustrating an example of the configuration of an inkjet recording apparatus used in a method for producing a recorded matter according to the present invention.

Hereinafter, the present invention will be described in detail by citing preferred embodiments. Physical property values are values at room temperature (25° C.) unless otherwise specified.

FIG. 1 is a schematic diagram showing an example of a method for manufacturing a recorded matter according to the present invention.
In the method for manufacturing a recorded material according to the present invention, first, a base material 11 is prepared (FIG. 1(a)). A curable ink 12 containing a polymerizable compound is applied onto the prepared base material 11 (FIG. 1(b)). Subsequently, the curable ink 12 applied to the base material 11 is irradiated with active energy rays (not shown) to cure the polymerizable compound and form the colorant receiving layer 13 (FIG. 1(c)). Next, a desired intermediate image 15 formed by sublimation dye on the transfer sheet 14 is sublimated and transferred into the area on the base material 11 where the colorant receiving layer 13 is formed to form an image (see FIG. 1). d)). Sublimation transfer can be performed by stacking the transfer sheet 14 on the base material 11 and hot pressing. Finally, printing is achieved by peeling the transfer sheet 14 from the base material 11, and a recorded matter in which the image 16 is formed on the colorant receiving layer 13 on the base material 11 is manufactured (FIG. 1(e)). .
Further, the recording medium according to the present invention has a base material 11 and a colorant receiving layer 13 provided on the base material 11, and the colorant receiving layer 13 is a curable ink 12 containing a polymerizable compound. It is a cured product.
The curable ink 12 is preferably applied onto the base material 11 by being ejected from an inkjet recording head.

<Curable ink>
The curable ink is an active energy ray curable ink containing a polymerizable compound.

(Polymerizable compound)
The curable ink contains a polymerizable compound having three or more polymerizable functional groups.
When the number of types of polymerizable compounds contained in the curable ink is defined as n, n is an integer of 1 or more, and the n types of polymerizable compounds satisfy the following conditions.
That is, for each of the n types of polymerizable compounds, the product AB of the content A (mass %) of the polymerizable compound based on the mass of the entire curable ink and the molecular weight B of the polymerizable compound is calculated. Then, the sum of the products AB obtained for n types of polymerizable compounds is defined as _SAB .
Further, for each of the n types of polymerizable compounds, the product AC of the content A (% by mass) and the number C of polymerizable functional groups that the polymerizable compound has is calculated. Then, the sum of the products AC obtained for n types of polymerizable compounds is defined as S _AC .
At this time, the value obtained by dividing S _AB by S _AC is 200 or more.

That is, the content, molecular weight, and number of functional groups of n types of polymerizable compounds satisfy the following formula (1).
{A(1)×B(1)+...+A(n)×B(n)}/{A(1)×C(1)+...+A(n)×C(n)}≧ 200 (1)
(In formula (1), A(1), ..., A(n) each indicate the content (mass%) of each polymerizable compound based on the mass of the entire curable ink. (1), ..., B(n) respectively indicate the molecular weight of each polymerizable compound. Also, C(1), ..., C(n) respectively indicate the molecular weight of each polymerizable compound. (indicates the number)

The content of the polymerizable compound having three or more polymerizable functional groups in the curable ink is preferably 5% by mass or more and 50% by mass or less based on the total mass of the curable ink.
As the polymerizable compound, a polymerizable compound having radical polymerizability of unsaturated double bonds such as acrylic or a polymerizable compound having cationic polymerizability such as epoxy can be used.
The molecular weight of the polymerizable compound is preferably 5,000 or less, more preferably 3,000 or less, and particularly preferably 1,000 or less. When the molecular weight of the polymerizable compound is within the above range, when ejecting the curable ink from an inkjet recording head, it is possible to achieve both ejection performance and cured film properties at a higher level.

When the curable ink contains water, the polymerizable compound is preferably water-soluble. The water-soluble polymerizable compound preferably contains an acrylamide compound. Commercial products of water-soluble polymerizable compounds include the following trade names: FAM-201 (water-soluble bifunctional acrylamide), FAM-301 (water-soluble trifunctional acrylamide), FAM-401 (water-soluble tetrafunctional acrylamide), and FAM-402 (water-soluble tetrafunctional acrylamide) (both manufactured by Fuji Film).

Specific examples of water-insoluble polymerizable compounds include acryloylmorpholine, N-vinylpyrrolidone, acrylamide, hydroxyethyl acrylamide, methylenebisacrylamide, monoacrylic ester of oligoethylene oxide, and monoacrylic ester of dibasic acid. etc. can be mentioned.

(Other ingredients)
The curable ink may contain other components such as a surfactant, a curing accelerator, a water-soluble auxiliary agent, and a viscosity modifier.

(Polymerization initiator)
The curable ink may contain a polymerization initiator. As the polymerization initiator, for example, a compound that generates an active species that initiates curing (polymerization) of a curable substance having a ketone structure by giving and receiving light can be used. Among these, in the case of a curable substance having a ketone structure, the curing reaction significantly progresses due to the generation of radicals, so it is preferable to use a polymerization initiator that generates radicals by giving and receiving light.
The polymerization initiator is preferably a compound having a hydrophilic group. Examples of the hydrophilic group include a hydroxyl group, a carboxylic acid group, a sulfonic acid group, a phosphoric acid group, a carboxylic acid group, a sulfonic acid group, a phosphoric acid group, an ether group, and an amide group.
When the curable ink contains a coloring material having an anionic group, it is preferable to use a polymerization initiator that does not have an ester group in order to suppress hydrolysis.

Specific examples of the polymerization initiator include compounds represented by the following structural formulas (A) to (C) (polymerization initiators A to C). Polymerization initiator A is an example of an acylphosphine-based active energy ray polymerization initiator. Polymerization initiator B is an example of an α-hydroxyketone active energy ray polymerization initiator. Moreover, the polymerization initiator C is an example of a thioxanthone-based active energy ray polymerization initiator. In addition, in the examples described later, polymerization initiator A was used.

The content of the polymerization initiator in the curable ink is preferably 0.01% by mass or more and 20% by mass or less, based on the mass of the entire curable ink. Further, it is more preferably 0.01% by mass or more and 10% by mass or less, and particularly preferably 0.01% by mass or more and 5% by mass or less. If the amount of the polymerization initiator is too large, unreacted polymerization initiator tends to remain in the cured film, which may reduce the strength of the cured film.
Note that it is also possible to use a polymerization initiator and a sensitizer together, or to use two or more types of polymerization initiators together. In the present invention, the curable ink preferably contains a polymerization initiator in an amount of 15% by mass or more based on the total mass of the polymerizable compounds contained in the curable ink.

(solvent)
Preferably, the curable ink is an aqueous ink containing water as the main solvent. The content of water in the curable ink is preferably 30% by mass or more, more preferably 50% by mass or more, based on the mass of the entire curable ink.
Further, the curable ink may further contain various organic solvents for the purpose of improving various performances and as long as the original characteristics are not impaired. For example, certain organic solvents can impart non-volatility to inks. Further, various organic solvents can be included in the curable ink for the purpose of adjusting viscosity, adjusting surface tension, imparting wettability to the base material, and the like.

Examples of organic solvents include glycol ethers such as ethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol monomethyl ether, and propylene glycol monomethyl ether; monohydric alcohols such as methanol, ethanol, propanol, butanol, and pentanol; etc. can be mentioned.

Further, for the purpose of improving the friction fastness and adhesion of the image, the curable ink may contain an organic solvent in the form of an emulsion that is emulsified and dispersed in a solvent such as water. When the organic solvent is contained in the curable ink as an emulsion, the content of the organic solvent in the curable ink is preferably 30% by mass or less based on the mass of the entire curable ink.

(Additive)
The curable ink may contain a white pigment. For example, when the base material has a color other than white, the curable ink contains a white pigment, thereby forming a white colorant-receiving layer, and the color of the base material is hidden by the white colorant-receiving layer. Thereby, it is possible to suppress the image that is subsequently sublimation-transferred from the intermediate image on the transfer sheet from being influenced by the color of the base material.
As the white pigment, various known pigments used in white ink can be used, such as titanium oxide, zinc white, lead white, zirconium oxide, zirconium silicate, aluminum oxide, lithopone, calcium carbonate, and hollow fine particles. .

Additionally, the curable ink may contain resins such as polyester, polyurethane, polyacrylic, cycloolefin, polypropylene, polystyrene, polyacrylamide, and polyamide. The resin may be a water-soluble resin or may be contained in the curable ink in a dispersed state as an emulsion. By containing the resin in the curable ink, the abrasion fastness of the image in the colorant receiving layer can be improved.

<Base material>
As the base material, cloths and films made of various materials can be used. Specifically, as the base material, for example, cotton, linen, silk, wool, rayon, polyester, nylon, acrylic, etc., and blends thereof can be used.
It is preferable that at least the surface of the base material on which the colorant receiving layer is formed has a softening point or decomposition temperature of 140° C. or higher.
The shape of the base material is not particularly limited, and may be, for example, a cut paper shape, a roll-to-roll shape, a drum shape, or the like.

<Formation of colorant receiving layer>
The coloring material receiving layer is formed by applying a curable ink onto a base material and then irradiating the curable ink with active energy rays to cure the curable ink. A colorant-receiving layer is formed on the substrate at least in the area where an image is to be formed using the sublimation dye.
The method for applying the curable ink onto the substrate is preferably an inkjet method in which it is ejected from an inkjet recording head, but is not limited thereto. Methods for applying the curable ink onto the substrate include, for example, methods using various coaters such as slit coaters, bar coaters, and spin coaters; spray methods; dip methods; and letterpress (letterpress), intaglio (gravure), It is possible to appropriately select from among various printing methods such as lithography (offset) and stencil (silk screen).
When used as an aqueous inkjet ink, the curable ink is suitable for use in an inkjet recording apparatus equipped with a recording head that ejects ink by the action of thermal energy. On the other hand, the curable ink may be ejected using a recording head that ejects ink using a piezo system. Further, it is suitable as a liquid contained in a cartridge (liquid cartridge) having a liquid storage portion, and as a liquid for filling the liquid cartridge.

Since the colorant receiving layer plays a role as a medium for forming an image using sublimation dye, the thickness is preferably 0.1 μm or more and 50 μm or less, and more preferably 0.5 μm or more and 30 μm or less. .

Examples of active energy rays used to cure the curable ink include electron beams, ultraviolet rays (UV), α rays, β rays, γ rays, and X rays. Among these, UV is preferred.
The UV integrated intensity required to cure the curable ink is preferably about 300 to 5,000 mJ/cm ² as a total amount of UV energy. Further, the peak illuminance is preferably 100 mW/cm ² or more and 3,000 mW/cm ² or less.
The irradiation of the curable ink with active energy rays is preferably carried out immediately after the curable ink is applied to the base material.

(Inkjet recording device)
The inkjet recording device used to form the colorant receiving layer includes a recording head that discharges curable ink using an inkjet method. The inkjet method is a method that ejects curable ink by applying thermal energy, which can easily realize a high-density multi-orifice recording head and form a high-resolution and high-quality colorant-receiving layer at high speed. preferable.

Examples of recording heads that eject curable ink by applying thermal energy include the basic recording heads disclosed in U.S. Pat. Nos. 4,723,129 and 4,740,796. It is preferable to use the same principle. Such a method is applicable to both so-called on-demand type and continuous type. In the case of the on-demand type, a rapid temperature rise exceeding nucleate boiling that corresponds to the recorded information is applied to the electrothermal transducer placed corresponding to the sheet holding the curable ink or the liquid path. Preferably, at least one drive signal is applied. This causes the electrothermal transducer to generate thermal energy and cause film boiling on the heat-active surface of the recording head, resulting in a one-to-one response to this drive signal and the formation of bubbles in the curable ink. It is effective because it can be done.

Growth and contraction of the bubble causes curable ink to be ejected from the outlet to form at least one drop. It is preferable to use this drive signal in a pulse form because the bubbles grow and contract immediately and appropriately, and the curable ink can be ejected with particularly good responsiveness. Suitable pulse-shaped drive signals are those described in US Pat. No. 4,463,359 and US Pat. No. 4,345,262. Note that it is preferable to adopt the conditions regarding the rate of temperature increase of the heat acting surface described in US Pat. No. 4,313,124.

A suitable configuration for the recording head is a combination configuration of an ejection port, a liquid path, and an electrothermal converter (a linear liquid flow path or a right-angled liquid flow path) as disclosed in each of the above-mentioned specifications. In addition, the configurations disclosed in U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,459,600, in which the heat acting portion is disposed in a bending region, are also suitable. Furthermore, the atmospheric communication type discharge methods described in Japanese Patent No. 2962880, Japanese Patent No. 3246949, and Japanese Patent Application Laid-Open No. 11-188870 are also effective. In addition, a configuration in which a common discharge hole is used as a discharge part of a plurality of electrothermal transducers (Japanese Patent Application Laid-Open No. 59-123670, etc.) is also effective.

As a full-line type recording head having a length corresponding to the width of the maximum substrate that can be recorded by the recording apparatus, the following can be used. For example, the length may be satisfied by a combination of a plurality of recording heads as disclosed in the above specification, or a single recording head formed integrally may be used. Furthermore, when installed in a recording device, there is a replaceable chip-type recording head that enables electrical connection with the device body and supply of curable ink from the device body, and a chip-type recording head that is installed integrally with the recording head. A cartridge type recording head is also effective.

It is also preferable to add recording head recovery means, preliminary auxiliary means, and the like. Specifically, the capping means, cleaning means, pressure or suction means, electrothermal transducer, heating element, preliminary heating means, preliminary ejection mode, etc. of the recording head can be mentioned.

FIG. 2 is a perspective view schematically showing an example of the configuration of an inkjet recording apparatus. The inkjet recording apparatus shown in FIG. 2 is a recording apparatus that employs a shuttle system in which a short serial head is used to perform recording while scanning the head in the width direction of a base material. The carriage 100 is connected to an endless belt 101 and is movable along a guide shaft 102. Endless belt 101 is stretched between pulleys 103 and 104. A drive shaft of a motor 105 is connected to the pulley 103 . Therefore, the carriage 100 reciprocates in the main scanning direction of arrow A along the guide shaft 102 by the rotational drive of the motor 105.

Mounted on the carriage 100 are a recording head (not shown) in which a plurality of ink ejection nozzles are arranged in parallel, and an ink tank IT serving as a container for storing curable ink. Further, the carriage 100 includes an active energy ray irradiation unit 20 at at least one end of the carriage 100 in the main scanning direction A. Therefore, immediately after applying the curable ink onto the base material, it is possible to irradiate the active energy ray from the active energy ray irradiation section 20 onto the surface of the base material to which the curable ink has been applied.

In the recording head, a plurality of ink ejection orifices are formed on the ejection orifice surface facing the substrate P and are arranged in the conveyance direction of the substrate P (sub-scanning direction of arrow B). The recording head is provided with an ink path that communicates with each of the plurality of ejection ports. An electrothermal transducer that generates thermal energy for ejecting the curable ink is provided corresponding to each ink path.
The electrothermal converter generates heat by applying electric pulses according to drive data, causes film boiling in the curable ink by the heat, and releases the curable ink from the ejection port as bubbles are generated. Let it spit out. A common liquid chamber communicates with each ink path, and the common liquid chamber is connected to the ink tank IT.

The inkjet recording apparatus shown in FIG. 2 is provided with a linear encoder 106 for detecting the moving position of the carriage 100. That is, the linear scale 107 provided along the moving direction of the carriage 100 has, for example, 1,200 slits formed at equal intervals of one inch. On the other hand, on the carriage 100 side, for example, a slit detection system 108 having a light emitting section and a light receiving sensor and a signal processing circuit are provided. Therefore, according to the movement of the carriage 100, the linear encoder 106 outputs an ejection timing signal indicating the timing to eject the curable ink and information on the movement position of the carriage 100. By discharging the curable ink each time a slit of the linear scale 107 is detected, a colorant receiving layer with a resolution of 1,200 dpi in the main scanning direction can be formed.
The base material P is intermittently conveyed in the sub-scanning direction of arrow B, which is orthogonal to the operating direction of the carriage 100. The base material P is supported by a pair of roller units 109 and 110 on the upstream side in the conveyance direction and a pair of roller units 111 and 112 on the downstream side in the conveyance direction. Then, a certain tension is applied to the recording head, and the recording head is conveyed while ensuring flatness with respect to the recording head. The driving force for the roller units 111 and 112 is supplied from a base material conveyance motor (not shown).

In the inkjet recording apparatus shown in FIG. 2, while moving the carriage 100, printing with a width corresponding to the array width of the ejection ports of the recording head and feeding the base material P are alternately repeated, so that the entire base material P is colored. A material receiving layer can be formed. The carriage 100 stops at the home position as necessary at the start of recording or during recording. At this home position, a cap member 113 that caps the ejection surface side of each recording head is provided. A suction recovery means (not shown) is connected to the cap member 113 for forcibly absorbing the curable ink from the ejection port to prevent clogging of the ejection port.

In addition to the above-mentioned shuttle method, there is a line method that uses a line head in which recording elements are arranged over the entire side of the base material. In the line method, by scanning the base material in a direction perpendicular to the direction in which the recording elements are arranged, a colorant receiving layer can be formed on the entire surface of the base material. Therefore, a conveyance system such as a carriage for scanning the short head becomes unnecessary. Further, since complicated scanning control of the movement of the carriage and the base material is not required, and only the base material moves, the recording speed can be increased compared to the shuttle method.

<Image recording (formation of sublimation dye film)>
The sublimation dye is not particularly limited, and can be appropriately selected from conventionally known sublimation dyes. Among these, those having good properties as printing materials, such as those having sufficient color density and being resistant to discoloration and fading due to light, heat, temperature, etc., are preferred. Specifically, the sublimation dyes include diarylmethane dyes; triarylmethane dyes; thiazole dyes; merocyanine dyes; pyrazolone dyes; methine dyes; indoaniline dyes; acetophenone azomethine, pyrazoloazomethine, and imidazol azomethine. azomethine dyes such as , imidazoazomethine, and pyridone azomethine; Azo dyes such as pyridone azo, thiophene azo, isothiazole azo, pyrrole azo, pyrazole azo, imidazole azo, thiadiazole azo, triazole azo, and disazo; spiropyran dyes; indolino spiropyran dyes; fluoran dyes; rhodamine lactam dyes; Examples include naphthoquinone dyes; anthraquinone dyes; and quinophthalone dyes. More specifically, red dyes such as Disperse Red 60, Disperse Violet 26, CeresRed 7B, and Samaron Red F3BS; yellow dyes such as Disperse Yellow 231, PTY-52, and Macrolex Yellow 6G; and Solvent Blue 63. , Vaxolin Blue AP-FW, Holon Brilliant Blue SR, MS Blue 100, and C.I. I. Examples include blue dyes such as Solvent Blue 22.
Formation of an intermediate image using a sublimation dye is preferably performed by an inkjet method, but is not limited thereto. It can be appropriately selected from known image forming means such as letterpress (letterpress), intaglio (gravure), planography (offset), and stencil (silk screen).

<Transfer sheet>
There are no particular limitations on the transfer sheet. A type in which a receptive layer is coated on a base paper, a type in which a film is arranged inside or on the back side of the base paper, etc. can be used as appropriate.

<Sublimation transfer>
By superimposing a base material having a colorant receiving layer and a transfer sheet and performing hot pressing, the intermediate image on the transfer sheet can be sublimation-transferred to the colorant receiving layer on the base material. The heat press machine is not particularly limited, and any commercially available product can be used as appropriate. It is preferable to heat press at a temperature of 190 to 200° C., which is the sublimation temperature of the sublimation dye. During hot pressing, it is preferable from the viewpoint of adhesion and heat insulation to stack the high temperature plate of the hot press machine, the transfer sheet, the base material, the silicone resin rubber mat, etc. in this order, for example.
Generally, in the case of sublimation transfer to polyester fibers, it is said that dyes are adsorbed to the amorphous regions of the polyester fibers where molecular motion becomes more intense when the temperature rises. Regarding the curable compound contained in the colorant-receiving layer of the present invention, the principle of dye adsorption is not clear, but depending on its molecular structure, dye may or may not be adsorbed at high temperatures. It is thought that then.
If the number of polymerizable functional groups in the polymerizable compound contained in the curable ink is 2 or less, sufficient friction fastness may not be obtained.
In addition, when the number of polymerizable functional groups of the polymerizable compound is 3 or more, if the number of polymerizable functional groups is too large relative to the molecular weight of the polymerizable compound, a rigid network can be formed, but when heating in sublimation transfer, molecules It is thought that movement is restricted and staining is reduced. Therefore, it is thought that by increasing the molecular weight per number of polymerizable functional groups to a certain extent or more, the dyeability is improved due to molecular movement at high temperatures during heating in sublimation transfer.

Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited by the following Examples unless it exceeds the gist thereof.
"Parts" and "%" regarding component amounts are based on mass unless otherwise specified.

<Manufacture of curable ink>
The materials used in this example and comparative example are as follows.
"Acetylenol E100" is the trade name of a nonionic surfactant "ethylene oxide adduct of acetylene glycol" manufactured by Kawaken Fine Chemicals.
“FAM-301” and “FAM-401” are trade names of polymerizable compounds “water-soluble trifunctional acrylamide” and “water-soluble tetrafunctional acrylamide” manufactured by Fuji Film, respectively.
"U" is UAW-1000W20 (urethane acrylate, molecular weight 10,000, number of functional groups 10) manufactured by Kyoeisha Chemical Co., Ltd. Moreover, "EM90" is "Beam Set EM90" manufactured by Arakawa Chemical Industry Co., Ltd. (urethane acrylate, molecular weight 2000, number of functional groups 6).
The "polyester emulsion" is Vylonal 1480 manufactured by Toyobo.
The composition of the curable ink used in each example and comparative example is shown below.

(Example 1)
・FAM-301: 20%
・U: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Example 2)
・FAM-301: 20%
・U: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Example 3)
・FAM-301: 15%
・U: 5%
・Polyester emulsion: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Example 4)
・FAM-301: 15%
・U: 5%
・Polyester emulsion: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Example 5)
・FAM-301: 15%
・U: 5%
・Titanium oxide: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Example 6)
・EM90: 13%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 82.5%

(Comparative example 1)
・FAM-401: 5%
・Diacetone acrylamide: 20%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 70.5%

(Comparative example 2)
・FAM-301: 20%
・EM90: 5%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 82.5%

(Comparative example 3)
・Diacetone acrylamide: 25%
・Polymerization initiator A: 3%
・Acetylenol E100: 1%
・Triethanolamine: 0.5%
・Ion exchange water: 82.5%

Table 1 shows the type and content (%) of the polymerizable compound contained in the curable ink used in each Example and Comparative Example, and the value obtained by dividing S _AB by S _AC . In addition, the meanings of the abbreviations described in the types of polymerizable compounds in Table 1 are as follows.
F3:FAM-301
F4:FAM-401
DAAM: diacetone acrylamide

<Formation of colorant receiving layer>
An on-demand recording device (trade name "Pro-1000", manufactured by Canon Inc.) that applies thermal energy to ink according to a recording signal and ejects the ink was prepared. As shown in FIG. 2, this recording apparatus was equipped with a carriage equipped with UV-LED irradiation devices (trade name "M30", manufactured by Ushio Inc., 395 nm) at both ends, and was used as an inkjet recording apparatus.
The cumulative irradiation energy of the active energy rays in one pass in one direction was 500 mJ/cm ² . In this inkjet recording device, the recording duty of the colorant-receiving layer is 600 dpi x 600 dpi, and the colorant receiving layer is formed under conditions of applying 4 drops of curable ink of 3.8 ng to a unit area of 1/600 inch x 1/600 inch. Define it as 100%. Further, the driving frequency was 15 kHz.
Using this inkjet recording apparatus, a colorant receiving layer was formed on a substrate in one pass at a recording duty of 200%. A solid pattern of 3 cm x 10 cm was formed as a colorant receiving layer. As the base material, white or black cotton cloth or white silk cloth (both manufactured by Nomura Taylor) were used. Table 1 shows the types of substrates used in each Example and Comparative Example.

<Formation of intermediate image on transfer paper>
An intermediate image was formed by printing a solid pattern of 2 cm x 10 cm on transfer paper (DS Transfer General Purpose, manufactured by EPSON) using SC-F550 manufactured by EPSON.

<Sublimation transfer>
On a hot plate heated to 205° C., a transfer paper printed with a sublimation dye, a base material on which a colorant receiving layer was formed, a rubber mat, and a weight were placed one on top of the other in this order. Subsequently, sublimation transfer was performed by heating for 60 seconds. Thereafter, the transfer paper and the base material were collected from the hot plate, and then the transfer paper was peeled off from the base material.

<Stainability evaluation>
The recorded materials obtained in each of the Examples and Comparative Examples were immersed in a 0.5% soap solution at 50° C. and stirred for 30 minutes using a magnetic stirrer, with reference to the JIS L 0844 washing fastness test. Thereafter, the recorded material was rinsed with running water and dried. The optical density (OD) of the recorded matter after drying was measured, and the case where the optical density was less than 2.5 was rated "B", and the case where it was 2.5 or more was rated "A".
The evaluation results are shown in Table 1.

<Abrasion robustness evaluation>
The abrasion fastness of the image was evaluated by dryly measuring the abrasion fastness in accordance with JIS L 0849 "Test method for dye fastness to abrasion" using a Gakushin abrasion tester. The case where the fastness to discoloration and fading was less than 2.5 was rated "B", and the case where the fastness to discoloration and fading was 2.5 or more was rated "A".
The evaluation results are shown in Table 1.

In Examples 1 to 6, both cotton and silk had good dyeability and abrasion fastness. Furthermore, in Example 5, the curable ink contained a white pigment, so that a white coloring material receiving layer was formed, and as a result, the image formed by sublimation transfer was clear.
In Comparative Example 1, the dyeability was good, but the abrasion fastness was not satisfactory. In Comparative Example 2, although the abrasion fastness was good, sufficient dyeability was not obtained. Moreover, in Comparative Example 3, neither dyeability nor abrasion fastness could be sufficiently obtained.

Disclosures according to embodiments of the present invention include the following methods and configurations.
(Method 1)
A method for producing a recorded matter having a base material and an image formed on the base material, the method comprising:
A step of applying a curable ink containing a polymerizable compound onto the base material;
Curing the polymerizable compound to form a colorant receiving layer by irradiating the curable ink applied to the base material with active energy rays;
forming the image by sublimation-transferring an intermediate image formed on the transfer sheet into the region on the base material in which the colorant-receiving layer is formed;
has
The polymerizable compound includes a polymerizable compound having three or more polymerizable functional groups,
When the number of types of the polymerizable compound contained in the curable ink is n,
n is an integer of 1 or more,
For each of the n types of polymerizable compounds, calculate the product AB of the content A (mass%) of the polymerizable compound based on the mass of the entire curable ink and the molecular weight B of the polymerizable compound. , the sum of the products AB obtained for n types of the polymerizable compounds is S _AB ,
For each of the n types of polymerizable compounds, calculate the product AC of the content A (mass%) and the number C of polymerizable functional groups that the polymerizable compound has, and calculate the product AC for each of the n types of polymerizable compounds. When the sum of the obtained products AC is S _AC ,
A method for producing a recorded material, characterized in that the value obtained by dividing S _AB by S _AC is 200 or more.
(Method 2)
The method for producing a recorded matter according to method 1, wherein the curable ink is ejected from an inkjet recording head and applied onto the base material.
(Method 3)
The method for producing a recorded material according to method 2, wherein each of the n types of polymerizable compounds has a molecular weight of 5,000 or less.
(Method 4)
The method for producing a recorded matter according to any one of methods 1 to 3, wherein the curable ink contains water.
(Method 5)
The method for producing a recorded material according to any one of methods 1 to 4, wherein the polymerizable compound includes an acrylamide compound.
(Method 6)
The method for producing a recorded matter according to any one of methods 1 to 5, wherein the curable ink contains a white pigment.
(Method 7)
7. The method for producing a recorded matter according to any one of methods 1 to 6, wherein at least the surface of the base material on which the colorant receiving layer is formed has a softening point or decomposition temperature of 140° C. or higher.
(Configuration 1)
comprising a base material and a colorant receiving layer provided on the base material,
The colorant receiving layer is a cured product of a curable ink containing a polymerizable compound,
The polymerizable compound includes a polymerizable compound having three or more polymerizable functional groups,
When the number of types of the polymerizable compound contained in the curable ink is n,
n is an integer of 1 or more,
For each of the n types of polymerizable compounds, calculate the product AB of the content A (mass%) of the polymerizable compound based on the total mass of the curable ink and the molecular weight B of the polymerizable compound. and the sum of the products AB obtained for n types of the polymerizable compounds is S _AB ,
For each of the n types of polymerizable compounds, calculate the product AC of the content A (mass%) and the number C of polymerizable functional groups that the polymerizable compound has, and calculate the product AC for each of the n types of polymerizable compounds. When the sum of the obtained products AC is S _AC ,
A recording medium characterized in that a value obtained by dividing S _AB by S _AC is 200 or more.
(Configuration 2)
The recording medium according to configuration 1, wherein at least the surface of the base material on which the colorant receiving layer is provided has a softening point or decomposition temperature of 140° C. or higher.

11 Base material 12 Curable ink 13 Color material receiving layer 14 Transfer sheet 15 Intermediate image 16 Image 20 Active energy ray irradiation section 100 Carriage 101 Endless belt 102 Guide shafts 103, 104 Pulley 105 Motor 106 Linear encoder 107 Linear scale 108 Slit detection system 109, 110, 111, 112 Roller unit 113 Cap member

Claims (9)

A method for producing a recorded matter having a base material and an image formed on the base material, the method comprising:
A step of applying a curable ink containing a polymerizable compound onto the base material;
irradiating the curable ink applied to the base material with active energy rays to cure the polymerizable compound to form a colorant-receiving layer;
forming the image by sublimation-transferring an intermediate image formed on the transfer sheet into the area on the base material in which the colorant-receiving layer is formed;
has
The polymerizable compound includes a polymerizable compound having three or more polymerizable functional groups,
When the number of types of the polymerizable compound contained in the curable ink is n,
n is an integer of 1 or more,
For each of the n types of polymerizable compounds, calculate the product AB of the content A (mass%) of the polymerizable compound based on the mass of the entire curable ink and the molecular weight B of the polymerizable compound. , the sum of the products AB obtained for n types of the polymerizable compounds is S _AB ,
For each of the n types of polymerizable compounds, calculate the product AC of the content A (mass%) and the number C of polymerizable functional groups that the polymerizable compound has, and calculate the product AC for each of the n types of polymerizable compounds. When the sum of the obtained products AC is S _AC ,
A method for producing a recorded material, characterized in that the value obtained by dividing S _AB by S _AC is 200 or more. 2. The method for manufacturing a recorded matter according to claim 1, wherein the curable ink is ejected from an inkjet recording head and applied onto the base material. 3. The method for producing a recorded material according to claim 2, wherein each of the n types of polymerizable compounds has a molecular weight of 5,000 or less. The method for producing a recorded matter according to claim 1, wherein the curable ink contains water. 2. The method for producing a recorded material according to claim 1, wherein the polymerizable compound includes an acrylamide compound. The method for producing a recorded matter according to claim 1, wherein the curable ink contains a white pigment. 2. The method for producing a recorded matter according to claim 1, wherein at least the surface of the base material on which the colorant receiving layer is formed has a softening point or decomposition temperature of 140° C. or higher. comprising a base material and a colorant receiving layer provided on the base material,
The colorant receiving layer is a cured product of a curable ink containing a polymerizable compound,
The polymerizable compound includes a polymerizable compound having three or more polymerizable functional groups,
When the number of types of the polymerizable compound contained in the curable ink is n,
n is an integer of 1 or more,
For each of the n types of polymerizable compounds, calculate the product AB of the content A (mass%) of the polymerizable compound based on the total mass of the curable ink and the molecular weight B of the polymerizable compound. and the sum of the products AB obtained for n types of the polymerizable compounds is S _AB ,
For each of the n types of polymerizable compounds, calculate the product AC of the content A (mass%) and the number C of polymerizable functional groups that the polymerizable compound has, and calculate the product AC for each of the n types of polymerizable compounds. When the sum of the obtained products AC is S _AC ,
A recording medium characterized in that a value obtained by dividing S _AB by S _AC is 200 or more. 9. The recording medium according to claim 8, wherein at least the surface of the base material on which the colorant receiving layer is provided has a softening point or decomposition temperature of 140° C. or higher.

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