JP7351096B2 - Thermal transfer image receptors and prints - Google Patents

Description

The present invention relates to a thermal transfer image receptor and a printed matter.

Various printing methods have been known in the past, but among them, the dye sublimation thermal transfer method allows the density gradation to be freely adjusted, has excellent reproducibility of intermediate colors and gradations, and can achieve high quality comparable to silver halide photography. Image formation is possible.

In this sublimation type thermal transfer method, a thermal transfer sheet with a dye layer and a thermal transfer image receptor with a receptor layer are overlapped, and then the thermal head of the printer heats the thermal transfer sheet to reduce the sublimation in the dye layer. A printed matter is obtained by transferring a dye to a receiving layer of a thermal transfer image receptor and forming an image.
Normally, thermal transfer image receptors are required to have high print omission prevention properties so that the formed image does not suffer from omissions.

By the way, when producing prints using a sublimation thermal transfer method, if the releasability between the dye layer of the thermal transfer sheet and the receiving layer of the thermal transfer image receptor is low, the dye layer will stick to the receiving layer. When the dye layer is peeled off from the receptor layer after image formation, there are problems such as peeling noise, poor running, peeling marks, etc., and the quality of the image formed on the receptor layer is degraded. It can occur. Furthermore, due to the adhesion between the receptor layer and the dye layer, abnormal transfer may occur, such as the dye layer itself being transferred or the receptor layer being removed to the thermal transfer sheet side.
Therefore, the thermal transfer image receptor is required to have high mold releasability (hereinafter simply referred to as mold releasability) with respect to the dye layer of the thermal transfer sheet.

In addition, thermal transfer image receptors are capable of forming highly stable images that do not bleed, even when the printed matter is left in a high-temperature environment for a long time (hereinafter referred to as image storage). stability), the ability to form an image with a sufficiently high density (hereinafter simply referred to as image density), and the ability to prevent the receptor layer of the thermal transfer receptor from adhering to the base material when rolled up and stored (blocking resistance). gender) etc. are required.

In a previous application (Japanese Patent Application No. 2018-046989), the present inventors have proposed a thermal transfer sheet that has high releasability from the dye layer included in the thermal transfer sheet, as well as high image storage stability, image density, and blocking resistance. An image receptor is proposed.

Recently, the present inventors have discovered that when producing prints using the thermal transfer image receptor proposed in a previous application, friction occurs between the conveyance roller provided in the printer and the thermal transfer image receptor, causing the prints to deteriorate. It was found that there is a possibility that scratches may occur, and that there is room for further improvement in the scratch resistance.

The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to provide a product that has high print omission prevention properties, mold releasability, image storage stability, image density, and blocking resistance, and has high durability. An object of the present invention is to provide a thermal transfer image receptor having scratch resistance.

The thermal transfer image receptor of the present invention includes a base material, a first receptor layer, a second receptor layer,
the first receptor layer includes a vinyl resin and a hardening material;
The second receptor layer includes a resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group, a hardening material, and a slip material, and the slip material has an average particle diameter of 2 μm or more and 9 μm or less,
The content of the slip material in the second receiving layer is 1% by mass or more and 8% by mass or less.

In one embodiment, the slip material is a polyolefin wax.

In one embodiment, the resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group has a unit (a) having an aromatic hydrocarbon group, a unit (b) having an aliphatic hydrocarbon group, and a hydroxyl group. Contains unit (c).

In one embodiment, the surface roughness (Ra) of the image forming surface of the second receptor layer before the microscratch test is 0.01 μm or more and 0.2 μm or less.

In one embodiment, the surface roughness (Sa) of the image forming surface of the second receptor layer after the microscratch test is 0.01 μm or more and 0.20 μm or less.

In one embodiment, the dynamic friction coefficient of the image forming surface of the second receptor layer is 0.3 or more and 0.8 or less.

In one embodiment, the base material includes a first base material, an adhesive layer, and a second base material,
Electronic components are embedded in the adhesive layer.

The printed matter of the present invention is characterized by comprising the above thermal transfer image receptor and a protective layer.

According to the present invention, it is possible to provide a thermal transfer image receptor that has high print omission prevention properties, mold release properties, image storage stability, image density, and blocking resistance, and also has high scratch resistance.

FIG. 1 is a schematic cross-sectional view showing one embodiment of the thermal transfer image receptor of the present invention. FIG. 2 is a schematic cross-sectional view showing one embodiment of the thermal transfer image receptor of the present invention. FIG. 3 is a schematic cross-sectional view showing one embodiment of the thermal transfer image receptor of the present invention. FIG. 4 is a schematic cross-sectional view showing an embodiment of the printed product of the present invention. FIG. 5 is a schematic cross-sectional view showing an embodiment of the printed product of the present invention.

(Thermal transfer image receptor)
The thermal transfer image receptor 10 of the present invention includes a base material 11, a first receptor layer 12, and a second receptor layer 13, as shown in FIG.
Further, in one embodiment, in the thermal transfer image receptor 10 of the present invention, as shown in FIG. 2, the base material 11 includes a first base material 14, an adhesive layer 15, and a second base material 16.
Further, in one embodiment, an electronic component 17 is embedded in the adhesive layer 15 included in the base material 11, as shown in FIG. Further, in one embodiment, as shown in FIG. 3, the electronic component 17 includes an IC chip 18 and an antenna body 19.
Further, in one embodiment, the thermal transfer image receptor may include another layer such as a cushion layer between the base material and the first receptor layer (not shown).
Each layer included in the thermal transfer image receptor of the present invention will be described in detail below.

(Base material)
Examples of substrates include paper substrates such as condenser paper, glassine paper, parchment paper, synthetic paper, high-quality paper, art paper, coated paper, cast coated paper, wallpaper, backing paper, and impregnated paper, as well as polyethylene terephthalate (PET). ), polyesters such as polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), 1,4-polycyclohexylene dimethylene terephthalate, terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer, nylon 6 and nylon 6,6 Polyamides such as polyethylene (PE), polypropylene (PP) and polyolefins such as polymethylpentene, polyvinyl chloride, polyvinyl alcohol (PVA), polyvinyl acetate, vinyl chloride-vinyl acetate copolymers, polyvinyl butyral and polyvinyl pyrrolidone ( Vinyl resins such as PVP), (meth)acrylic resins such as polyacrylate, polymethacrylate and polymethylmethacrylate, imide resins such as polyimide and polyetherimide, cellophane, cellulose acetate, nitrocellulose, cellulose acetate propionate ( CAP) and cellulose resins such as cellulose acetate butyrate (CAB), styrene resins such as polystyrene (PS), polycarbonates, and ionomer resins (hereinafter simply referred to as "resin films"). .
Further, the resin film may be a porous resin film having microvoids inside.
Among the above resins, polyesters such as PET and PEN are preferred from the viewpoint of mechanical strength, and PET is particularly preferred.
In the present invention, "(meth)acrylic" includes both "acrylic" and "methacrylic". Furthermore, "(meth)acrylate" includes both "acrylate" and "methacrylate."

Furthermore, a laminate of the above-described paper base material or resin film can also be used as the base material. The laminate can be produced by using a dry lamination method, a wet lamination method, an extrusion method, or the like.

In this embodiment, the thickness of the base material is preferably 50 μm or more and 300 μm or less from the viewpoint of mechanical strength.

When the base material is a resin film, the resin film may be a stretched film or an unstretched film, but from the viewpoint of strength, a stretched film stretched in a uniaxial direction or biaxial direction is preferred. It is preferable to use

In one embodiment, the substrate comprises, in this order, a first substrate, an adhesive layer, and a second substrate.
In one embodiment, an electronic component is embedded in the adhesive layer, and the electronic component includes an IC chip, a coil-shaped antenna body connected to the IC chip, and the like.
As the adhesive that can be used to form the adhesive layer, conventionally known adhesives can be used without particular limitation, and examples thereof include adhesives containing ethylene-vinyl acetate copolymer, polyester, polyamide, polyolefin, and the like.

From the viewpoint of the smoothness of the base material, it is preferable that the electronic component is embedded in the adhesive layer as an inlet.
Note that an inlet is an electronic component placed on or sandwiched between a porous resin film, a porous foamed resin film, a flexible resin sheet, a porous resin sheet, or a nonwoven fabric sheet. From the viewpoint of printability and processing suitability, it is preferable that these have high smoothness.

In this embodiment, the thickness of the base material is preferably changed as appropriate depending on the size of the electronic component to be embedded, and can be, for example, 300 μm or more and 1000 μm or less.

(First receptor layer)
The thermal transfer image receptor of the present invention includes a first receptor layer containing a vinyl resin and a curing material. Thereby, the image storage stability and image density of the thermal transfer image receptor can be improved.

Examples of the vinyl resin include polyvinyl chloride, PVA, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, and PVP. Furthermore, copolymers of the monomers constituting the vinyl resin and other monomers may be used within a range that does not impair the characteristics of the present invention.
Among the above-mentioned vinyl resins, polyvinyl butyral is preferred from the viewpoint of image storage stability and image density.
The first receptor layer may contain two or more kinds of vinyl resins.

The content of the vinyl resin in the first receiving layer is preferably 40% by mass or more and 98% by mass or less, more preferably 50% by mass or more and 97% by mass or less. Thereby, image storage stability and image density can be further improved.

Examples of the curing agent contained in the first receiving layer include isocyanate compounds, carbodiimide compounds, epoxy compounds, and oxazoline compounds.
Among the above-mentioned curing agents, isocyanate compounds are preferred, and examples include xylene diisocyanate (XDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), isophorone diisocyanate (IPDI), and diphenylmethane diisocyanate (MDI).
Among the above-mentioned isocyanate compounds, XDI and HDI are preferred from the viewpoint of preventing yellowing of the first receptor layer.
The first receptor layer may contain two or more types of curing agents.

In the first receptor layer, the content ratio of the hardening material to the resin material (hardening material/resin material) is preferably 5/95 or more and 25/75 or less, and 10/90 or more and 20/75 or less, based on mass. More preferably, it is 80 or less. Thereby, image storage stability and image density can be further improved.

The first receptor layer may contain resin materials other than vinyl resin as long as the characteristics of the present invention are not impaired, such as polyester, polyamide, polyolefin, (meth)acrylic resin, imide resin, cellulose resin, Examples include styrene resin, polycarbonate, and ionomer resin.

In addition, the first receptor layer may not contain additives such as fillers, plasticizers, antistatic materials, ultraviolet absorbers, inorganic particles, organic particles, mold release agents, and dispersants, as long as the characteristics of the present invention are not impaired. It's okay to stay.

The thickness of the first receptor layer is preferably 1 μm or more and 20 μm, more preferably 3 μm or more and 15 μm. Thereby, image storage stability and image density can be further improved.

The first receptive layer is prepared by dispersing or dissolving the above-mentioned materials in water or an appropriate solvent, and applying a known method such as a roll coating method, reverse roll coating method, gravure coating method, reverse gravure coating method, bar coating method, and rod coating method. It can be formed by applying the coating onto a substrate to form a coating film and drying the coating film.

(Second receptor layer)
The thermal transfer image receptor of the present invention includes a second receptor layer containing a resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group, a curing material, and a slipping material.

A resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group (hereinafter referred to as "resin X" in some cases) includes (1) a unit having an aromatic hydrocarbon group, a unit having an aliphatic hydrocarbon group and a resin containing a unit having a hydroxyl group, (2) a resin containing a unit having an aromatic hydrocarbon group and an aliphatic hydrocarbon group, and a unit having a hydroxyl group, (3) a unit having an aromatic hydrocarbon group and a hydroxyl group, and a fat. (1) Aromatic A resin containing a unit having a group hydrocarbon group, a unit having an aliphatic hydrocarbon group, and a unit having a hydroxyl group, that is, a compound having an aromatic hydrocarbon group and a double bond, a compound having an aliphatic hydrocarbon group and a double bond, and copolymers of compounds having a hydroxyl group and a double bond.

The weight average molecular weight (Mw) of the resin X is preferably 50,000 or more, more preferably 55,000 or more. Further, the Mw of the resin X is preferably 200,000 or less. Thereby, the mold releasability and image storage stability of the thermal transfer image receptor can be further improved.
In the present invention, Mw is a value obtained in terms of polystyrene by gel permeation chromatography (GPC) in accordance with JIS K 7252-1 (published in 2008).

Hereinafter, a case where the resin X is a resin containing a unit having an aromatic hydrocarbon group, a unit having an aliphatic hydrocarbon group, and a unit having a hydroxyl group will be described in detail.

Unit (a) having an aromatic hydrocarbon group
The unit (a) having an aromatic hydrocarbon group is a structural unit derived from a compound having an aromatic hydrocarbon group and a double bond.

In one embodiment, the compound having an aromatic hydrocarbon group and a double bond is represented by the following general formula (1). When the resin X contains a structural unit derived from a compound represented by the following general formula (1), the image storage stability and blocking resistance of the thermal transfer image receptor can be improved.
In the above formula, A represents an aromatic hydrocarbon group.
In the present invention, the term "aromatic hydrocarbon group" refers to a hydrocarbon group containing an aromatic ring, and this aromatic ring includes an alkyl group having 1 to 24 carbon atoms, a halogen atom, and a halogen atom having 2 to 24 carbon atoms. may be substituted with at least one of the alkoxy groups.
Examples of the aromatic hydrocarbon group include phenyl group, naphthyl group, anthranyl group, benzyl group, phenethyl group, tolyl group, xylyl group, and ethylphenyl group.
Among the above, from the viewpoint of mold releasability, phenyl group and benzyl group are preferred, and phenyl group is particularly preferred.
In the above formula, B represents hydrogen, an aromatic hydrocarbon group, or an aliphatic hydrocarbon group having 1 or more and 10 or less carbon atoms, and preferably represents hydrogen.

Examples of compounds satisfying the above general formula (1) include styrene (St), α-methylstyrene, α-ethylstyrene, α-propylstyrene, 4-methylstyrene, 4-ethylstyrene, 3-phenylpropylene, -Phenylbutylene, diphenylethylene, etc. Among these, St, α-methylstyrene, α-ethylstyrene, 4-methylstyrene and 4-ethylstyrene are preferred.

In another embodiment, the unit (a) having an aromatic hydrocarbon group and a double bond is a structural unit derived from a (meth)acrylate having an aromatic group.

Examples of (meth)acrylates having an aromatic group include phenyl acrylate (PA), phenyl methacrylate (PMA), 4-methyl phenyl acrylate (4MPA), 4-methyl phenyl methacrylate (4MPMA), and 4-ethyl phenyl acrylate (4EPA). , 4-ethylphenyl methacrylate (4EPMA), benzyl acrylate (BzA), benzyl methacrylate (BzMA), 4-methylbenzyl acrylate (4MBzA), 4-methylbenzyl methacrylate (4MBzMA), 4-ethylbenzyl acrylate (4EBzA) and 4 -ethylbenzyl methacrylate (4EBzMA) and the like.

When all the structural units contained in resin More preferably, it is 75% by mass or less. Thereby, the image storage stability and blocking resistance of the thermal transfer image receptor can be further improved.

Unit (b) having an aliphatic hydrocarbon group
The unit (b) having an aliphatic hydrocarbon group is a structural unit derived from a compound having an aliphatic hydrocarbon group and a double bond.

In one embodiment, the compound having an aliphatic hydrocarbon group and a double bond is a (meth)acrylate-derived structural unit having an aliphatic hydrocarbon group.

The number of carbon atoms in the aliphatic hydrocarbon group is preferably 2 or more and 24 or less, and preferably 4 or more and 18 or less. By setting the number of carbon atoms in the aliphatic hydrocarbon group within the above numerical range, the releasability of the thermal transfer image receptor can be further improved.
Further, the aliphatic hydrocarbon group may be linear, branched, or cyclic.

Examples of the aliphatic hydrocarbon group include n-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, n-undecyl group. group, n-dodecyl group, n-tridecyl group, n-tetradecyl group, n-pentadecyl group, n-hexadecyl group, cyclopentyl group, cyclohexyl group, and isobornyl group.

Examples of (meth)acrylates having an aliphatic hydrocarbon group include ethyl acrylate (EA), ethyl methacrylate (EMA), butyl acrylate (BA), butyl methacrylate (BMA), lauryl acrylate (LA), lauryl methacrylate (LMA), Examples include stearyl acrylate (SA), stearyl methacrylate (SMA), isobornyl acrylate (IBXA), and isobornyl methacrylate (IBXMA). Among these, LA and LMA are preferred from the viewpoint of mold releasability.

In addition to (meth)acrylates having aliphatic hydrocarbon groups, compounds having aliphatic hydrocarbon groups and double bonds include propylene, 1-butene, 2-butene, 1-pentene, 2-pentene, 1-hexene. , 2-hexene, 3-hexene, 1-heptene, 2-heptene, 3-heptene, 1-octene, 2-octene, 3-octene, and 4-octene.

When all the structural units contained in resin More preferably, it is 55% by mass or less. Thereby, the releasability of the thermal transfer image receptor can be further improved.

Unit (c) having a hydroxyl group
The unit (c) having a hydroxyl group is a structural unit derived from a compound having a hydroxyl group and a double bond.

In one embodiment, the compound having a hydroxyl group and a double bond is a (meth)acrylate-derived structural unit having a hydroxyl group.
In the present invention, the hydroxyl group may be directly bonded to this (meth)acrylate, or may be bonded via a linear or branched hydrocarbon group having 2 to 18 carbon atoms. It's okay.

Examples of (meth)acrylates having a hydroxyl group include 2-hydroxyethyl acrylate (2HEA), 2-hydroxyethyl methacrylate (2HEMA), 2-hydroxypropyl acrylate (2HPA), 2-hydroxypropyl methacrylate (2HPMA), and 4-hydroxybutyl Examples include acrylate (4HBA) and 4-hydroxybutyl methacrylate (4HBMA).

In addition to (meth)acrylates having a hydroxyl group, examples of compounds having a hydroxyl group and a double bond include alkenols such as propenyl alcohol, 3-buten-1-ol, and 2-buten-1,4-diol.

When all the structural units contained in the resin % or less is more preferable. Thereby, the releasability and image density of the thermal transfer image receptor can be further improved.

The content of the resin X in the second receptor layer is preferably 50% by mass or more and 95% by mass or less, more preferably 70% by mass or more and 90% by mass or less. Thereby, the releasability and image density of the thermal transfer image receptor can be further improved.

As the curing agent, the above curing materials can be used, and from the viewpoint of preventing yellowing of the second receptor layer, isocyanate compounds are preferable, and XDI and HDI are more preferable.
The second receptor layer may contain two or more types of curing agents.

In the second receptor layer, the content ratio of the hardening material and the resin material (hardening material/resin material) is preferably 5/95 or more and 25/75 or less, and 10/90 or more and 20/75 or less, based on mass. More preferably, it is 80 or less. This makes it possible to further improve the print omission prevention properties, mold release properties, image density, image storage stability, and scratch resistance of the thermal transfer image receptor.

Slip materials include, for example, polyolefin waxes such as polyethylene wax and polypropylene wax, paraffin wax, montan wax, sucrose fatty acid ester, glycerin fatty acid ester, stearyl alcohol, stearic acid amide, butyl stearate, calcium stearate, zinc stearate, Examples include magnesium stearate, oleic acid amide and erucic acid amide.
Among the above-mentioned waxes, polyolefin wax is preferred, and polyethylene wax is more preferred, from the viewpoint of image storage stability and scratch resistance of the thermal transfer image receptor.

The average particle diameter of the slip material is 2 μm or more and 9 μm or less. Thereby, it is possible to further improve the print omission prevention property and scratch resistance of the thermal transfer image receptor. Furthermore, when a protective layer is provided on the second receptor layer, the adhesion to the protective layer or the adhesive layer can be improved.
Further, the average particle diameter of the slip material is preferably 3 μm or more and 8 μm or less.
In the present invention, the average particle size means the volume average particle size, and can be measured using a method based on JIS Z 8901, such as a laser diffraction/scattering particle size/particle size distribution measuring device Microtrac 3100II manufactured by Nikkiso Co., Ltd. It can be measured by

The melting point of the slip material is preferably 100°C or more and 150°C or less, more preferably 105°C or more and 135°C or less. Thereby, the mold releasability and print omission prevention property of the thermal transfer image receptor can be further improved.
In the present invention, the melting point of the slip material is measured in accordance with JIS K 7121.

The content of the slip material in the second receiving layer is 1% by mass or more and 15% by mass or less. This makes it possible to further improve the print omission prevention properties, image storage stability, and abrasion resistance of the thermal transfer image receptor. Moreover, the adhesiveness with the protective layer or adhesive layer can be improved.
Further, the content of the slip material in the second receiving layer is preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 8% by mass or less.

The second receptor layer may contain resin materials other than resin X within a range that does not impair the characteristics of the present invention, such as polyester, polyamide, polyolefin, (meth)acrylic resin, imide resin, cellulose resin, Examples include styrene resin, polycarbonate, and ionomer resin.

Further, the second receptor layer may contain the above-mentioned additives within a range that does not impair the characteristics of the present invention.

The surface roughness (Ra) of the image forming surface of the second receptor layer before the microscratch test is preferably 0.01 μm or more and 0.2 μm or less, more preferably 0.1 μm or more and 0.18 μm or less. preferable. Thereby, it is possible to prevent white spots from occurring in the printed matter to be produced.
In the present invention, surface roughness (Ra) is measured in accordance with JIS B 0601.

The surface roughness (Sa) of the image forming surface of the second receptor layer before the microscratch test is preferably 0.05 μm or more and 0.20 μm or less, more preferably 0.08 μm or more and 0.18 μm or less. preferable.
The surface roughness (Sa) of the image forming surface of the second receptor layer after the microscratch test is preferably 0.01 μm or more and 0.20 μm or less, more preferably 0.05 μm or more and 0.15 μm or less. The thickness is preferably 0.065 μm or more and 0.12 μm or less.
Further, in a preferred embodiment of the present invention, the value after the microscratch test tends to be lower than the value before the microscratch test.
This is because the part of the slip material which is contained in the second receptor layer in an amount within a specific numerical range and has a particle size within a specific numerical range partially protrudes from the second receptor layer, and the second receptor layer is scratched. It is presumed that the reason is that it is applied on the layer surface and plays a role as a coating (slip property imparting function). It is presumed that this coating effectively improves the scratch resistance of the second receptor layer.
In the present invention, the microscratch test is conducted using a microscratch tester (CSR-2000, manufactured by Resca Co., Ltd.) in accordance with JIS R 3255 under the following measurement conditions.
Furthermore, in the present invention, the surface roughness (Sa) is measured in accordance with ISO 25178 using a surface roughness measuring device (Profile Measuring Laser Microscope VK-8710, manufactured by Keyence Corporation).
Before the microscratch test, the surface roughness Sa of the image forming surface of the second receptor layer is measured in an area of 80 μm in length×240 μm in width.
In addition, after the microscratch test, the surface roughness Sa of the image forming surface of the second receptor layer was measured as 80 μm vertically (range excluding 10 μm at the top and bottom ends of excitation amplitude 100 μm) × 240 μm horizontally The test is performed in an area of 10 μm or more and 250 μm or less from the starting point of the test in the scratch direction perpendicular to the width direction.
(Measurement condition)
・Scratch speed: 10μm/sec ・Indenter tip diameter: 15μm
・Excitation amplitude: 100μm
・Measurement end load: 25mN
・Measurement end time: 60 seconds

The dynamic friction coefficient of the image forming surface of the second receptor layer is preferably 0.3 or more and 0.8 or less, more preferably 0.3 or more and 0.6 or less. Thereby, the scratch resistance of the thermal transfer image receptor can be further improved.
In the present invention, the static friction coefficient is measured in accordance with JIS K 7125.

The thickness of the second receptor layer is preferably 0.3 μm or more and 5 μm, more preferably 0.3 μm or more and 3 μm. This makes it possible to further improve the print omission prevention properties, mold release properties, image storage stability, and scratch resistance of the thermal transfer image receptor.

The second receptive layer can be prepared by dispersing or dissolving the above materials in water or a suitable solvent and applying the roll coating method, reverse roll coating method, gravure coating method, reverse gravure coating method, kiss reverse gravure coating method, bar coating method, etc. It can be formed by coating on the first receptor layer to form a coating film by a known means such as a rod coating method, and drying this.

(Cushion layer)
In one embodiment, the thermal transfer image receptor of the present invention includes a cushion layer between the base material and the first receptor layer. As a result, it is possible to realize an image receptor that does not deform the card even during thermal transfer printing or hot pressing, and has excellent durability such as chemical resistance. In addition, since the cushion layer has cushioning properties, it makes good contact with the head during printing, and provides printed matter without white spots and roughness during printing. In one embodiment, the cushion layer includes an actinic radiation curable resin.

The thickness of the cushion layer is not particularly limited, but can be 3 μm or more and 20 μm or less. More preferably, it is 5 μm or more and 12 μm or less. If the coating film is less than 3 μm, the function of mitigating the effect of unevenness of the base sheet may be impaired, and if the coating film exceeds 20 μm, the actinic light-curable resin composition will be completely degraded even by actinic ray irradiation. It may be difficult for things to harden completely.

(Prints)
The printed matter 20 of the present invention is produced using the above thermal transfer image receptor, and as shown in FIG. 4, includes a base material 11, a first receptor layer 12, a second receptor layer 13, A protective layer 21 is provided, and an image is formed on at least one of the first receptive layer 12 and the second receptive layer 13.
Further, in one embodiment, the printed matter 20 of the present invention has a base material 11 including a first base material 14, an adhesive layer 15, and a second base material 16, as shown in FIG. An electronic component 17 including an IC chip 18 and an antenna body 19 is buried therein.
In one embodiment, the printed object also includes another layer, such as a cushion layer, between the base material and the first receptor layer (not shown).
Furthermore, in one embodiment, the print includes an adhesive layer between the second receptor layer and the protective layer.
Further, in one embodiment, the print includes a release layer on the protective layer.
Furthermore, in one embodiment, the printed matter includes a primer layer between the protective layer and the adhesive layer.
Hereinafter, each layer included in the printed matter of the present invention will be described in detail, but the description of those having the same structure as the thermal transfer image-receiving sheet will be omitted here.

(protective layer)
The protective layer is provided on the second receptor layer, thereby significantly improving the scratch resistance, storage stability, etc. of the image formed on at least one of the first receptor layer and the second receptor layer. .

The protective layer includes at least one resin material, such as (meth)acrylic resin, styrene resin, vinyl resin, polyolefin, polyester, polyamide, imide resin, cellulose resin, thermosetting resin, actinic light-curable resin, etc. can be mentioned.
In the present invention, the term "actinic ray-curable resin" refers to a resin that has been cured by irradiating the active ray-curable resin with actinic rays.
Furthermore, in the present invention, "actinic rays" refers to radiation that chemically acts on actinic ray-curable resins to promote polymerization, and specifically includes visible rays, ultraviolet rays, X-rays, and electron rays. rays, α rays, β rays, γ rays, etc.

The content of the resin material in the protective layer is not particularly limited, but from the viewpoint of the scratch resistance and storage stability of the image, it is preferably 50% by mass or more and 95% by mass or less.

Further, the protective layer can contain the above-mentioned additives within a range that does not impair the characteristics of the present invention.

The thickness of the protective layer is preferably 3 μm or more and 10 μm or less, more preferably 5 μm or more and 10 μm or less. Thereby, the scratch resistance and storage stability of the image can be further improved.

(Adhesive layer)
The adhesive layer is provided between the second receptor layer and the protective layer in order to improve their adhesion.

The adhesive layer contains at least one resin material that melts or softens with heat and exhibits adhesive properties, such as polyvinyl acetate, PVB, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, etc. Vinyl resins, polyolefins such as PE and PP, polyesters such as PET and PBT, polyamides, imide resins, (meth)acrylic resins such as polyacrylate, polymethacrylate and polymethylmethacrylate, cellulose resins such as cellulose diastase, and polyurethane. etc.

The content of the resin material in the adhesive layer is not particularly limited, but from the viewpoint of adhesion between the second receptor layer and the protective layer, it is preferably 50% by mass or more and 95% by mass or less. .

Further, the adhesive layer may contain the above-mentioned additives within a range that does not impair the characteristics of the present invention.

The thickness of the adhesive layer is not particularly limited, and can be, for example, 0.5 μm or more and 10 μm or less.

(Peeling layer)
In one embodiment, the print includes a release layer on the protective layer. Thereby, the durability of the printed matter can be further improved. Further, as described below, the transferability of a protective layer transfer sheet used for producing printed matter can be improved.

The release layer includes at least one resin material, such as vinyl resin such as ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, maleic acid-modified vinyl chloride-vinyl acetate copolymer, polyamide, Examples include polyester, polyolefin, (meth)acrylic resin, cellulose resin, urethane resin, polycarbonate, epoxy resin, phenol resin, alkyd resin, urea resin, melamine resin, silicone resin, and rubber resin.

The release layer can contain the above additives.

The thickness of the release layer is not particularly limited, and can be 0.1 μm or more and 2 μm or less.

(Primer layer)
In one embodiment, the primer layer is provided to improve the adhesion between the protective layer and the adhesive layer.

The primer layer includes at least one resin material. The resin material is not particularly limited and can be used as long as it can improve the adhesion between the protective layer and the adhesive layer, such as polyester, polyamide, polyolefin, (meth)acrylic resin, vinyl resin, and imide resin. , cellulose resin, styrene resin, polycarbonate, and ionomer resin.

The primer layer can contain the above additives.

The thickness of the primer layer is not particularly limited, and can be 0.1 μm or more and 2 μm or less.

In the printed matter of the present invention, after forming an image on at least one of the first receiving layer and the second receiving layer provided in the thermal transfer image receptor, the protective layer transfer sheet including at least the protective layer is transferred to the second receiving layer. It can be produced by superimposing the protective layer transfer sheet on top of the second receptor layer, heating the protective layer transfer sheet, and transferring the protective layer onto the second receptor layer.
Further, the protective layer transfer sheet may include an adhesive layer on the protective layer, thereby improving the adhesion between the protective layer and the second receptor layer. Further, the protective layer transfer sheet may include a release layer under the protective layer, thereby improving transferability. Furthermore, the protective layer transfer sheet may include a primer layer between the protective layer and the adhesive layer, thereby improving the adhesion between these layers.

EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples. In addition, the content below is described as the content after solid content conversion, unless otherwise specified.

Example 1
A 188 μm thick PET film (Tetron (registered trademark) film U292-188, manufactured by Teijin DuPont) was prepared as a base material, and one side of the film was coated with the following composition for forming a first receptor layer. The liquid was applied and dried to form a first receptor layer with a thickness of 10 μm.
(First receptor layer forming coating liquid)
・Vinyl resin 95 parts by mass (Sekisui Chemical Co., Ltd., S-LEC (registered trademark) BL-S, polyvinyl butyral)
・Curing agent 5 parts by mass (Mitsui Chemicals, Inc., Takenate (registered trademark) D-110N, isocyanate compound)
・Methyl ethyl ketone (MEK) 200 parts by mass ・Toluene 200 parts by mass

On the first receptor layer formed as described above, a second receptor layer forming coating liquid having the following composition was applied and dried to form a second receptor layer having a thickness of 1 μm.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass (styrene (St): lauryl methacrylate (LMA): 2-hydroxyethyl methacrylate (2HEMA) = 70:20:10, weight average molecular weight: 8.61×10 ⁴ )
・Curing agent 14.5 parts by mass (Mitsui Chemicals, Inc., Takenate (registered trademark) D-110N, isocyanate compound)
- 3 parts by mass of slip material A (manufactured by Polycon Co., Ltd., Polycon B-158, polyethylene wax, average particle size 5.1 μm, melting point 120°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 2
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 84 parts by mass ・Curing material 15 parts by mass ・Slip material A 1 part by mass ・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 3
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 81 parts by mass ・Curing material 14 parts by mass ・Slip material A 5 parts by mass ・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 4
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material B 3 parts by mass (manufactured by Showa Ink Co., Ltd., polyethylene wax, average particle size 6.5 to 7.5 μm, melting point 105°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 5
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material C 3 parts by mass (manufactured by Polycon Co., Ltd., Polycon PA-60, polyethylene wax, average particle size 4.9 μm, melting point 103°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 6
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material D 3 parts by mass (Polycon Co., Ltd., Polycon B-310, polyethylene wax, average particle size 5.5 μm, melting point 110°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 7
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material E 3 parts by mass (Polycon MAC-100, polyethylene wax, average particle size 3.1 μm, melting point 117°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 8
The composition of the coating solution for forming the second receptor layer was changed as shown below, and in the preparation of the coating solution, glass beads were used to disperse the slip material so that the average particle size was 4 to 5 μm. A thermal transfer image receptor was produced in the same manner as in Example 1 except for the following.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material F 3 parts by mass (Polywax 3000, polyethylene wax, manufactured by Toyo Adre Co., Ltd., melting point 129°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Example 9
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X2 82.5 parts by mass (St: lauryl acrylate (LA): 2HEMA=70:20:10, weight average molecular weight: 8.53×10 ⁴ )
- Hardening material 14.5 parts by mass - Slip material A 3 parts by mass - MEK 200 parts by mass - Toluene 200 parts by mass

Example 10
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the base material was produced as follows.
A PET film (manufactured by Teijin DuPont, Tetron (registered trademark) film U292-188) with a thickness of 188 μm was prepared, and a hot melt adhesive (Macroplast QR3460, manufactured by Henkel) was applied to one side of the film in the same manner. The PET films were bonded together, and electronic components were embedded in the adhesive layer formed by the adhesive to obtain a base material.

Example 11
A thermal transfer image receptor was produced in the same manner as in Example 9, except that the base material was produced as follows.
A PET film (manufactured by Teijin DuPont, Tetron (registered trademark) film U292-188) with a thickness of 188 μm was prepared, and a hot melt adhesive (Macroplast QR3460, manufactured by Henkel) was applied to one side of the film in the same manner. The PET films were bonded together, and electronic components were embedded in the adhesive layer formed by the adhesive to obtain a base material.

Comparative example 1
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 84.5 parts by mass ・Curing material 15 parts by mass ・Slip material A 0.5 parts by mass ・MEK 200 parts by mass ・Toluene 200 parts by mass

Comparative example 2
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 77 parts by mass ・Curing material 13 parts by mass ・Slip material A 10 parts by mass ・MEK 200 parts by mass ・Toluene 200 parts by mass

Comparative example 3
The composition of the coating solution for forming the second receptor layer was changed as shown below, and in the preparation of the coating solution, glass beads were used to disperse the slip material so that the average particle size was 10 μm. A thermal transfer image receptor was produced in the same manner as in Example 1 except for this.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material G 3 parts by mass (Polywax 3000, polyethylene wax, manufactured by Toyo Adre Co., Ltd., melting point 129°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Comparative example 4
The composition of the coating solution for forming the second receptor layer was changed as shown below, and in the preparation of the coating solution, glass beads were used to disperse the slip material so that the average particle size was 1 μm. A thermal transfer image receptor was produced in the same manner as in Example 1 except for this.
(Second receptor layer forming coating liquid)
・Resin X1 82.5 parts by mass ・Curing material 14.5 parts by mass ・Slip material H 3 parts by mass (Polywax 3000, polyethylene wax, manufactured by Toyo Adre Co., Ltd., melting point 129°C)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Comparative example 5
A thermal transfer image receptor was produced in the same manner as in Example 1, except that the composition of the second receptor layer forming coating liquid was changed as described below.
(Second receptor layer forming coating liquid)
・Resin X1 85 parts by mass ・Curing material 15 parts by mass ・MEK 200 parts by mass ・Toluene 200 parts by mass

<<Measurement of surface roughness (Ra) before micro-scratch test>>
The surface roughness (Ra) of the second receptor layer of the thermal transfer image receptors obtained in the above Examples and Comparative Examples was measured in accordance with JIS B 0601, and the measurement results are summarized in Table 1.

<<Measurement of surface roughness (Sa) before and after micro-scratch test>>
The surface roughness Sa of the second receptor layer of the thermal transfer image receptor obtained in the above Examples and Comparative Examples was measured using a surface roughness measuring device (Shape Measuring Laser Microscope VK-8710 manufactured by Keyence Corporation). , was measured in accordance with ISO 25178, and the measurement results are summarized in Table 1.
The second receptor layer was subjected to a microscratch test in accordance with JIS R 3255 using a microscratch tester (CSR-2000, manufactured by Resca Co., Ltd.) under the following conditions. After the microscratch test, the surface roughness (Sa) of the second receptor layer was similarly measured in accordance with ISO 25178, and the measurement results are summarized in Table 1.
(Measurement condition)
・Scratch speed: 10μm/sec ・Indenter tip diameter: 15μm
・Excitation amplitude 100μm
・Measurement end load: 25mN
・Measurement end time: 60 seconds

<<Measurement of dynamic friction coefficient>>
The coefficient of dynamic friction of the second receptor layer included in the thermal transfer image receptors obtained in the above Examples and Comparative Examples was measured in accordance with JIS K 7125, and the measurement results are summarized in Table 1.

<<Release evaluation>>
The dye layer of the thermal transfer sheet produced by the following method and the second receptor layer of the thermal transfer image receptor obtained in the above Examples and Comparative Examples were superimposed, and a print was produced using a printer under the following conditions.
After image formation, the tensile strength (peel force) when peeling the sublimation type thermal transfer sheet from the thermal transfer image receptor at a peeling angle of 50° is determined by the tensile strength (peel force) provided between the thermal transfer sheet take-up roll and the thermal head in the printer. It was measured using a tension meter (manufactured by Okura Industry Co., Ltd., ASK-100) and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: Peeling force was 2.94 N/cm or less.
NG: Peeling force was greater than 2.94 N/cm.

(Preparation of thermal transfer sheet)
A 4.5 μm thick PET film that has been treated for easy adhesion is prepared as a base material, and on one side of this film, a coating solution for forming a back layer having the following composition is applied and dried to form a back layer with a thickness of 0.8 μm. was formed.
A primer layer coating solution having the following composition was applied to the other side of the base material and dried to form a primer layer with a thickness of 0.1 μm.
Next, a coating liquid for forming a yellow dye layer, a coating liquid for forming a magenta dye layer, and a coating liquid for forming a cyan dye layer having the following compositions were sequentially applied onto the primer layer and dried to form a dye layer with a thickness of 0.6 μm. Layers were formed one after the other to obtain a thermal transfer sheet.
<Coating liquid for forming back layer>
・Polyvinyl acetal 60.8 parts by mass (Sekisui Chemical Co., Ltd., S-LEC (registered trademark) KS-1)
・Isocyanate curing agent 4.2 parts by mass (DIC Corporation, Burnock (registered trademark) D750)
・Filler (zinc stearyl phosphate) 10 parts by mass (manufactured by Sakai Chemical Industry Co., Ltd., purified LBT1830)
・Filler (zinc stearate) 10 parts by mass (manufactured by Sakai Chemical Industry Co., Ltd., SZ-PF)
・Filler (polyethylene wax) 3 parts by mass (Polywax 3000, manufactured by Toyo Adre Co., Ltd.)
・Filler (ethoxylated alcohol-denatured wax) 7 parts by mass (Unitox (registered trademark) 750, manufactured by Toyo Adre Co., Ltd.)
・Toluene 200 parts by mass ・MEK 100 parts by mass <Coating liquid for forming primer layer>
・Alumina sol (average primary particle size 10 x 100 nm (solid content 10%)) 30 parts by mass (Nissan Chemical Co., Ltd., Alumina Sol 200)
・Polyvinylpyrrolidone (PVP) 3 parts by mass (ISP Japan, K-90)
・50 parts by mass of water ・17 parts by mass of isopropanol (IPA) <Coating liquid for forming yellow dye layer>
・Disperse Yellow 201 4 parts by mass ・Polyvinyl acetal 3.5 parts by mass (Sekisui Chemical Co., Ltd., S-LEC (registered trademark) KS-5)
・Polyethylene wax 0.1 parts by mass ・MEK 45 parts by mass ・Toluene 45 parts by mass <Coating liquid for forming magenta dye layer>
・Disperse Red 60 1.5 parts by mass ・Disperse Violet 26 2 parts by mass ・Polyvinyl acetal 4 parts by mass (Sekisui Chemical Co., Ltd., S-LEC (registered trademark) KS-5)
・Polyethylene wax 0.1 parts by mass ・MEK 45 parts by mass ・Toluene 45 parts by mass <Coating liquid for forming cyan dye layer>
・Solvent Blue 63 2 parts by mass ・Disperse Blue 354 2 parts by mass ・Polyvinyl acetal 3.5 parts by mass (Sekisui Chemical Co., Ltd., S-LEC (registered trademark) KS-5)
・Polyethylene wax 0.1 parts by mass ・MEK 45 parts by mass ・Toluene 45 parts by mass

(About the printer)
Thermal head: KEE-57-12GAN2-STA (manufactured by Kyocera Corporation)
Heating element average resistance value: 3303Ω
Main scanning direction print density: 300dpi
Sub-scanning direction print density: 300dpi
Print voltage: 27V
Line period: 1.0msec. /line
Printing start temperature: 35℃
Pulse duty ratio: 85%
Printing start temperature: 29-36℃
Distance from heating point to release plate: 4.5mm
Conveyance speed: 84.6mm/sec.
Printing pressure: 7~8kgf

<<Abrasion resistance evaluation>>
The first receptor layer and the second receptor layer of the thermal transfer image receptor obtained in the above Examples and Comparative Examples are overlapped with the ink side of the ink sheet for sublimation type thermal transfer recording, and a thermal head is used from the ink sheet side. output 0.23W/dot, pulse width 0.3~4.5msec. A face image was formed on the image-receiving layer by heating at a dot density of 16 dots/mm to obtain a print.
The prints thus obtained were visually confirmed and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: No scratches were observed on the surface of the print.
B: A few scratches were observed on the surface of the print, but they were of a level that caused no practical problems.
NG: Many scratches were observed on the surface of the print, which was a practical problem.

<<Image storage stability evaluation>>
The prints prepared in the above scratch resistance evaluation were placed in an oven at 60° C. and stored for 7 days. The printed matter after storage was visually confirmed and evaluated based on the following criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: There was no blur in the image and it was clear.
B: A little blurring was observed in the image, but it was of a level that caused no practical problems.
NG: Bleeding occurred in the image.

<<Image density evaluation>>
Images were formed on the first and second receptor layers of the thermal transfer image receptors obtained in Examples and Comparative Examples using the printer and thermal transfer sheet used in the mold release evaluation.
The optical reflection density of the formed image was measured using an optical densitometer (SpectroLino, manufactured by X-Rite), and the maximum value was taken as the image density and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: Image density was 1.4 or higher.
NG: Image density was less than 1.4.

<<Blocking resistance evaluation>>
The thermal transfer image receptors obtained in the above Examples and Comparative Examples were cut into a size of 5 cm x 5 cm to prepare two test pieces each. The test pieces were stacked one on top of the other so that the second receptor layer was in contact with the base material on the other side, and stored in an oven at 50° C. for 24 hours while applying a load of 2 kg/cm ² . After storage, the test pieces were peeled off by hand and evaluated according to the following criteria.
(Evaluation criteria)
A: The test pieces could be easily peeled off from each other.
NG: The test pieces felt heavy and it was difficult to separate the test pieces from each other. Or it could not be removed.

<<Print omission evaluation>>
A monochromatic cyan image (205/255 image tone) was created on the first image receiving layer and second receiving layer of the thermal transfer image receptors obtained in the above Examples and Comparative Examples to obtain prints. This printed matter was visually confirmed and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: No occurrence of print omission was observed.
B: A small amount of printing omission was observed, but it was not a problem for practical use.
NG: Occurrence of print omission was observed.

<<Evaluation of adhesion with protective layer>>
On the second receptor layer of the thermal transfer image receptor obtained in the above Examples and Comparative Examples, the protective layer of the protective layer transfer sheet produced by the following method was transferred using a heat roller under the following conditions.
(Transfer conditions)
Heat roller temperature: 180℃
Transfer speed: 1464mm/min

Next, a mending tape was attached to the protective layer and peeled off at 90°. The surface of the mending tape after peeling was visually confirmed and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: No adhesion of the protective layer was observed on the surface of the mending tape, and good adhesion between the protective layer and the second receptor layer was confirmed.
NG: Adhesion of the protective layer was observed on the surface of the mending tape.

(Preparation of protective layer transfer sheet)
A PET film with a thickness of 25 μm is used as the base material, and a coating solution for forming a release layer with the following composition is applied on one side of the base material and dried to form a release layer with a thickness of 0.5 μm. did.
<Coating liquid for forming release layer>
・Acrylic resin 95 parts by mass (Dyanal (registered trademark) BR-87, manufactured by Mitsubishi Chemical Corporation)
・Polyester 5 parts by mass (manufactured by Toyobo Co., Ltd., Byron (registered trademark) 200)
・MEK 200 parts by mass ・Toluene 200 parts by mass

Next, a coating solution for forming a protective layer having the following composition was applied onto the release layer, and after drying, a total of Ultraviolet rays were irradiated at a cumulative exposure dose of 221 mJ/cm ² to form a protective layer with a thickness of 4.5 μm.
<Coating liquid for forming protective layer>
・18 parts by mass of polyfunctional acrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., NK Ester A-9300)
・Urethane acrylate 18 parts by mass (manufactured by Shin Nakamura Chemical Co., Ltd., NK Oligomer EA1020)
・10 parts by mass of urethane acrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., NK Ester U-15HA)
・Reactive binder (contains unsaturated group) 4 parts by mass (manufactured by Shin Nakamura Chemical Co., Ltd., NK Polymer C24T)
・Filler (volume average particle diameter 0.7 μm) 10 parts by mass (manufactured by Momentive Performance Materials Japan, XC99-A8808)
・Filler (volume average particle diameter 12 nm) 34 parts by mass (Nissan Chemical Co., Ltd., MEK-AC2140Z)
・Surfactant (acrylic surfactant) 1 part by mass (Kusumoto Chemical Co., Ltd., LF-1984)
・Photopolymerization initiator 5 parts by mass (BASF Japan, Irgacure (registered trademark) 184)
・MEK 100 parts by mass ・Toluene 100 parts by mass

Next, a coating solution for forming a primer layer having the following composition was applied onto the protective layer and dried to form a primer layer having a thickness of 0.8 μm.
<Coating liquid for forming primer layer>
・Polyester 3.3 parts by mass (manufactured by Toyobo Co., Ltd., Byron (registered trademark) 200)
- Vinyl chloride-vinyl acetate copolymer 2.7 parts by mass (Solvine (registered trademark) CNL, manufactured by Nissin Chemical Industry Co., Ltd.)
・Polyisocyanate curing agent 1.5 parts by mass (Mitsui Chemicals, Inc., Takenate (registered trademark) D110N)
・MEK 6.7 parts by mass ・Toluene 3.3 parts by mass

Next, on the primer layer, a coating liquid for forming an adhesive layer having the following composition was applied and dried to form an adhesive layer with a thickness of 0.6 μm, thereby obtaining a protective layer transfer sheet.
<Coating liquid for adhesive layer formation>
・Modified polyolefin 31.5 parts by mass (Unitika Co., Ltd., Arrowbase (registered trademark) SQ1221NQ)
・(Meth)acrylic resin (Tg: 76°C) 3.5 parts by mass (manufactured by Toagosei Co., Ltd., Jurimer (registered trademark) AT-613)
・Water 36 parts by mass ・IPA 18 parts by mass

10: thermal transfer image receptor, 11: base material, 12: first receptor layer, 13: second receptor layer, 14: first base material, 15: adhesive layer, 16: second base material, 17: Electronic components, 18: IC chip, 19: Antenna body

Claims (8)

comprising a base material, a first receptive layer located on the base material , and a second receptive layer located on the first receptive layer ,
The first receptor layer has a thickness of 3 μm or more and 15 μm or less, and contains polyvinyl butyral as a vinyl resin and an isocyanate compound as a hardening agent,
The second receptor layer has a thickness of 0.3 μm or more and 3 μm or less, and includes a resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group, a curing material, and a slipping material,
The slip material has an average particle diameter of 2 μm or more and 9 μm or less,
A thermal transfer image receptor, wherein the content of the slip material in the second receptor layer is 1% by mass or more and 8% by mass or less. The thermal transfer image receptor according to claim 1, wherein the slip material is a polyolefin wax. The resin having an aromatic hydrocarbon group, an aliphatic hydrocarbon group, and a hydroxyl group comprises a unit (a) having an aromatic hydrocarbon group, a unit (b) having an aliphatic hydrocarbon group, and a unit (c) having a hydroxyl group. The thermal transfer image receptor according to claim 1 or 2, comprising: The thermal transfer image receiving device according to any one of claims 1 to 3, wherein the image forming surface of the second receptor layer has a surface roughness (Ra) of 0.01 μm or more and 0.2 μm or less before the microscratch test. body. The thermal transfer image receiving device according to any one of claims 1 to 4, wherein the image forming surface of the second receptor layer has a surface roughness (Sa) of 0.01 μm or more and 0.2 μm or less after a microscratch test. body. The thermal transfer image receptor according to any one of claims 1 to 5, wherein the image forming surface of the second receptor layer has a dynamic friction coefficient of 0.3 or more and 0.8 or less. The base material includes a first base material, an adhesive layer, and a second base material,
The thermal transfer image receptor according to any one of claims 1 to 6, wherein electronic components are embedded in the adhesive layer. A printed matter comprising the thermal transfer image receptor according to any one of claims 1 to 7 and a protective layer.