JP2002356067A - Composition, thermal transfer image receiving sheet using the composition, and manufacturing method for the sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving layer composition giving a dye receiving layer excellent in a reaction speed of a release agent, a coat strength of a release layer and releasability from a thermal transfer sheet, a manufacturing method of a thermal transfer image receiving sheet using the composition, and the thermal transfer image receiving sheet. SOLUTION: The manufacturing method for the thermal transfer image receiving sheet comprises formation of the dye receiving layer at least on one side of a base sheet and formation of the release layer on the surface of the dye receiving layer. The release layer is constituted of a catalyst cured type release agent and a curing catalyst. On the occasion of forming the dye receiving layer, either the release agent or the curing catalyst is made to be contained in a coating solution for the dye receiving layer, and after this layer is formed, either the curing catalyst or the release agent is applied on the surface of the dye receiving layer so as to form the release layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer image-receiving sheet, and more particularly, to a receptor layer composition which provides a dye-receiving layer having excellent coating strength of a release layer and excellent releasability from the thermal transfer sheet. The present invention relates to a method for producing a thermal transfer image receiving sheet using the same and a thermal transfer image receiving sheet.

[0002]

2. Description of the Related Art Conventionally, various thermal transfer methods are known. Among them, a sublimable dye is used as a recording material, and this is carried on a base sheet such as paper or a plastic film to form a thermal transfer sheet. Methods for forming various full-color images on paper or plastic film provided with a layer have been proposed.

In this case, a thermal head of a printer is used as a heating means, and a large number of color dots of three or four colors are transferred to a thermal transfer image receiving sheet by heating for a very short time, and an original is formed by the multicolored dots. Is reproduced.

[0004]

In the above thermal transfer method,
In forming an image, the dye layer of the thermal transfer sheet and the dye receiving layer of the thermal transfer image receiving sheet are overlapped with each other and heated by a thermal head to transfer the dye to the dye receiving layer. Since both are formed of a thermoplastic resin, there is a problem in that the two are fused during thermal transfer, making it difficult to peel off, or the formed image is damaged.

As a method for solving such a problem, there has been proposed a method in which a release agent is added to a dye-receiving layer, and the release agent bleeds out to the surface of the dye-receiving layer to form a release layer.

If a liquid or waxy release agent is used in such a method, there is a problem that these release agents contaminate other articles or discoloration of an image occurs. A method using a mold release agent has been proposed.

According to this method, after the formation of the dye receiving layer,
The heat treatment causes the release agent contained in the dye receiving layer to bleed out to the surface of the dye receiving layer, and a crosslinked thin film of the release agent is formed on the surface of the dye receiving layer. It takes a long time and the productivity is low, and the crosslinked film has a weak coating film strength and lacks abrasion resistance and the like. Further, as an example of the reactive silicone, there is one described in Japanese Patent Application No. 3-87424, which is a reaction between vinyl groups and has a problem that their reactivity is low.

Further, there has been known an image receiving member having a specific silicone crosslinked film formed on the surface of a receiving layer (Japanese Patent Application Laid-Open No. Sho 6 (1994)).
2-116189), which is not always satisfactory.

Accordingly, an object of the present invention is to provide a receiving layer composition which provides a dye receiving layer excellent in the reaction rate of a release agent, the coating strength of a release layer, and the releasability from a thermal transfer sheet. An object of the present invention is to provide a method for producing a thermal transfer image receiving sheet to be used and the thermal transfer image receiving sheet.

[0010]

The above object is achieved by the present invention described below.

That is, a first aspect of the present invention is a composition for a release layer, comprising a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components in a liquid medium, and a dye-receiving resin. A composition for a dye receiving layer comprising a reactive silicone, a reaction catalyst, and a reaction inhibitor as essential components in a liquid medium, and a method for producing a thermal transfer image-receiving sheet using the composition.

When forming a dye receiving layer or a release layer, a coating liquid is prepared by using an ink characterized by containing a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components in a liquid medium. In this state, the reaction of the release agent is sufficiently suppressed, and the reaction rate sharply increases during the heat treatment after the formation of the dye receiving layer or the release layer, so that the image receiving sheet can be manufactured with high productivity. And a thermal transfer image-receiving sheet having a dye-receiving layer having excellent coating strength of the release layer and excellent release properties of the thermal transfer sheet.

According to a second aspect of the present invention, there is provided a method for producing a thermal transfer image-receiving sheet comprising forming a dye-receiving layer on at least one surface of a base sheet and a release layer on the surface thereof, wherein the release layer is a catalyst-curable type. It comprises a release agent and a curing catalyst, and at the time of forming the dye receiving layer, one of the release agent and the curing catalyst is contained in the coating solution for the dye receiving layer. A method for producing a thermal transfer image-receiving sheet, characterized in that a release layer is formed by applying either a catalyst or a release agent, and a dye-receiving layer on at least one surface of a base sheet and release on the surface thereof The method for producing a thermal transfer image-receiving sheet comprising forming a layer, wherein the release layer comprises a catalyst-curable release agent and a curing catalyst, and after the formation of the dye-receiving layer, the coating liquid containing the release agent and the curing Coating solution containing catalyst One of them is applied to the surface of the dye receiving layer, and then one of a coating liquid containing a curing catalyst or a coating liquid containing a release agent is applied to form a release layer. This is a method for producing a thermal transfer image receiving sheet.

In forming a release layer comprising a catalyst-curable release agent and a curing catalyst on the surface of the dye-receiving layer, the use of the release agent and the curing catalyst separately allows the coating strength of the release layer to be improved. A thermal transfer image-receiving sheet having a dye-receiving layer having excellent releasability from the thermal transfer sheet can be manufactured with high productivity.

The composition for a release layer, the composition for a dye receiving layer, and the method for producing a thermal transfer image-receiving sheet using these compositions according to the present invention are at least one of a base sheet In the thermal transfer image-receiving sheet having a dye-receiving layer formed on the surface thereof, a heat-transfer image-receiving sheet in which a release agent mixture comprising an addition-polymerizable silicone and a hydrogen-modified silicone is added in the receiving layer can be obtained. Further, as another embodiment, in a thermal transfer image-receiving sheet having a dye receiving layer formed on at least one surface of a base sheet, a release layer comprising an addition-polymerizable silicone and a hydrogen-modified silicone is provided on the surface of the receiving layer. A formed thermal transfer image-receiving sheet can also be used. Accordingly, by using a mixture of a specific reactive silicone as a release agent, a thermal transfer having a dye receiving layer excellent in the reaction speed of the release agent, the coating strength of the release layer and the release property of the thermal transfer sheet. An image receiving sheet can be provided.

Next, the present invention will be described in more detail with reference to preferred embodiments.

The first object of the present invention is that the reaction of the release agent is sufficiently suppressed in the state of the coating liquid, and the reaction rate is increased during the heat treatment after the formation of the dye receiving layer or the release layer. And the ink for the release layer, which provides a dye receiving layer having excellent productivity of the image receiving sheet, excellent coating film strength of the release layer and excellent releasability from the thermal transfer sheet, and an ink for the release layer. Is to provide a method for producing a thermal transfer image-receiving sheet using the same.

The composition for a release layer of the present invention is characterized by containing a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components in a liquid medium.

The composition for a dye-receiving layer of the present invention is characterized in that the liquid medium contains a dye-receiving resin, a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components.

Preferred reactive silicones used in the present invention include, for example, epoxy-modified, alkyl-modified, amino-modified, carboxyl-modified, alcohol-modified, fluorine-modified, alkyl-aralkyl polyether-modified,
Modified silicone oils such as polyether-modified, polyether-modified, addition-polymerizable silicone, and hydrogen-modified silicone are exemplified.

These reactive silicone oils are, for example, a combination of amino-modified and epoxy-modified,
Although it is preferable to use compounds that react with each other, for example, they may be used in a mode in which the same compounds are reacted via a crosslinking agent such as polyisocyanate, such as amino-modified or alcohol-modified silicone. A particularly preferred combination is a combination of an addition-polymerizable silicone and a hydrogen-modified silicone.

In the present invention, particularly preferred addition-polymerizable silicones include, for example, the following compounds.

[0023]

Embedded image (In the above formula, R is mainly a methyl group, but is another alkyl group or an aryl group such as a phenyl group or a combination thereof. L + m + n is an integer of 1 or more, and each siloxane unit is randomly arranged. At least one of X, Y and Z is an addition polymerizable group such as a vinyl group, an allyl (-CH2-CH = CH2) group or a (meth) acryloyl group;
3 is a single bond or an alkylene group. The molecular weight of the above addition-polymerizable silicone is not particularly limited, but is generally preferably in the range of 3,500 to 20,000. These addition polymerizable silicones are commercially available and can be easily used in the present invention.

The hydrogen-modified silicone preferably used in the present invention is a compound represented by the formula
At least one of -X, -R2-YZ, and -R3-Y is a hydrogen atom, and other substituents, arrangement of siloxane units, molecular weight, and the like are the same as those in the above general formula. . These addition polymerizable silicones are commercially available and can be easily used in the present invention.

The proportion of the addition-polymerizable silicone and the hydrogen-modified silicone used is determined by the molar ratio of the reactive groups of both, and the ratio of the former to the latter is from 4: 1 to 1: 4, especially from 1: 1 to 1: 1. : 3 is preferable, and if it is out of this range, satisfactory performance cannot be obtained in terms of a decrease in releasability, a decrease in coating film strength, and a deterioration in storage stability due to unreacted reactive groups.
The release agent mixture is preferably used in an amount of about 2 to 20 parts by weight per 100 parts by weight of the dye-receiving layer-forming resin.

When the reactive silicone alone does not sufficiently react, it is necessary to use a catalyst in order to sufficiently react it. As the curing catalyst used together with the release agent, it is preferable to use a curing catalyst suitable for the selected reactive silicone or a combination thereof.For example, various radical-generating polymerization catalysts, platinum-based catalysts and the like are used. Particularly, platinum-based catalysts are suitable. The catalyst is about 5-200 per 100 parts by weight of reactive silicone.
A preferred amount is about parts by weight.

When the reactive silicone and the catalyst coexist, the reaction proceeds even at room temperature, and the progress of the reaction in the coating liquid causes a decrease in the releasability, and also the preservability and handling of the coating liquid. A problem arises in sex. In the present invention, in order to solve such a problem, a reaction inhibitor which has an effect of suppressing the reaction of the reactive silicone at room temperature and which eliminates the effect of the reaction during heat treatment is used. The reaction inhibitor used in the present invention suppresses the action of the curing catalyst on the reactive silicone in the state of a solvent solution, and cures in a heated state or in a state in which the solvent is volatilized, that is, in a heated or dried state. It is a material that does not suppress, but rather promotes the action of the catalyst. Examples of such a curing inhibitor include a silylated product of acetylene alcohol. These reaction inhibitors can be obtained from the market and used. Such a reaction inhibitor is used in an amount of about 5 per 100 parts by weight of the reactive silicone.
Preferably, it is used in a proportion of 100 parts by weight.

As the liquid medium of the composition for dissolving or dispersing the above essential components, any of organic solvents used in general gravure compositions can be used, for example, methyl ethyl ketone, toluene, xylene, ethyl acetate, and the like.
Preferred are cellosolves, methyl isobutyl ketone, and mixed solvents thereof.

The ink composition for a release layer of the present invention comprises the above-mentioned components as essential components, and the above-mentioned essential components generally have a solid content concentration of about 10 to 40% by weight. The method for producing the release layer ink itself can be easily prepared by uniformly mixing and dissolving each component in the ink medium. Hereinafter, the coating composition is also referred to as “ink” according to the usage in the art.

In the present invention, in order to improve the coating properties of the release layer formed in the ink, a dye-receptive thermoplastic resin as described below is added in an amount of about 4 to 50 per 1 part by weight of the reactive silicone. It can be added in the range of parts by weight. Also, a high concentration of dye-accepting resin as a binder component,
For example, about 100 to 50 per 100 parts by weight of the release agent component
By adding at a ratio of 00 parts by weight, the ink can be used as an ink for forming a dye-receiving layer, and in this case, a good releasability is imparted to the dye-receiving layer simultaneously with the formation of the dye-receiving layer. be able to.

As the base sheet used in the production of the thermal transfer image-receiving sheet of the present invention, synthetic paper (polyolefin, polystyrene, etc.), high quality paper, art paper, coated paper, cast coated paper, wallpaper, backing paper, synthetic paper Resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internal paper, paperboard, etc., film or sheet of various plastics such as cellulose fiber paper, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate, etc. Can be used,
In addition, a white opaque film formed by adding a white pigment or a filler to these synthetic resins or a foamed foam sheet can be used, and there is no particular limitation.

Also, a laminate formed by any combination of the above-mentioned base sheets can be used. Examples of typical laminates include synthetic paper of cellulose fiber paper and synthetic paper or cellulose fiber paper and plastic film or sheet. The thickness of these base sheets may be arbitrary, and for example, a thickness of about 10 to 300 μm is generally used. When the substrate sheet as described above has poor adhesion to the dye-receiving layer formed on its surface, it is preferable to apply a primer treatment or a corona discharge treatment to its surface.

The dye receiving layer formed on the surface of the base sheet receives the sublimable dye transferred from the thermal transfer sheet and maintains the formed image. As the resin for forming the dye receiving layer, for example, polyolefin resins such as polypropylene, polyvinyl chloride, halogenated polymers such as polyvinylidene chloride, polyvinyl acetate, vinyl polymers such as polyacrylester, polyethylene terephthalate, Polyester resins such as polybutylene terephthalate, polystyrene resins, polyamide resins, copolymer resins of olefins such as ethylene and propylene and other vinyl monomers, ionomers, cellulose resins such as cellulose diacetate, polycarbonates and the like. Particularly preferred are vinyl resins and polyester resins.

In the method for producing a thermal transfer image-receiving sheet of the present invention, at least one surface of the above-mentioned base sheet is coated with the above-mentioned resin, an essential component in the above-mentioned ink for receiving layer of the present invention, and other necessary additives. Is added or dissolved in an appropriate organic solvent or dispersed in an organic solvent or water, for example, by a gravure printing method, a screen printing method, or a forming means such as a reverse roll coating method using a gravure plate. It is obtained by coating, drying and heating to form a dye receiving layer. At this time, at least a part of the release agent contained in the dye receiving layer bleeds out on the surface of the dye receiving layer due to drying and heating of the coating solution, and the release agent mixture inside the dye receiving layer and on the surface undergoes some reaction. As a result, a release layer is formed on the surface of the dye receiving layer.

In the formation of the dye receiving layer, titanium oxide, zinc oxide, kaolin clay, calcium carbonate, fine powder silica and the like are used for the purpose of improving the whiteness of the dye receiving layer to further enhance the sharpness of the transferred image. Pigments and fillers can be added.

The dye-receiving layer formed as described above may have any thickness, but generally has a thickness of 1 to 50 μm.
Further, such a dye receiving layer is preferably a continuous coating, but may be formed as a discontinuous coating using a resin emulsion or a resin dispersion.

In another embodiment of the present invention, the dye-receiving layer is formed once without adding the essential components of the above-mentioned ink for the release layer to the coating solution for the receiving layer. The release layer can be formed by applying, drying and heat-curing the release layer ink.

The method of forming the release layer itself may be the same as the formation of the dye-receiving layer, such as application of a coating liquid for the release layer, drying and heating, and aging. The thickness of the formed release layer is 0.01 to 20 μm. Is preferable.

The image-receiving sheet of the present invention can be applied to various uses such as a heat-transferable heat-transferable sheet, cards, and a sheet for making a transparent original by appropriately selecting a base sheet.

Further, in the image receiving sheet of the present invention, a cushion layer can be provided between the base sheet and the dye receiving layer, if necessary. By providing such a cushion layer, an image can be formed with less noise during printing. An image corresponding to the information can be transferred and recorded with good reproducibility.

Examples of the material constituting the cushion layer include polyurethane resin, acrylic resin, polyethylene resin, butadiene rubber, and epoxy resin. The thickness of the cushion layer is preferably about 2 to 20 μm.

Further, a lubricating layer may be provided on the back surface of the base sheet. Examples of the material of the lubricating layer include a methacrylate resin such as methyl methacrylate or a corresponding acrylate resin, and a vinyl resin such as a vinyl chloride-vinyl acetate copolymer.

Further, it is possible to provide a detection mark on the image receiving sheet. The detection mark is extremely convenient when positioning the thermal transfer sheet and the image receiving sheet. For example, a detection mark that can be detected by the photoelectric tube detection device can be provided on the back surface of the base sheet by printing or the like.

The thermal transfer sheet used when performing thermal transfer using the thermal transfer image-receiving sheet of the present invention as described above is one in which a dye layer containing a sublimable dye is provided on paper or a polyester film. Any thermal transfer sheet can be used as it is in the present invention.

As a means for applying thermal energy at the time of thermal transfer, any conventionally known applying means can be used.
By controlling the recording time with a recording device such as a thermal printer (for example, Video Printer VY-100 manufactured by Hitachi, Ltd.), 5 to 100 mJ / m
By applying heat energy of about m ² , the intended purpose can be sufficiently achieved.

Second Invention Next, the present invention according to the second embodiment will be described in detail.

The base sheet used for producing the thermal transfer image-receiving sheet of the present invention includes synthetic paper (polyolefin, polystyrene, etc.), woodfree paper, art paper, coated paper, cast-coated paper, wallpaper, backing paper, synthetic paper Resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internal paper, paperboard, etc., film or sheet of various plastics such as cellulose fiber paper, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate, etc. Can be used,
In addition, a white opaque film formed by adding a white pigment or a filler to these synthetic resins or a foamed foam sheet can be used, and there is no particular limitation.

Further, a laminate formed by any combination of the above-mentioned base sheets can also be used. Examples of typical laminates include synthetic paper of cellulose fiber paper and synthetic paper or cellulose fiber paper and plastic film or sheet. The thickness of these base sheets may be arbitrary, and for example, a thickness of about 10 to 300 μm is generally used. When the substrate sheet as described above has poor adhesion to the dye-receiving layer formed on its surface, it is preferable to apply a primer treatment or a corona discharge treatment to its surface.

The dye-receiving layer formed on the surface of the base sheet is for receiving the sublimable dye transferred from the thermal transfer sheet and maintaining the formed image. Examples of the resin for forming the dye receiving layer include polyolefin resins such as polypropylene, halogenated polymers such as polyvinyl chloride and polyvinylidene chloride, vinyl polymers such as polyvinyl acetate and polyacrylester, polyethylene terephthalate, and poly (ethylene terephthalate). Polyester resins such as butylene terephthalate, polystyrene resins, polyamide resins, copolymer resins of olefins such as ethylene and propylene with other vinyl monomers, ionomers, cellulose resins such as cellulose diacetate, and polycarbonate. Particularly preferred are vinyl resins and polyester resins.

In one embodiment of the thermal transfer image-receiving sheet of the present invention, at least one surface of the base sheet is provided with one of a catalyst-curable release agent and a curing catalyst on the resin for the dye-receiving layer as described above. A dispersion obtained by adding an essential component and adding other necessary additives to an appropriate organic solvent as described below, or dispersing in an organic solvent or water, for example, a gravure printing method or a screen printing method By applying, drying and heating by a forming means such as a reverse roll coating method using a gravure plate, a catalyst-curable release agent or a curing catalyst contained in the dye-receiving layer is bleed out to the surface of the dye-receiving layer. By coating a coating liquid containing a curing catalyst or a catalyst-curable release agent on the surface of the bleed-out catalyst-curable release agent or curing catalyst, To form a releasing layer cured on the surface.

In another embodiment of the present invention, a dye-receiving layer is formed on the surface of a substrate sheet in the same manner as in the prior art, and a coating containing a catalyst-curable release agent is formed on the surface of the dye-receiving layer. A coating liquid containing a liquid or a curing catalyst is applied, and then either a coating liquid containing a curing catalyst or a coating liquid containing a release agent is applied to form a release layer.

On the other hand, in the prior art, since both the catalyst-curing release agent and the curing catalyst were added to the coating solution for the dye receiving layer, the stability of the coating solution was poor, and During the formation of the layer, the catalyst-curable release agent and the curing catalyst reacted, and the bleed-out of the release agent to the surface was insufficient. In the present invention, such disadvantages of the prior art are sufficiently solved.

The dye-receiving layer formed as described above may have any thickness, but generally has a thickness of 1 to 50 μm.
Further, such a dye receiving layer is preferably a continuous coating, but may be formed as a discontinuous coating using a resin emulsion or a resin dispersion.

In the formation of the dye receiving layer, titanium oxide, zinc oxide, kaolin clay, calcium carbonate, fine powder silica, etc. are used for the purpose of improving the whiteness of the dye receiving layer to further enhance the sharpness of the transferred image. Pigments and fillers can be added.

As the catalyst-curable release agent used in the present invention, any of those used in the prior art can be used. Preferred release agents include, for example, epoxy-modified, alkyl-modified and Amino-modified, carboxyl-modified, alcohol-modified, fluorine-modified, alkyl aralkyl polyether-modified, epoxy / polyether-modified, polyether-modified, addition-polymerizable silicone, modified silicone oils such as hydrogen-modified silicone, and the like. Among these, a combination of an addition-polymerizable silicone and a hydrogen-modified silicone is preferred.

Catalyst used in the present invention These reactive silicone oils are preferably used in combination with compounds that react with each other, for example, a combination of amino-modified and epoxy-modified. They may be used in such a manner that they are reacted with each other via a cross-linking agent such as polyisocyanate, such as silicone or alcohol-modified silicone.

As the curing catalyst used in the present invention, a platinum-based catalyst, a radical-generating catalyst and the like are used, and a platinum-based catalyst is particularly suitable.

The ratio of the release agent used is as follows.
2 to 30 parts by weight per 100 parts by weight, and
The amount of the curing catalyst used is 4 to 12 per 100 parts by weight of the release agent.
A ratio of 0 parts by weight is a preferable ratio.

In the present invention, when a catalyst-curable release agent is contained in the coating solution for the dye-receiving layer, a coating solution containing a curing catalyst is applied onto the release agent bleed out on the surface of the dye-receiving layer. To form a cured release layer.
As the liquid medium of the coating liquid for dissolving or dispersing the curing catalyst, any organic solvent used in general gravure coating liquids can be used, for example, methyl ethyl ketone, toluene, xylene, ethyl acetate, cellosolves ,
Suitable examples include methyl isobutyl ketone and a mixed solvent thereof. In order to improve coating suitability when preparing these coating solutions, the dye-receiving layer-forming resin is used as a binder or a film-forming aid within a range that does not impair the release property of the formed release layer. can do.

In the present invention, when a curing catalyst is contained in the coating liquid for the dye receiving layer, the coating catalyst containing a catalyst-curable mold release agent is applied to the surface of the dye receiving layer by applying the bleed-out curing catalyst. To form a cured release layer.
As the liquid medium of the coating liquid for dissolving or dispersing the catalyst-curable release agent, the same organic solvent as described above is used, and the dye-receiving layer-forming resin is used as a binder or a film-forming auxiliary as described above. can do.

In another embodiment of the present invention,
After the dye receiving layer is once formed, a cured release layer is formed using the coating liquid containing the release agent and the coating liquid containing the curing agent as described above. The respective coating liquids used at this time may be the same as those in the above embodiment.

In the method of forming a release layer, a release layer having excellent releasability is easily formed by applying a coating solution containing a curing catalyst or a catalyst-curable release agent, drying and heating, and aging. Is done. The thickness of the formed release layer is 0.01 to 20 μm
Is preferable.

The base sheet used in the present invention includes synthetic paper (polyolefin, polystyrene, etc.), woodfree paper, art paper, coated paper, cast-coated paper, wallpaper, backing paper, synthetic resin or emulsion. Various plastic films or sheets such as impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internal paper, paperboard, etc., cellulose fiber paper, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate, etc. can be used. Further, a white opaque film formed by adding a white pigment or a filler to these synthetic resins or a foamed foamed sheet can be used, and is not particularly limited.

Further, a laminate made of any combination of the above base sheets can also be used. Examples of typical laminates include synthetic paper of cellulose fiber paper and synthetic paper or cellulose fiber paper and plastic film or sheet. The thickness of these base sheets may be arbitrary, and for example, a thickness of about 10 to 300 μm is generally used.

When the substrate sheet as described above has poor adhesion to the dye-receiving layer formed on the surface, it is preferable to subject the surface to primer treatment or corona discharge treatment.

The dye receiving layer formed on the surface of the base sheet is for receiving the sublimable dye transferred from the thermal transfer sheet and maintaining the formed image.

As the resin for forming the dye receiving layer,
For example, polyolefin resins such as polypropylene, polyvinyl chloride, halogenated polymers such as polyvinylidene chloride, polyvinyl acetate, vinyl polymers such as polyacrylester, polyethylene terephthalate, polyester resins such as polybutylene terephthalate, polystyrene resins, Polyamide resins, copolymer resins of olefins such as ethylene and propylene and other vinyl monomers, ionomers, cellulose resins such as cellulose diacetate, polycarbonate and the like, particularly preferred are vinyl resins and polyester resins. Resin.

In the thermal transfer image-receiving sheet of the present invention, a mixture of a specific reactive silicone releasing agent as described below and other necessary additives are added to at least one surface of the base sheet described above. What is dissolved in a suitable organic solvent or dispersed in an organic solvent or water, for example,
It can be obtained by applying, drying and heating by a forming means such as a gravure printing method, a screen printing method and a reverse roll coating method using a gravure plate to form a dye receiving layer. At this time, at least a part of the release agent mixture contained in the dye receiving layer bleeds out to the surface of the dye receiving layer by drying and heating the coating liquid, and the release agent mixture in the inside and on the surface of the dye receiving layer has some A reaction occurs to form a release layer on the surface of the dye receiving layer.

In the formation of the dye receiving layer, titanium oxide, zinc oxide, kaolin clay, calcium carbonate, fine powder silica and the like are used for the purpose of improving the whiteness of the dye receiving layer to further enhance the sharpness of the transferred image. Pigments and fillers can be added.

The dye-receiving layer formed as described above may have any thickness, but generally has a thickness of 1 to 50 μm.
Further, such a dye receiving layer is preferably a continuous coating, but may be formed as a discontinuous coating using a resin emulsion or a resin dispersion.

In the present invention, a silicone compound having an addition-polymerizable group can be used as one of the release agents in order to impart a releasing property to the dye receiving layer, and examples of the release agent include the following compounds. Can be

[0072]

Embedded image (In the above formula, R is mainly a methyl group, but is another alkyl group or an aryl group such as a phenyl group or a combination thereof. L + m + n is an integer of 1 or more, and each siloxane unit is randomly arranged. At least one of X, Y and Z is an addition polymerizable group such as a vinyl group, an allyl (—CH ₂ —CH ＝ CH ₂ ) group or a (meth) acryloyl group;
3 is a single bond or an alkylene group. The molecular weight of the above addition-polymerizable silicone is not particularly limited, but is generally preferably in the range of 3,500 to 20,000. These addition polymerizable silicones are commercially available and can be easily used in the present invention.

In the present invention, the hydrogen-modified silicone used in combination with the above-mentioned addition-polymerizable silicone has at least one of -R1-X, -R2-Z and -R3-Y in the above general formula being a hydrogen atom. The other substituents, the arrangement of siloxane units, the molecular weight, and the like are the same as those in the general formula. These addition-polymerizable silicone and hydrogen-modified silicone are preferably modified with an aryl group such as a phenyl group.

The introduction of an aryl group generally improves the compatibility with a thermoplastic resin. Therefore, when used as a receiving layer or a release layer by mixing with a resin, the ink for forming them becomes cloudy or separate. Less likely to cause problems
In addition, repelling during coating is small, and a good coated surface is easily obtained. In addition, since it is appropriately mixed with the resin, there is an advantage that the obtained coating film strength is improved.

Furthermore, in order to improve the affinity with the disperse dye,
Inhibition of dyeing hardly occurs, and in particular, when coating on the receptor layer, sufficient release properties and dyeing density can be achieved at the same time.

More preferred general formulas of the addition-polymerizable silicone and the hydrogen-modified silicone include the following structural formulas.

[0077]

Embedded image Note that l, m, and n are the same as in the above case.

The content of diphenylsiloxane units is preferably from 5 to 50 mol% based on all siloxane units.

When the content is less than 5 mol%, the compatibility with the resin of the receiving layer is insufficient when the ink is internally added to the receiving layer. There is a problem that a surface cannot be obtained or the coating strength of the receiving layer decreases.

Further, since the bleed-out of silicone is too good, the coefficient of friction on the surface of the receiving layer is greatly reduced, and depending on the printing conditions, problems such as skew during printing and misalignment during three-color printing may occur. There is.

If the content is more than 50 mol%, the compatibility between the silicone and the resin is too high, and the bleed out of the silicone to the surface of the receptor layer is inhibited, so that there is a problem that the releasability is insufficient.

The ratio of the addition-polymerizable silicone to the hydrogen-modified silicone is determined by the molar ratio of the reactive groups of both, and the ratio of the former to the latter is from 4: 1 to 1: 4, particularly from 1: 1 to 1 : 3 is preferable, and if it is out of this range, satisfactory performance cannot be obtained in terms of a decrease in releasability, a decrease in coating film strength, a deterioration in storage stability due to unreacted reactive groups, and the like.
The release agent mixture is preferably used in an amount of about 2 to 20 parts by weight per 100 parts by weight of the dye-receiving layer-forming resin.

When using the above release agent mixture, a curing catalyst suitable for the employed release agent may be used. These curing catalysts are also commercially available, and various radical-generating polymerization catalysts, platinum-based catalysts and the like are used, and platinum-based catalysts are particularly suitable. A preferred amount of the catalyst is about 5 to 200 parts by weight per 100 parts by weight of the reactive silicone release agent. The use of these catalysts is not essential. Depending on the type of the release agent, the reaction of the release agent can be caused only by heating. Further, epoxy-modified silicone or the like can be further added to improve the slipperiness of the thermal transfer image-receiving sheet.

In another embodiment of the present invention, a dye-receiving layer is formed once without adding the above-mentioned release agent mixture to the coating liquid for the receiving layer, and the above-mentioned releasing agent is formed on the surface of the dye-receiving layer. A release layer can also be formed by applying, drying, and heat-curing a coating solution containing a mixture (a curing catalyst if necessary). At this time, an addition-polymerizable silicone is used to improve the applicability of the release layer such as repellency, the adhesion to the receiving layer surface after the release layer is formed, and the permeability of the sublimable dye transferred from the thermal transfer sheet during printing. As described above, the hydrogen-modified silicone must be modified with an aryl group such as a phenyl group. When the silicone modified with the aryl group is used, the affinity for the resin used for the receiving layer and the migrating sublimable dye is improved. Further, for the purpose of improving the film forming property and strength of the formed release layer and improving the dye permeability, about 1 to 50 parts by weight of the thermoplastic resin per 1 part by weight of the release agent mixture is used as a resin binder. Can be used together.

The resin used as the binder is not particularly limited, but is preferably selected from the above-mentioned resins for forming the dye receiving layer. Further, in consideration of the adhesiveness to the receiving layer and the application surface, it is preferable that at least one resin component used in the receiving layer is used as the binder resin of the release layer. Even when a resin binder is used, it is preferable to use aryl-modified silicone in consideration of the affinity for the resin used for the receptor layer and the migrating sublimable dye.

The method of forming the release layer may be the same as the formation of the dye-receiving layer, such as application of a coating liquid for the release layer, drying and heating, and aging. The thickness of the formed release layer is 0.01 to 20 μm. Is preferable.

The image-receiving sheet of the present invention can be applied to various uses such as a heat-transfer-recordable sheet, cards, and a sheet for transmission-type manuscript by appropriately selecting a base sheet.

Further, in the image receiving sheet of the present invention, a cushion layer can be provided between the base sheet and the dye receiving layer, if necessary. By providing such a cushion layer, noise during printing can be reduced and image quality can be reduced. An image corresponding to the information can be transferred and recorded with good reproducibility.

The material constituting the cushion layer includes, for example, polyurethane resin, acrylic resin, polyethylene resin, butadiene rubber, epoxy resin and the like. The thickness of the cushion layer is preferably about 2 to 20 μm.

Further, a lubricating layer can be provided on the back surface of the base sheet. Examples of the material of the lubricating layer include a methacrylate resin such as methyl methacrylate or a corresponding acrylate resin, and a vinyl resin such as a vinyl chloride-vinyl acetate copolymer.

Further, it is possible to provide a detection mark on the image receiving sheet. The detection mark is extremely convenient when positioning the thermal transfer sheet and the image receiving sheet. For example, a detection mark that can be detected by the photoelectric tube detection device can be provided on the back surface of the base sheet by printing or the like.

The thermal transfer sheet used when performing thermal transfer using the thermal transfer image-receiving sheet of the present invention as described above is one in which a dye layer containing a sublimable dye is provided on paper or a polyester film. Any thermal transfer sheet can be used as it is in the present invention.

As the means for applying thermal energy during thermal transfer, any conventionally known means can be used.
By controlling the recording time with a recording device such as a thermal printer (for example, Video Printer VY-100 manufactured by Hitachi, Ltd.), 5 to 100 mJ / m
By applying heat energy of about m ² , the intended purpose can be sufficiently achieved.

The image-receiving sheet of the present invention can be applied to various uses such as a heat-transferable sheet, a card, and a sheet for making a transparent original by appropriately selecting a base sheet.

Further, in the image receiving sheet of the present invention, a cushion layer can be provided between the base sheet and the dye receiving layer, if necessary. By providing such a cushion layer, noise during printing can be reduced. An image corresponding to the information can be transferred and recorded with good reproducibility.

Examples of the material constituting the cushion layer include polyurethane resin, acrylic resin, polyethylene resin, butadiene rubber, and epoxy resin. The thickness of the cushion layer is preferably about 2 to 20 μm.

Further, a lubricating layer may be provided on the back surface of the base sheet. Examples of the material of the lubricating layer include a methacrylate resin such as methyl methacrylate or a corresponding acrylate resin, and a vinyl resin such as a vinyl chloride-vinyl acetate copolymer.

Further, it is possible to provide a detection mark on the image receiving sheet. The detection mark is extremely convenient when positioning the thermal transfer sheet and the image receiving sheet. For example, a detection mark that can be detected by the photoelectric tube detection device can be provided on the back surface of the base sheet by printing or the like.

The thermal transfer sheet used when performing thermal transfer using the thermal transfer image-receiving sheet of the present invention as described above is a paper or polyester film provided with a dye layer containing a sublimable dye. Any thermal transfer sheet can be used as it is in the present invention.

As the means for applying thermal energy at the time of thermal transfer, any conventionally known applying means can be used.
By controlling the recording time with a recording device such as a thermal printer (for example, Video Printer VY-100 manufactured by Hitachi, Ltd.), 5 to 100 mJ / m
By applying heat energy of about m ² , the intended purpose can be sufficiently achieved.

Next, the present invention will be described more specifically with reference to Reference Examples, Examples and Comparative Examples. In the text, part or%
Unless otherwise specified, the values are based on weight.

The contents of the addition polymerizable silicone and the hydrogen-modified silicone used in the examples are described in Tables A1 and A2 below.

[0103]

[Table 1] * The methyl siloxane, phenyl siloxane, and addition polymerizable siloxane units in the side chains are each randomly arranged.

* Ratio to total siloxane units

[Table 2] * The methyl siloxane, phenyl siloxane and hydrogen siloxane units in the side chains are each arranged randomly.

Example A1 Synthetic paper (Yupo-FRG-150, thickness 150 μm, manufactured by Oji Oil Chemical Co., Ltd.) was used as a base sheet, and a coating solution having the following composition was dried on one surface thereof with a bar coater. 0.0 g /
was applied at a rate becomes m ^2, dried with a drier, about 13
Heat treatment was performed in an oven at 0 ° C. for 30 seconds to form a dye-receiving layer to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Release agent No.A 2 parts Release agent No.a 4 parts Epoxy-modified silicone (X22-3000T, Shin-Etsu Chemical Co., Ltd.) 6 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 400 parts Example A2 Using the following coating liquid as the coating liquid in Example A1,
Otherwise, a dye-receiving layer was formed in the same manner as in Example A1 to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Release agent No.B 2 parts Release agent No.a 4 parts Platinum curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 400 parts Example A3 The following coating liquid was used as the coating liquid in Example A1. And
Otherwise, a dye-receiving layer was formed in the same manner as in Example A1 to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition: Vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 75 parts Polyester resin (Vylon 200, manufactured by Toyobo Co., Ltd.) 25 parts Release agent No.C 2 parts Release agent No. b 5 parts Platinum curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 4 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 400 parts Example A4 The following coating liquid was used as the coating liquid in Example A1. And
Otherwise, a dye-receiving layer was formed in the same manner as in Example A1 to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition: Vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 75 parts Polyester resin (Vylon 200, manufactured by Toyobo Co., Ltd.) 25 parts Release agent No. D 3 parts Release agent No.c 9 parts Platinum-based curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 8 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 400 parts Example A5 Synthetic paper (Yupo-FRG-150, thickness as a base sheet) And a coating solution for the dye receiving layer having the following composition, which was applied to one surface with a bar coater at a rate of 2.5 g / m ² when dried, and dried to thereby receive the dye. A heat transfer image-receiving sheet of the present invention is formed by forming a layer, and then applying a coating liquid for a release layer having the following composition at a rate of 2.0 g / m ² when dried and heat drying to form a release layer. I got

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Polyester resin (Vylon 200, manufactured by Toyobo Co., Ltd.) 20 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) 240 parts Composition of coating liquid for release layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Release agent No.A 2 parts Release agent No.a 4 parts Platinum System curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 160 parts Example A6 The following coating liquids were used as the respective coating liquids in Example A5. A dye-receiving layer was formed in the same manner as in Example A5 to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating liquid for dye receiving layer: 25 parts of vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 25 parts of polyester resin (Vylon 200, manufactured by Toyobo Co., Ltd.) 25 parts methyl ethyl ketone / toluene (weight ratio: 1) / 1) 200 parts (coated amount 2.0 g / m ²⁾ release layer coating solution composition: vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 50 parts release agent No.C 2 parts Release agent No.b 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 200 parts (coating amount 2.5 g / m ² ) Example A7 A dye-receiving layer was formed in the same manner as in Example A5 except that the following coating liquids were used as the respective coating liquids in Example A5, and a thermal transfer image-receiving sheet of the present invention was obtained.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) 400 parts (Coating amount 4.5 g / m ² ) Composition of coating liquid for release layer: Release agent No.A 2 parts Release agent No.a 4 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd. 2 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 30 parts (Coating amount 5.0 g / m ² ) Example A8 The following coating liquid was used as each coating liquid in Example A5. A dye-receiving layer was formed in the same manner as in Example A5, to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 50 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 50 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) 400 parts (Coating amount 4.5 g / m ² ) Composition of coating liquid for release layer: Release agent No.B 3 parts Release agent No.a 6 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd. 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 50 parts (Coating amount 0.5 g / m ² ) Comparative Example A1 The following coating liquid was used as the coating liquid in Example A1.
Otherwise, a dye-receiving layer was formed in the same manner as in Example A1 to obtain a thermal transfer image-receiving sheet of Comparative Example.

Coating liquid composition: vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Vylon 200, manufactured by Toyobo Co., Ltd.) 20 parts Amino-modified silicone (KS-343, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Epoxy-modified silicone (KF-393, manufactured by Shin-Etsu Chemical) 5 parts Platinum curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical) 8 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 400 parts Comparative Example A2 Example A dye receiving layer was formed in the same manner as in Example A5 except that the following coating liquids were used as the respective coating liquids in A5, and a thermal transfer image-receiving sheet of Comparative Example was obtained.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) 250 parts (Coating amount 2.5 g / m ² ) Composition of coating liquid for release layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Amino-modified silicone (KS- 343, Shin-Etsu Chemical Co., Ltd. 5 parts Epoxy-modified silicone (KF-393, Shin-Etsu Chemical Co., Ltd.) 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 150 parts (coated amount 2.0 g / m ²⁾ on the other hand, a dye layer forming coating solution having the following composition was prepared, a polyethylene terephthalate film of 6μm thick subjected to heat treatment on the back, dry Coated amount to obtain a thermal transfer sheet for use in coating and drying and the present invention by gravure printing so as to become 1.0 g / m ^2.

Coating liquid composition: Kayaset Blue 714 (CI Solvent Blue 63, manufactured by Nippon Kayaku) 5.50 parts Polyvinyl butyral resin (Eslec BX-1, manufactured by Sekisui Chemical Co., Ltd.) 3.00 parts Methyl ethyl ketone 22 .54 parts Toluene 68.18 parts Thermal transfer test The above thermal transfer sheet and the thermal transfer image-receiving sheet of the present invention and the comparative example were overlapped with their respective dye layers and dye-receiving surfaces facing each other, and from the back of the thermal transfer sheet. Using a thermal head, a step pattern in which the head applied voltage is 12.0 V and the applied pulse width is sequentially reduced from 16.0 msec./line every 1 msec., 6 lines / mm in the sub-scanning direction (33.3 ms)
ec./line), thermal head recording was performed, and the peelability of the two after forming a cyan image was examined.
Was obtained.

[0117]

[Table 3] (1) Curability: The image receiving sheet was left in an oven at 120 ° C. for 3 minutes as a drying condition, and then cooled at room temperature, and the sliminess of the surface of the receptor layer was observed with a finger.

：: good ×: poor (2) Releasability: The adhesiveness between the image receiving sheet and the thermal transfer sheet after thermal head recording was performed was evaluated by peeling off the thermal transfer sheet. . The smaller the adhesiveness, the better the releasability. When heat-fused, the image-receiving sheet and the thermal transfer sheet do not peel off, and in some cases, the substrate may be damaged.

：: good Δ: partial poor peeling ×: poor (3) scratch resistance of coating film: rubbing the image receiving sheet surface with gauze,
The degree of damage before and after that was visually observed.

：: good Δ: slight scratches ×: poor (4) Strength of coating film of receiving layer: folded in two with the receiving layer surface of the image receiving sheet inside, the fold was observed with a microscope, and the state of cracking was evaluated. did.

：: good △: slightly cracked ×: poor Examples A9 to A21 The general formulas of the addition-polymerizable silicone and the hydrogen-modified silicone used are shown below, and the contents are shown in Table A.
4, described in Table A5.

[0122]

Embedded image

[Table 4]

[Table 5] Example A9 The following ink was applied on 150 μm of YUPO in the same manner as in Example A1, so as to be dried at 5.0 g / m ² .

Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENCALAC # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (DENCALAC # 400) 20 parts Release Agent No.E 5 parts Release agent No.d 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene solids Amount to be 20 wt% By using a styrene acrylic-modified vinyl chloride / vinyl acetate copolymer, the drying property can be improved.

Example A10 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (Denicalac # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (Denicalac # 400) 20 Part Release agent No.F 5 part Release agent No.g 5 part Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / Example A11 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENCALAC # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (Denka) Rack # 400) 20 parts Release agent No.G 5 parts Release agent No.f 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Suppressant (PLR-5, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene Amount to become 20 wt% solid content Example A12 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENKARAC # 1000A) 60 parts Release agent No.H 6 parts Release agent No.e 4 parts Platinum curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical) 6 parts Reaction inhibitor (PLR-5, manufactured by Shin-Etsu Chemical) 5 parts Methyl ethyl ketone Example A13 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENCALAC # 1000A) 60 parts Release agent No.I 5 parts Release agent No.e 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene solids Example A14 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENCALAC # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (DENCALAC # 400) 20 parts Release agent No.J 5 parts Release agent No.g 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene Amount to give a solid content of 20 wt% Example A15 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (Denaclac # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (Dencarak # 400) 20 parts Release agent No.K 5 parts Release agent No.h 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene Amount to give a solid content of 20 wt% Example A16 Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (DENCALAC #) 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (DENCALAC # 400) 20 parts Release agent No.L 2.5 parts Release agent No.i 7.5 parts Platinum curing catalyst ( PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd. 6 parts Reaction inhibitor (PLR-5, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene Amount to give a solid content of 20 wt% Example A17 Polyester resin (Vylon 600) 40 parts Vinyl chloride / Vinyl acetate copolymer (Dencalac # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (Denkara # 400) 20 parts Release agent No.J 5 parts Release agent No.h 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 6 parts Reaction inhibitor (PLR-5, Shin-Etsu Chemical Co., Ltd.) ) 5 parts Methyl ethyl ketone / amount containing toluene solids 20 wt% example A18 coating Formulation dye-receiving layer (5 g / m ²⁾ polyester resin (Byron 600) 40 parts vinyl chloride / vinyl acetate copolymer (Denka rack # 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (DENCALAC # 400) 20 parts MEK / T01 Amount to give a solid content of 20% by weight Composition of coating solution for release layer (0.1 g / m ²⁾ ) Polyester resin (Vylon 600) 30 parts Release agent No.E 10 parts Release agent No.i 10 parts Platinum-based curing catalyst (PL-50T) 10 parts Ethyl acetate Amount to become solid content 1 wt% Example A19 Dyeing Coating liquid composition for material receiving layer (5 g / m ² ) Polyester resin (Vylon 200) 20 parts MEK / T01 80 parts Coating liquid composition for release layer (0.1 g / m ² ) Polyester resin (Vylon 600) 30 Part Release agent No.E 10 parts Release agent No.d 10 parts Platinum-based curing catalyst (PL-50T) 10 parts Ethyl acetate Amount to become 1 wt% solid content Example A20 Dye receiving layer coating solution composition (5 g) / M ² ) Aqueous dispersion of polyester resin (Vylonal MD-1200 manufactured by Toyobo Co., Ltd.) 50 parts IPA / water (1/1) 50 parts Coating liquid composition for release layer (0.1 g / m ² ) 600) 30 parts Release agent No. E 10 parts Release agent No. d 10 parts Platinum-based curing catalyst (PL-50T) 10 parts Ethyl acetate Amount to become solid content 1 wt% Example A21 Coating solution for dye receiving layer Composition (5 g / m ² ) Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (# 1000A) 40 parts Vinyl chloride / vinyl acetate copolymer (# 400) 20 parts MEK / T01 Solid amount 20% by weight For release layer Coating liquid composition (0.1 g / m ² ) Release agent No.E 10 parts Release agent No.i 10 parts Platinum-based curing catalyst (PL-50T) 10 parts Ethyl acetate Amount to solid content 1 wt% Thermal transfer test Thermal transfer recording was performed under the following printing conditions, and the releasability of the two after forming the cyan image was examined. The results in Table 6 below were obtained. The film for evaluation is the same as described above.

Thermal head specifications: Model: L-335 (manufactured by TDK) Heating element density: 6 (doz / mm) Heating element average resistance value: 571 (Ω) Printing conditions: Printing speed: 5.5 (msec / line) Applied voltage: 15.7 (V) Applied pulse width: 16 step patterns that are sequentially reduced from 4.4 msec / line every 0.275 msec (Releasability) ：: When peeling, almost no resistance is felt, and There is no problem caused by thermal fusion between the image receiving sheet and the thermal transfer sheet,
Good recording was obtained.

：: There is some resistance when peeling off,
There was no problem due to heat fusion, and good recording was obtained.

Δ: Peeling was partially defective due to thermal fusion.

X: defective.

(Scratch resistance) The surface of the image receiving sheet was treated with a gauze
Reciprocating rubbing, then printing under the above printing conditions,
The releasability was checked.

：: The rubbed portion also showed good releasability, like the non-rubbed portion.

Δ: Some of the dye binder was thermally fused to the rubbed portion.

×: The rubbed portion was completely heat-sealed.

The evaluation of the other items was made according to Example A1,
This is the same as A2.

[0134]

[Table 6] According to the present invention as described above, by using a specific reactive silicone mixture as a release agent, the reaction speed of the release agent, the coating strength of the release layer, and the release property of the thermal transfer sheet are excellent. A thermal transfer image receiving sheet having a dye receiving layer can be provided.

Reference Example B1 Release Agent No.E 5 parts Release Agent No.d 5 parts Platinum curing catalyst (PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 0 or 6 parts Reaction inhibitor (silylene acetylene alcohol ( PLR-5, manufactured by Shin-Etsu Chemical Co., Ltd.) 0 or 2 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount that gives a solid content of 20% In the above composition, when only silicone is used, when silicone and a reaction inhibitor are used, and when silicone is used. When the relationship between the reaction temperature and the reaction rate (under the conditions described in Example B1) was examined for three kinds of combinations of the catalyst, the reaction inhibitor, and the catalyst, the results shown in FIG. 1 were obtained.

Example B1 Synthetic paper (Yupo-FRG-150, thickness 150 μm, manufactured by Oji Oil Chemical Co., Ltd.) was used as a base sheet, and a coating solution having the following composition was dried on one surface of the base sheet with a bar coater. 0.0 g /
m2, and after drying with a drier, about 13
Heat treatment was performed in an oven at 0 ° C. for 30 seconds to form a dye-receiving layer to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Byron 600, manufactured by Toyobo Co., Ltd.) 20 parts Release agent No.E 5 parts Release agent No.d 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 10 parts Reaction inhibitor (silylated acetylene alcohol (PLR-5, Shin-Etsu Chemical Co., Ltd.)) 0-10 parts Methyl ethyl ketone / toluene (weight ratio) 1/1) Amount at which solid content is 20% Immediately after production, the thermal transfer image-receiving sheet obtained above is allowed to stand for the time shown in Table B1 below, and then the test printer (VY
-P1, manufactured by Hitachi, Ltd.), allowed to stand at a temperature of 40 ° C. for 3 hours, and continuously printed 20 sheets of dark solid at the same temperature. The peeling of the thermal transfer sheet and the image receiving sheet was examined.
1 was obtained.

[0138]

[Table 7] Example B2 Synthetic paper (Yupo-FRG-150, thickness 150 μm, manufactured by Oji Oil Chemical Co., Ltd.) was used as a base sheet, and a coating solution for a dye receiving layer having the following composition was dried on one surface thereof with a bar coater. A dye receiving layer is formed by coating and drying at a rate of 2.5 g / m2, and then a coating liquid for a release layer having the following composition is coated and dried at a rate of 2.0 g / m2 upon drying. After drying, a release layer was formed to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) Amount that gives 20% solids Composition of coating solution for release layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Release agent No.E 5 parts Release agent No .d 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 10 parts Reaction inhibitor (silylated acetylene alcohol (PLR-5, Shin-Etsu Chemical Co., Ltd.)) 0-10 parts Methyl ethyl ketone / toluene (weight ratio 1) / 1) Amount at which solid content is 20% When the thermal transfer image-receiving sheet obtained above was evaluated in the same manner as in Example B1, the results in Table B2 below were obtained.

[0140]

[Table 8] Example B3 A dye receiving layer was formed in the same manner as in Example B2 except that the following coating liquids were used as the respective coating liquids in Example B2, and a thermal transfer image-receiving sheet of the present invention was obtained.

Composition of coating solution for dye receiving layer: 25 parts of vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 25 parts of polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 25 parts methyl ethyl ketone / toluene (weight ratio: 1) / 1) Amount to give a solid content of 20% (coating amount: 2.0 g / m2) Coating liquid composition for release layer: Vinyl chloride / vinyl acetate copolymer (# 1000GK, manufactured by Denki Kagaku Kogyo) 50 parts Amino-modified Silicone (KS-343, Shin-Etsu Chemical) 5 parts Epoxy-modified silicone (KF-393, Shin-Etsu Chemical) 5 parts Platinum curing catalyst (PL-50T, Shin-Etsu Chemical Co., Ltd.) 3 parts Reaction inhibitor (silyl of acetylene alcohol) product (PLR-5, manufactured by Shin-Etsu chemical)) 0 to 10 parts Methyl ethyl ketone / toluene (weight ratio 1/1) the amount of a solid content of 20% (coated amount 2.5 g / m ²⁾ above Obtained thermal transfer image receiving sheet in Example B1 with the results shown in Table B3 was evaluated in the same manner was obtained.

[0142]

[Table 9] According to the present invention as described above, when forming a dye receiving layer or a release layer, a coating liquid is prepared by using an ink containing a reactive silicone, a reaction catalyst, and a reaction inhibitor as essential components in a liquid medium. In the state (1), the reaction of the release agent is sufficiently suppressed, and after the formation of the dye-receiving layer or the release layer, the reaction speed is sharply increased, so that an image-receiving sheet can be manufactured with high productivity. A thermal transfer image-receiving sheet having a dye-receiving layer excellent in the coating strength of the mold layer and the releasability of the thermal transfer sheet can be provided.

Example C1 Synthetic paper (Yupo-FRG-150, thickness 150 μm, manufactured by Oji Oil Chemical Co., Ltd.) was used as a base sheet, and a coating solution for a dye receiving layer having the following composition was coated on one surface with a bar coater. And dried at a rate of 5.0 g / m ² when dried, dried with a drier, and heat-treated in an oven at about 130 ° C. for 30 seconds to form a dye-receiving layer. Next, platinum-based catalyst PL-50T
Coating of a 20% solution of a 1: 1 mixed solvent of methyl ethyl ketone / toluene (manufactured by Shin-Etsu Chemical Co., Ltd.) on the surface of the dye receiving layer at a rate of 50 wt% with respect to the catalyst-curable silicone added to the receiving layer. Then, heat treatment was performed in an oven at 130 ° C. for 30 seconds to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating liquid for dye receiving layer: 80 parts of vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 20 parts of polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Release agent No. E5 Part Release agent No. d 5 parts Epoxy-modified silicone (X22-3000T, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount to give a solid content of 20% Example C2 Same group as in Example C1 A coating solution for the dye receiving layer having the following composition was dried on one surface of the material sheet with a bar coater.
g / m ² , dried with a drier, and heat-treated in an oven at about 130 ° C. for 30 seconds to form a dye-receiving layer. Next, a release layer coating solution having the following composition was applied and dried on the surface at a rate of 2.5 g / m ² when dried in the same manner as described above. Thereafter, as in Example C1, a platinum-based catalyst PL-50T (Shin-Etsu) A 20% solution of a 1: 1 mixed solvent of methyl ethyl ketone / toluene manufactured by Kagaku Kogyo Co., Ltd. was applied at a dry amount of 5 to the catalyst-curable silicone added to the receptor layer.
0% by weight of the dye-receiving layer surface was applied,
Heat treatment was performed in an oven at 0 ° C. for 30 seconds to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) Amount that gives 20% solids Composition of coating solution for release layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 40 parts Release agent No.E 5 parts Release agent No .d 5 parts Epoxy-modified silicone (X-22-3000T, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount to give a solid content of 20% Example C3 Same base sheet as in Example C1. On one surface, a coating liquid for a dye receiving layer having the following composition was dried with a bar coater and then dried.
g / m ² , dried with a drier, and heat-treated in an oven at about 130 ° C. for 30 seconds to form a dye-receiving layer. Next, a coating liquid for a release layer having the following composition was applied and dried on the surface at a rate of 2.5 g / m ² when dried in the same manner as described above. A 20% solution of a 1: 1 mixed solvent of methyl ethyl ketone / toluene manufactured by Shin-Etsu Chemical Co., Ltd. was applied to the surface of the dye-receiving layer at a rate of 50 wt% with respect to the catalyst-curable silicone added to the receiving layer. , 1
Heat treatment was performed in an oven at 30 ° C. for 30 seconds to obtain a thermal transfer image-receiving sheet of the present invention.

Composition of coating solution for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 65 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 35 parts Methyl ethyl ketone / toluene (weight ratio: 1) / 1) Amount to give 20% solids Composition of coating solution for release layer: Release agent No.E 5 parts Release agent No.d 5 parts Epoxy-modified silicone (X-22-3000T, Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount to give a solid content of 20% Example C4 A coating solution for a dye receiving layer having the following composition was applied to one surface of the same base sheet as in Example C1 using a bar coater. 4.5 when dry
g / m ² , dried with a drier, and heat-treated in an oven at about 130 ° C. for 30 seconds to form a dye-receiving layer. Subsequently, a coating liquid for a release layer having the following composition was applied to the surface of the dye receiving layer at a rate of 0.5 g / m ^2, and heat-treated in an oven at 130 ° C. for 30 seconds to release the release layer (thickness 0). 0.5 g / m ² ) to obtain a thermal transfer image-receiving sheet of the present invention.

Coating liquid composition for dye receiving layer: Vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 80 parts Polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Platinum catalyst (PL-50T) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount to give a solid content of 20% Release layer coating solution composition: Release agent No.E 5 parts Release agent No.d 5 parts Epoxy-modified silicone (X-22-3000T, Shin-Etsu Chemical Co., Ltd.) 5 parts Example C5 Dye-receiving layer coating solution composition (5 g / m ² ) Polyester resin (Vylon 600) 40 parts Vinyl chloride / vinyl acetate copolymer (# 1000A) 40 parts Styrene acrylic-modified vinyl chloride / vinyl acetate copolymer (# 400) 20 parts Release agent No.E 2 parts Release agent No.d 2 parts MEK / T01 (1/1) Solid Minute 2 Amount to be 0 wt% Composition of coating liquid for release layer (0.1 g / m ² ) Polyester resin (Vylon 600) 10 parts Platinum curing catalyst (PL-50T) 10 parts Ethyl acetate Amount to be 1 wt% solid content Example C6 Composition of coating liquid for dye receiving layer (5 g / m ² ) Aqueous dispersion of polyester resin (Vylonal MD-1200) 50 parts Emulsion of release agent No.E 2 parts Emulsion of release agent No.d 2 Parts EPA / water (1/1) 50 parts Coating liquid composition for release layer (0.1 g / m ² ) Polyester resin (Vylon 600) 10 parts Platinum curing catalyst (PL-50T) 10 parts Ethyl acetate Solids Amount to be 1 wt% Comparative Example C1 A coating liquid for a dye receiving layer having the following composition was dried on one surface of the same base sheet as in Example C1 using a bar coater and dried at 5.0.
g / m ² , dried with a drier, and heat-treated in an oven at about 130 ° C. for 30 seconds to form a dye-receiving layer, thereby obtaining a thermal transfer image-receiving sheet of Comparative Example.

Composition of coating solution for dye receiving layer: 80 parts of vinyl chloride / vinyl acetate copolymer (# 1000A, manufactured by Denki Kagaku Kogyo) 20 parts of polyester resin (Vylon 600, manufactured by Toyobo Co., Ltd.) 20 parts Release agent No. E5 Part Release agent No.d 5 parts Epoxy-modified silicone (X22-3000T, manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) Amount to be 20% solid content Evaluation example In preparing the above thermal transfer image-receiving sheet After leaving each coating liquid used in each example for a certain period of time, when a thermal transfer image receiving sheet was produced using the coating liquid, the releasability of each thermal transfer image receiving sheet was evaluated using a test printer (VY-P1, manufactured by Hitachi, Ltd.). And left at a temperature of 40 ° C. for 3 hours, then continuously print 20 sheets of dark solid at the same temperature and examined the releasability between the thermal transfer sheet and the image receiving sheet. The results in Table C1 below were obtained. Was.

[0149]

[Table 10] As is clear from Table C1, according to the method of the present invention, the stability of the coating solution used is good, and it is not necessary to use the coating solution immediately after preparation, and a large amount of coating solution is prepared in advance. In addition, it is possible to continuously produce a thermal transfer image receiving sheet for a long time.

According to the present invention as described above, when forming a release layer comprising a catalyst-curable release agent and a curing catalyst on the surface of a dye-receiving layer, the release agent and the curing catalyst are used separately. In addition, a thermal transfer image-receiving sheet having a dye-receiving layer excellent in the coating strength of the release layer and the releasability from the thermal transfer sheet can be manufactured with high productivity.

[Brief description of the drawings]

FIG. 1 is a graph showing a relationship between a reaction rate of a reactive silicone and a reaction temperature.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H111 AA27 CA02 CA03 CA30 CA33 4J002 CP04X CP12W EX016 FD206 GP00 GQ00 GT00

Claims (13)

[Claims] 1. A composition for a release layer, comprising a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components in a liquid medium. 2. The composition for a release layer according to claim 1, wherein the reactive silicone is a mixture of two or more types having mutually reactive groups. 3. The composition for a release layer according to claim 1, wherein the reactive silicone is a mixture of an addition polymerizable silicone and a hydrogen-modified silicone. 4. The composition for a release layer according to claim 1, wherein the reaction catalyst is a platinum-based catalyst. 5. The composition for a release layer according to claim 1, wherein the reaction inhibitor is a silylated product of acetylene alcohol. 6. The method according to claim 1, further comprising a resin binder.
3. The composition for a release layer according to item 1. 7. A composition for a dye receiving layer, comprising a receiving medium, a reactive silicone, a reaction catalyst and a reaction inhibitor as essential components in a liquid medium. 8. A dye receiving layer is formed by coating the composition according to claim 7 on at least one surface of a substrate sheet.
A method for producing a thermal transfer image receiving sheet. 9. A thermal transfer method comprising forming a dye receiving layer on at least one surface of a substrate sheet, and then applying the composition according to claim 1 on the surface of the dye receiving layer to form a release layer. A method for manufacturing an image receiving sheet. 10. A method for producing a thermal transfer image-receiving sheet, comprising forming a dye receiving layer on at least one surface of a base sheet and a release layer on the surface thereof, wherein the release layer is a catalyst-curable release mold. And a curing catalyst. When the dye receiving layer is formed, one of the release agent and the curing catalyst is contained in the coating liquid for the dye receiving layer, and after the dye receiving layer is formed, the dye receiving layer is cured. A method for producing a thermal transfer image-receiving sheet, comprising applying one of a catalyst and a release agent to form the release layer. 11. A method for producing a thermal transfer image-receiving sheet, comprising forming a dye receiving layer on at least one surface of a substrate sheet and a release layer on the surface thereof, wherein the release layer is a catalyst-curable release agent. And a curing catalyst, and after forming the dye receiving layer, applying one of the coating liquid containing the release agent and the coating liquid containing the curing catalyst to the surface of the dye receiving layer, and then A method for producing a thermal transfer image-receiving sheet, wherein one of a coating liquid containing a curing catalyst and a coating liquid containing a release agent is applied to form a release layer. 12. The method for producing a thermal transfer image-receiving sheet according to claim 10, wherein the catalyst-curable release agents are release agent mixtures which react with each other. 13. The thermal transfer image-receiving sheet according to claim 10, wherein the catalyst-curable release agent is a silicone compound, and the curing catalyst is a platinum-based catalyst.