JPH11291641A - Recording image receiving sheet and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording image receiving sheet having not only excellent recordability but also excellent durability with a high quality by forming an acceptive layer for accepting a dye and an ink of a powder paint composition in the sheet for recording using a recording by a thermal transfer of the dye or an ink jet ink and a method for manufacturing it. SOLUTION: The recording image receiving sheet comprises an undercoating layer made of a resin on a base material, and a resin layer made of a power paint composition as an acceptive layer for accepting a thermal transfer dye or an ink jet ink. Such a recording image receiving sheet is manufactured by the steps of forming the undercoating layer made of the resin on the base material, dry coating it with the powder paint composition, heat melting it, fixing it, and forming the resin layer made of the composition as the acceptive layer for accepting the thermal transfer dye or the ink jet ink.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention has a receptor layer having excellent characteristics for receiving such a dye or ink and thus forming a high-quality recorded image on a substrate in thermal transfer of a dye or recording by ink-jet ink. In addition, the present invention relates to a recording image receiving sheet in which such a receiving layer does not easily peel off from a substrate and thus has excellent durability, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, various methods have been known for receiving information such as characters and images on a recording image receiving sheet with various dyes or inks and recording the information. Above all, a method using a sublimable dye has been widely used as a method using thermal transfer, and a recording method using an ink jet has been widely used.

For example, in a sublimable dye thermal transfer recording system, a thermal transfer sheet having a sublimable dye layer and an image receiving sheet for thermal transfer recording are overlapped, and the thermal transfer sheet is heated.
The dye is thermally transferred to the image receiving sheet,
For example, a so-called full-color transfer image can be obtained on an image receiving sheet by successively superimposing and thermally transferring superposed images obtained for each of three colors of yellow, magenta and cyan.

[0004] In this sublimation dye thermal transfer recording system, for example, a thermal transfer sheet (also referred to as an ink sheet or an ink film) in which a sublimable dye layer is formed on an appropriate support such as a polyester (polyethylene terephthalate) film. This is hereinafter referred to as an ink sheet), and separately, an image receiving sheet for thermal transfer recording having a receiving layer for receiving the dye on its surface is prepared, and the surface of the ink sheet on the dye layer side is received on the image receiving sheet. Overlaid on the surface of the layer side, by a heat-sensitive means such as a thermal head, according to the image information, heating the ink sheet, corresponding to the image information, the dye is transferred to the receiving layer of the image receiving sheet, A recording method in which an image is thermally transferred from an ink sheet to an image receiving sheet for thermal transfer recording.

In such a sublimation dye thermal transfer recording system, conventionally, an image receiving sheet for thermal transfer recording is a receiving layer comprising a resin layer on which a dye of an ink sheet can be diffused or transferred by heat onto an appropriate substrate. And, a plurality of resin layers composed of such a receiving layer and a release layer which is a resin layer for preventing fusion during heating of the ink sheet with the ink sheet are sequentially laminated by a wet coating method. ing.

That is, a conventional image receiving sheet for sublimable dye thermal transfer recording is formed by applying a solution containing the resin constituting the above-described receiving layer on a substrate and drying the solution to form a receiving layer.
Then, a resin layer for forming a release layer is applied thereon, and dried to form a release layer, and thus, a plurality of resin layers are separated and laminated according to their functions, thereby being manufactured. . Therefore, the production of such a conventional image-receiving sheet for sublimable dye thermal transfer recording involves a multistage wet process, and the production process is complicated, and the production cost is high.

[0007] On the other hand, in the ink jet recording, usually, water-based ink is discharged directly from a nozzle toward an image receiving sheet and adhered to the image receiving sheet for recording. Conventionally, such an image receiving sheet for ink jet recording is manufactured by wet-coating a solution containing a resin and other additives on a base material and drying the solution to form a resin layer. The resin layer in the ink-jet recording image-receiving sheet is composed of a resin layer containing a pigment in order to secure the absorbency and the color developing property of the aqueous inkjet ink, and to obtain the ink absorbency, the resin is water-soluble. Some are used or those that are water-swellable.

As described above, in both the conventional image-receiving sheet for recording by thermal transfer of a sublimable dye and the image-receiving sheet for recording by ink-jet ink, an appropriate resin is used, if necessary, from the viewpoint of manufacturing. , Together with other additives, is wet-coated on a substrate, and the solvent is removed to form a receiving layer. Therefore, when the solvent is removed, consideration for the environment is required. The resulting image receiving sheet is expensive because of the large number of manufacturing steps and the use of organic solvents.

Japanese Patent Application Laid-Open No. 8-112974 discloses that a powder coating composition containing a resin component is dry-coated on a substrate and heated to melt and fix the powder coating composition. Thus, there has been proposed a method for producing an image receiving sheet for sublimation-type thermal thermal transfer recording, in which a receiving layer formed of a resin layer is formed on a base material. According to this method, for example, a plain paper is used as a base material, and a receptor layer can be easily formed thereon, so that an image receiving sheet for thermal transfer recording can be manufactured at low cost.

[0010]

As described above, the powder coating composition is dry-coated on a substrate and heated to melt and fix the powder coating composition, thereby obtaining a dye or ink. According to the method of forming a resin layer as a receiving layer on a base material, various recording image receiving sheets can be obtained easily and inexpensively, but when the surface of the image receiving sheet is rubbed, Further, when the substrate is bent, the resin layer serving as the receiving layer may be partially peeled off from the substrate. Further, as the base material, a resin film or sheet, for example, a film or sheet composed of a hard polyvinyl chloride resin, a styrene-acryl copolymer resin, a saturated polyester resin (polyethylene terephthalate), etc. When the resin layer made of the material is sprayed and adhered by electrostatic spraying or the like, the surface of the substrate is smooth, so that the powder coating composition slides on the surface of the substrate, and the powder coating composition is uniformly powdered on the surface of the substrate. It may be difficult to form a thin layer of the body coating composition. Similar problems also occur when using high-quality paper or resin-coated paper having a smooth surface as the base material.

As described above, if a part of the receiving layer is peeled off from the substrate, it is impossible to form a recorded image accurately and clearly on the substrate. In addition, a thin layer of the powder coating composition cannot be formed uniformly on the surface of the base material, and in particular, if there is a defect such as a pinhole, the recorded image is also printed on the base material. It cannot be formed accurately and clearly.

The present inventors have further studied to solve the above-mentioned problems with respect to a recording image receiving sheet using a dye or ink, and as a result, have found that an undercoat comprising an appropriate resin layer on a substrate is obtained. Form a layer, on which, powder coating composition, if necessary, blend a pigment and other appropriate additives,
Thus, the obtained powder coating composition is dry-coated on a substrate, for example, by a method such as an electrostatic spray method, and then heated and melted and fixed, whereby the powder coating composition is thinned. Because it adheres well without slipping on the layer,
A thin and uniform resin layer can be formed on the undercoat layer as a receiving layer for receiving dyes and inks, and thus,
The receptivity of these dyes and inks, and therefore recording properties, is excellent, and even when the receptive layer is rubbed or the substrate is bent, the receptive layer does not easily peel off from the substrate, thus providing durability. It has been found that a high quality image receiving sheet for recording can be easily and inexpensively manufactured, and the present invention has been accomplished.

Accordingly, the present invention is directed to an image receiving sheet for recording by thermal transfer of a sublimable dye or recording using an ink jet ink, wherein the receiving layer for receiving the dye or ink comprises a powder coating composition. Still another object of the present invention is to provide a high-quality image-receiving sheet for recording which is excellent not only in recordability but also in durability, and a method for producing the same.

[0014]

The image-receiving sheet for recording according to the present invention has a subbing layer made of a resin on a base material, on which a resin layer made of a powder coating composition is coated with a thermal transfer dye or an ink jet ink. Characterized in that it has as a receiving layer for receiving.

Further, in the method for producing a recording image receiving sheet according to the present invention, an undercoat layer made of a resin is formed on a base material, and a powder coating composition is dry-coated thereon, followed by heating and melting. Fixing, and forming a resin layer made of the powder coating composition as a receiving layer for receiving a sublimable dye or an inkjet ink.

In particular, the present invention is useful when using a substrate having a smooth surface, such as a resin film or sheet.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the recording image receiving sheet includes a sublimable dye thermal transfer recording image receiving sheet and an ink jet ink recording image receiving sheet. When a thermal transfer sheet (ink sheet) having a layer of a sublimable dye or ink that can be thermally transferred to a sheet is superimposed and heated, the sublimable dye or ink is received and printing or recording on an image receiving sheet is enabled. It refers to a sheet having a receiving layer made of a resin on an appropriate substrate. Further, the image receiving sheet for ink jet recording has a receiving layer made of a resin that receives ink ejected from the nozzle toward the image receiving sheet and enables printing or recording on the image receiving sheet, on an appropriate base material. Refers to a sheet.

In the present invention, when the undercoat layer is formed by dry-coating the powder coating composition on the base material by a method such as electrostatic spraying, the undercoat layer is formed. The powder coating composition is a first powder coating composition, and contains a first resin, a first colorant, and, if necessary, first inorganic fine particles, and a powder for forming a receiving layer. The body paint composition is a second powder paint composition, and includes a second resin, a second colorant, and, if necessary, second inorganic fine particles. Here, the first and second coloring agents, the inorganic fine particles, and the resin may be the same or different from each other, as described later.

In the present invention, as the substrate, usually, a certain kind of paper, synthetic paper, synthetic resin film or sheet or the like is preferably used. As the paper, in particular, high-quality paper having a smooth surface, coated paper, resin-treated paper, or the like is preferably used. Examples of the synthetic resin film or sheet include films (sheets) made of polyester (polyethylene terephthalate), polyvinyl chloride, polyethylene, polypropylene, styrene-acryl copolymer resin, polycarbonate, polyamide, and the like. As well-known, examples of the synthetic paper include those obtained by extruding a mixture of a polyolefin resin or another synthetic resin as a resin component, a required inorganic filler, and the like. Further, if necessary, metals and ceramics are also used as the base material.

According to the present invention, before forming an undercoat layer on such a base material, an appropriate pretreatment can be performed, if necessary, to activate the surface of the base material. . Examples of such a surface activation pretreatment include physicochemical treatments such as chemical treatment using chemicals such as acids, alkalis, oxidizing agents and reducing agents, corona discharge treatments, plasma treatments, and ultraviolet treatments. . Further, a surface treatment such as plating may be performed.

According to the present invention, an undercoat layer made of a resin is formed on such a base material. The method of forming an undercoat layer made of a resin on a substrate is not particularly limited. For example, a method in which a resin is dissolved in an appropriate solvent to form a solution, which is wet-coated, and then dried. A method in which the resin is melted, applied and cooled, a method in which a resin film is bonded, and the like.

When the undercoat layer is formed by such a method, the resin used is not particularly limited, but is usually a saturated polyester resin, a polyamide resin,
(Meth) acrylic resin, polyurethane resin, polyvinyl alcohol resin, polyvinyl acetal resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride / vinyl acetate copolymer resin, vinylidene chloride resin, polystyrene resin, styrene / acryl copolymer resin, styrene・ Styrene resin such as butadiene copolymer resin, polyethylene resin, ethylene / vinyl acetate copolymer resin, polyethylene resin,
Cellulose-based resins, epoxy resins, urethane resins and the like can be mentioned. These resins are used alone or as a mixture of two or more.

Among these, resins having a functional group such as a carboxyl group, an amino group, a hydroxyl group, an isocyanate group, and an epoxy group are preferably used.
Accordingly, specific examples include, for example, saturated polyester resins, epoxy resins, urethane resins, and the like.

In particular, according to the present invention, when a resin is dissolved in an appropriate solvent to form a solution, which is applied to a substrate and dried to form an undercoat layer, the resin or rubber is used as a component. A solution adhesive can be preferably used as the resin solution. Examples of such an adhesive include an adhesive containing an epoxy resin, an acrylic resin, a nitrile rubber, a chloroprene rubber, a urethane resin, and an epoxy polyamide resin as a resin component.

However, for example, when a resin film or sheet having a very smooth surface is used as a substrate, such as a card having a surface layer made of a polyester film or a styrene-acrylic copolymer resin, for example. When forming the receiving layer made of the second powder coating composition on the substrate, in order to form an undercoat layer on the substrate, in addition to the method described above, for example, as described above A method of dry-coating a first powder coating composition based on a first resin such as a resin having a high density of functional groups, for example, a polyester resin having a high acid value, can be used. That is, the first powder coating composition having such a first resin as a base material can be well adhered to even a smooth surface and slippery when dry-coated on a base material. Since there is no,
This is dry-coated on the surface of the base material and adhered to form an undercoat layer. In particular, when using this method, 15 to 25 mg
It is preferable to use a resin having an acid value in the range of KOH / g, for example, a polyester resin.

According to the present invention, the thickness of the undercoat layer on the substrate is generally in the range of about 1 to 50 μm, preferably in the range of about 2 to 30 μm.

The image-receiving sheet for recording according to the present invention has a resin layer composed of a powder coating composition as a receiving layer for receiving a dye or ink on such an undercoat layer. According to the present invention, such a resin layer is formed by dry-coating a powder coating composition on the undercoat layer, melting and heating the powder coating composition, and fixing the resin composition as a dye or ink receiving layer. A layer is formed over the undercoat layer. As described above, when the first powder coating composition is dry-coated on a substrate and adhered to form an undercoat layer, the second powder coating composition for the receiving layer is formed thereon. The article is dry coated, adhered, heat melted, and fixed with the undercoat layer to form the receiving layer.

In the present invention, the second powder coating composition used for forming the receiving layer contains a second resin. This second resin forms a resin layer as a dye or ink receiving layer on the undercoat layer, together with a role as a binder resin for collecting various components of the powder coating composition into a powder, For example, when recording a character or image by thermal transfer of a sublimable dye or a hot-melt dye, the dye is diffused into the resin layer, absorbed by the resin layer, and allowed to be recorded on the image receiving sheet. When recording text and images,
It supports a colorant such as a dye or a pigment that forms them, and enables recording on an image receiving sheet.

As such a second resin, for example,
Saturated polyester resin, polyamide resin, (meth) acrylic resin, polyurethane resin, polyvinyl alcohol resin, polyvinyl acetal resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride / vinyl acetate copolymer resin, vinylidene chloride resin, polystyrene resin, styrene -Acrylic copolymer resin, styrene resin such as styrene / butadiene copolymer resin, polyethylene resin, ethylene / vinyl acetate copolymer resin, polyethylene resin, cellulose resin, epoxy resin and the like can be mentioned. These resins are used alone or as a mixture of two or more.

When the recording image receiving sheet according to the present invention is used as an image receiving sheet for sublimable dye thermal transfer recording, among these, a saturated polyester resin, a styrene / acrylic copolymer resin or a mixture thereof is preferably used. A saturated polyester resin or a styrene / acrylic copolymer resin is preferably used. These resins have excellent thermal transferability of sublimable dyes,
The acid value is preferably less than 15 mgKOH / g, particularly preferably in the range of 1 mgKOH / g or more and less than 15 mgKOH / g.

On the other hand, when the recording image receiving sheet according to the present invention is used as an ink jet recording image receiving sheet,
Among the above-mentioned various second resins, a saturated polyester resin, a styrene / acrylic copolymer resin or a mixture thereof is particularly preferably used.

In the present invention, commercial products can be suitably used as the saturated polyester resin. Such commercial products include, for example, Byron 103, 200, 2
90, 600 (manufactured by Toyobo Co., Ltd.), KA-1038C
(Arakawa Chemical Co., Ltd.), TP-220, 235 (Nippon Synthetic Chemical Industry Co., Ltd.), Diacron ER-101, E
R-501, FC-172, FC-344, FC-71
4 (manufactured by Mitsubishi Rayon Co., Ltd.), Tuffton NE-382,
1110 and 2155 (manufactured by Kao Corporation) and the like.

The styrene-acrylic copolymer resin is a copolymer of styrene and (meth) acrylic acid ester. Specifically, examples of (meth) acrylic acid ester include ethyl acrylate and butyl acrylate. , Methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, 2-hydroxyethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate and the like.

As such a styrene-acrylic copolymer resin, various commercially available products can be suitably used. Commercially available products include, for example, Hymer UNI-3000, TB
-1800, TBH-1500 (Sanyo Chemical Industry Co., Ltd.)
CPR-100, 600B, 200, 300, X
PA4799, 4800 (manufactured by Mitsui Chemicals, Inc.) and the like.

In the present invention, the second powder coating composition for forming the receiving layer usually contains a second coloring agent.
The second colorant is preferably white, and for example, titanium dioxide is preferably used, but is not limited thereto. The second colorant gives the substrate the required ground color. The white colorant gives the substrate a white ground color.
The second colorant is contained in the second powder coating composition in a range of usually 0.5 to 60% by weight, preferably 5 to 50% by weight.

According to the present invention, particularly when an image receiving sheet for sublimable dye thermal transfer recording is manufactured, when the dye is thermally transferred from the ink sheet to the image receiving sheet, the ink sheet should not be fused to the receiving layer. The second powder coating composition preferably contains a release component together with the first resin component. The release component is, for example, a cured product derived from a reactive silicone oil having a reactive functional group, preferably at least two types of reactive silicone oils having a functional group that can react with each other. May be cured products which react with each other.

Such reactive silicone oils include, for example, a functional group such as an amino group, an epoxy group, a carboxyl group, a carbinol group, a methacryl group, a mercapto group, or a phenol group, which is provided on the side of a polysiloxane, usually dimethylpolysiloxane. Introduced at the chain or at the molecular end or both, various ones are already commercially available, and in the present invention, appropriately selected from such commercially available products in consideration of the reactivity of the functional group. Can be used.

For example, amino-modified silicone oils include, for example, KF-393, 861, 864, X-2
2-161A and the like (manufactured by Shin-Etsu Chemical Co., Ltd.), epoxy-modified silicone oils such as KF-101,
102, 103, 105, X-22-163C, X-2
Examples of 2-169C and the like (manufactured by Shin-Etsu Chemical Co., Ltd.) and carboxyl-modified silicone oil include X-22-
162A, X-22-3710, X-22-162C,
X-22-3701E (Shin-Etsu Chemical Co., Ltd.) and carbinol-modified silicone oils include, for example, X
-22-162AS, KF-6001 (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like. Such silicone oils are described in detail in, for example, "Silicone Handbook" (published by Nikkan Kogyo Shimbun on August 31, 1990).

According to the present invention, in the second powder coating composition, at least two kinds of reactive silicone oils having a functional group capable of reacting with each other are separated from each other by a cured product formed by reacting with each other by the functional group. When contained as a mold component, as a combination of a reactive silicone oil, among these, for example, a modified silicone oil having an amino group or a hydroxyl group and a modified silicone oil having an epoxy group, an isocyanate group or a carboxyl group; Are preferably used, and in particular, a combination of amino-modified and epoxy-modified silicone oil is preferably used. These two types of reactive silicone oils are used such that the functional groups capable of reacting with each other are substantially equal.

However, according to the present invention, the releasable component comprises:
It may be a cured product obtained by reacting a silicone oil having a single functional group with a functional group of a resin component, for example, a carboxyl group or a hydroxyl group of a resin component. That is, a silicone oil having a single functional group and a functional group of a resin component, for example, a cured product obtained by reaction with a carboxyl group or a hydroxyl group may be contained in the powder coating composition as a release component. Is useful. When such a releasable component is contained in the powder coating composition, for example, a modified silicone oil having an epoxy group is preferably used as the silicone oil having a single functional group.

According to the present invention, the second powder coating composition may contain a cured product derived from such a reactive silicone oil in a range of 0.5 to 12% by weight in terms of silicone oil. Preferably, it is particularly preferable that the content be in the range of 0.5 to 10% by weight. When the amount of the cured product of the reactive silicone oil in the second powder coating composition is less than 0.5% by weight, for example, the thermal transfer image-receiving sheet obtained is not sufficient in releasability, and recording by thermal transfer is performed. At this time, the ink sheet and the image receiving sheet may be fused to each other, and a high quality image may not be obtained. On the other hand, when the amount of the cured product of the silicone oil in the second powder coating composition is more than 12% by weight, the amount of the cured product in the obtained image receiving sheet is too large, and the transfer image obtained is inferior in density. Sometimes.

In the present invention, a powdery silicone-modified acrylic resin obtained by modifying an acrylic resin with a reactive silicone oil can be used in place of the cured product of the reactive silicone oil. As such a silicone-modified acrylic resin, for example, X-22-800
4, commercially available products such as X-22-2110 (manufactured by Shin-Etsu Chemical Co., Ltd.) can be preferably used.

In particular, according to the present invention, the image-receiving sheet for sublimable dye thermal transfer recording has the resin component in the second powder coating composition so as to have excellent release properties from the ink sheet. By using a saturated polyester resin as at least one, a cured product of the polyester resin and the reaction curable silicone oil can be contained in the receiving layer as a release component.

Further, the second powder coating composition is dry-coated on the undercoat layer, melted by heating, and is fixed, if necessary, so as not to cause offset when fixed. An anti-offset agent may be included. As the anti-offset agent, usually, various waxes having a melting point in the range of 50 to 150 ° C. are preferably used. Specific examples include paraffin wax, polyolefin wax such as polyethylene and polypropylene, fatty acid metal salts, fatty acid esters, higher fatty acids, higher alcohols, and the like. Such an anti-offset agent is usually added to the second powder coating composition in an amount of 0.1 to 20% by weight, preferably
It is used in the range of 0.5 to 10% by weight.

[0045] The second powder coating composition used in the present invention comprises the above-mentioned reactive silicone oil for forming the release component, if necessary, by combining the second resin component and the second colorant. And usually mixed with an anti-offset agent and other additives.
A few minutes at a temperature of about 0 to 180 ° C, usually about 3 to 5 minutes,
It is obtained by melt-kneading, cooling, pulverizing and classifying. According to the invention, the second powder coating composition has an average particle size in the range of 0.1 to 30 μm, preferably in the range of 1 to 25 μm, most preferably 5 to 25 μm.
２０20 μm.

When the reactive silicone oil is blended with the second powder coating composition, the reactive silicone oil reacts with each other during the melting and kneading of the resin component and the colorant as described above, or Reacts with the resin component to form a cured product. However, the heating temperature and time are not particularly limited. In addition to the resin component, the colorant, and the reactive silicone oil, each component such as an anti-offset agent is uniformly mixed, and the reactive silicone is used. Any condition may be used as long as the oil reacts with each other or with the resin component to form a cured product. In this way, the mixture is melt-kneaded, cooled, pulverized, and classified so as to have an appropriate average particle size.
Can be obtained.

As described above, the thickness of the resin layer composed of the second powder coating composition formed as the receiving layer on the undercoat layer according to the present invention is usually in the range of 1 to 100 μm. Preferably, it is in the range of 2 to 80 μm, particularly preferably in the range of 5 to 50 μm.

According to a preferred embodiment of the image receiving sheet for recording according to the present invention, the second powder coating composition is mixed with second inorganic fine particles having an average particle diameter in the range of 1 nm to 1 μm. The mixture (hereinafter, referred to as a first powder mixture) is dry-coated on the undercoat layer, melted by heating, and fixed to form the second powder coating composition on the undercoat layer. The particles are covered with a substantially continuous film made of the second inorganic fine particles, and are isolated from each other, thereby forming a separated resin layer. That is, according to such a resin layer, not only the second inorganic fine particles are exposed in the form of a film on the surface thereof, but also usually about 1 nm between the particles of the second powder coating composition. From about 200 nm, and some are voids.

In order to form a resin layer having such a structure, the amount of the second inorganic fine particles is usually in the range of 1 to 10% by weight based on the second powder coating composition. And preferably 2 to 10% by weight, particularly preferably 5% by weight.
In the range of 10 to 10% by weight. However, optimally, it can be experimentally determined according to the respective average particle diameters of the second powder coating composition and the second inorganic fine particles used.

As described above, the second powder coating composition has the second powder coating composition.
When forming the resin layer on the undercoat layer using the second powder mixture containing the inorganic fine particles of the above, by using the hydrophobic inorganic fine particles, excellent releasability from the ink sheet can be obtained. The image receiving sheet for thermal transfer recording of a sublimable dye having the same can be obtained. That is, according to such an image receiving sheet, the particles of the second powder coating composition forming the receiving layer are coated and separated by the film composed of the second inorganic fine particles, respectively, so that the resin layer By itself,
Already has excellent releasability from the ink sheet.

On the other hand, when a resin layer is formed on an undercoat layer by using a second powder mixture obtained by mixing a second powder coating composition with second inorganic fine particles, a hydrophilic property is obtained. By using the inorganic fine particles, it is possible to obtain an ink-jet ink-recording image-receiving sheet provided with a receptor layer having excellent absorptivity and color-forming property for the ink-jet ink. That is, if the inkjet ink adheres to such an image receiving sheet, the aqueous ink is quickly absorbed along the film made of the second inorganic fine particles between the second powder coating composition particles, and And the resin layer containing the coloring agent captures the coloring agent composed of the dye or pigment in the ink, so that high-quality ink jet recording excellent in absorption and coloring can be obtained. However, in the case of an image-receiving sheet for ink-jet recording, hydrophilic inorganic oxide fine particles and hydrophobic inorganic oxide fine particles are combined as necessary in order to adjust the absorbability of the aqueous ink-jet ink in the receiving layer. They can be used together.

As the above-mentioned hydrophobic inorganic fine particles, for example, hydrophobic inorganic oxide fine particles are preferable. Commercial products of such hydrophobic inorganic oxide fine particles include, for example, Aerosil R972, R972V, R972CF, and R97, which are anhydrous silica manufactured by Nippon Aerosil Co., Ltd.
4, R202, R805, R812S, Titanium dioxide T
805, RX200, RY200, etc., and anhydrous silica H15, H20 manufactured by Wacker Chemicals East Asia,
H30, H2000, H2000 / 4, H3004, H
2015EP, H2050EP and the like.

On the other hand, as the hydrophilic inorganic fine particles, hydrophilic inorganic oxide fine particles are preferable. Commercial products of such hydrophilic inorganic oxide fine particles include, for example, anhydrous silica manufactured by Nippon Aerosil Co., Ltd. Aerosil (registered trademark) 50, 90G, 130, 200, 200V, 2
00CF, 200FAD, 300, 300CF, 38
0, OX50, TT600, MOX80, MOX17
0, COK84, etc., aluminum oxide C, titanium dioxide P25, etc., Carplex (registered trademark) silica BS-304F, manufactured by Shionogi & Co., Ltd., and anhydrous silica S13, V1 manufactured by Wacker Chemicals East Asia
5, N20, T30, T40 and the like.

Further, according to the present invention, when the receiving layer is formed by using the second powder mixture obtained by mixing the inorganic fine particles with the powder coating composition, Using the first powder mixture in which the amount of such inorganic fine particles is reduced, or without blending the inorganic fine particles,
The powder coating composition is dry-coated on the substrate as it is by a method such as an electrostatic spray method and adhered to form an undercoat layer, on which the second powder mixture for the receiving layer is applied. The receiving layer can be formed by dry coating by means of an electrostatic spray method or the like, adhering, heating, melting, cooling and fixing. When the amount of the inorganic fine particles in the powder coating composition is reduced, the amount of the inorganic fine particles is usually preferably 1% by weight or less, more preferably 0.5% by weight, based on the powder coating composition.
The following is preferred.

That is, a preferred embodiment of the recording image-receiving sheet according to the present invention is a first image-receiving sheet containing a first resin and a first colorant.
A second resin and a second colorant on a subbing layer made of a first powder mixture obtained by adding first inorganic fine particles having an average particle diameter of 1 nm to 1 μm to the powder coating composition of Having a resin layer composed of a second powder mixture obtained by adding second inorganic fine particles having an average particle diameter of 1 nm to 1 μm to the powder coating composition of No. 2 as a receiving layer for receiving a sublimable dye or an inkjet ink. In the image receiving sheet for use, the amount of the first inorganic fine particles in the first powder mixture is less than 1% by weight, and the amount of the second inorganic fine particles in the second powder mixture is in the range of 1 to 10% by weight. There is something.

According to the present invention, such a recording image receiving sheet is prepared by adding first inorganic fine particles having an average particle diameter of 1 nm to 1 μm to a first powder coating composition containing a first resin and a first coloring agent. The added first powder mixture is dry-coated on a substrate and adhered to form an undercoat layer, and then a second resin and a second colorant are applied on the undercoat layer. A second powder mixture obtained by adding a second inorganic fine particle having an average particle diameter of 1 nm to 1 μm to the second powder coating composition containing the second powder coating composition is dry-coated, heated and melted and fixed, and the resin thus formed is formed. In a method for producing a recording image receiving sheet having a layer as a receiving layer for receiving a sublimable dye or an inkjet ink, the amount of the first inorganic fine particles in the first powder mixture is less than 1% by weight, 1 to 10% by weight of the second inorganic fine particles in the powder mixture of It can be obtained by using one having the following range.

In this embodiment, the undercoat layer may be heated, melted, cooled and fixed before forming the receiving layer thereon, but usually, as described above,
When the powder mixture for the receiving layer is dry-coated thereon, adhered thereto and melted by heating, it is simultaneously melted by heating and fixed.

In this embodiment, the first resin, the first inorganic fine particles, and the first colorant may be the same as the second resin, the second inorganic fine particles, and the second colorant described above. Well, they may be different. Also, the average particle diameter of the first powder coating composition is usually in the same range as that of the second powder coating composition, but within the range, they may be the same or different. Good.

According to such an embodiment, since the amount of the first inorganic fine particles in the first powder mixture is less than 1% by weight, even if the surface of the substrate is smooth, an electrostatic spraying method or the like can be used. In the case of dry coating, it does not slip on the surface of the base material and adheres well. Therefore, if this is used as an undercoat layer, even if the second powder mixture contains a large amount of inorganic fine particles, the electrostatic spray By dry coating such as a method, it can be uniformly adhered thereon without slipping, and thus a uniform resin layer without defects can be formed as a receiving layer.

According to the present invention, when the receiving layer is formed by using a powder mixture obtained by mixing inorganic fine particles with the powder coating composition, the first resin having a functional group is used as a base material. The first powder coating composition is dry-coated on a substrate by an electrostatic spray method and adhered to form an undercoat layer, on which a second powder mixture for a receiving layer is electrostatically applied. It can be dry coated by a spray method, adhered, heated, melted, cooled, and fixed to form a receiving layer. Also in this embodiment, the undercoat layer is formed before forming the receiving layer thereon.
Heating, melting, cooling, and fixing may be performed, but usually, as described above, when the powder mixture for the receiving layer is dry-coated, adhered, and heated and melted. ,
At the same time, they are melted by heating and fixed.

In this embodiment, the first powder coating composition containing the resin having a functional group is not particularly limited, but examples thereof include a carboxyl group, a hydroxyl group, an amino group, an isocyanate group, and an epoxy group. And a resin containing a oxazoline group as a base material.

In particular, another preferred embodiment of the recording image-receiving sheet according to the present invention is a first powdery coating composition containing a first resin and a colorant, wherein the first inorganic fine particles having an average particle diameter of 1 nm to 1 μm. Is added to the second powder coating composition containing the second resin and the second colorant on the undercoat layer composed of the first powder mixture to which 1% to 10% by weight is added. 1 nm to 1
A recording image-receiving sheet having a resin layer composed of a second powder mixture to which 2 μm of second inorganic fine particles are added in a range of 1 to 10% by weight as a receiving layer for receiving a sublimable dye or an inkjet ink, The resin in the first powder coating composition has an acid value in the range of 15 to 25 mgKOH / g, and the resin in the second powder coating composition has 15 mgKOH / g.
It has an acid value of less than OH / g.

According to the present invention, such a recording image receiving sheet is prepared by adding first inorganic fine particles having an average particle diameter of 1 nm to 1 μm to a first powder coating composition containing a first resin and a first coloring agent. The first powder mixture added in the range of 1 to 10% by weight is dry-coated on the substrate and adhered to form an undercoat layer,
Next, on this undercoat layer, a second powder coating composition containing a second resin and a second colorant is coated with an average particle diameter of 1 nm to 1 nm.
A second powder mixture to which 1 μm of second inorganic fine particles is added in a range of 1 to 10% by weight is dry-coated, heated and melted and fixed, thus forming a resin layer formed of a sublimable dye or A method for producing a recording image-receiving sheet having a receiving layer for receiving an ink-jet ink, wherein the resin in the first powder coating composition has an acid value in the range of 15 to 25 mgKOH / g, and the second powder It can be obtained by using a resin in the coating composition having an acid value in a range of less than 15 mgKOH / g.

In this embodiment, the first powder coating composition, the first inorganic fine particles and the first colorant are the same as the second powder coating composition, the second inorganic fine particles and the second May be the same as or different from each other. Also, the average particle diameter is usually in the same range, but within the range, they may be the same or different.

In this embodiment, the first inorganic fine particles and the first colorant may be the same as or different from the second inorganic fine particles and the second colorant described above. In addition, the average particle size of the first powder coating composition is usually the second particle size.
Are in the same range as that of the powder coating composition, but may be the same as or different from each other within the range. Also, the first
The first resin in the powder coating composition is made of the same resin, for example, a polyester resin, and only the acid value may be different as described above. Needless to say, the base materials are different from each other. It may be made of a resin, and the acid value may be different as described above.

According to such an embodiment, since the acid value of the resin in the first powder coating composition is high, even when the surface of the base material is smooth, the dry coating such as the electrostatic spraying method can be used.
Since it adheres well without slipping on the surface of the base material, if this is used as an undercoat layer, even a second powder coating composition having a low acid value can be obtained by dry coating such as electrostatic spraying. It can be uniformly adhered thereon without slipping, and thus a uniform resin layer without defects can be formed as the receiving layer.

In particular, according to the present invention, the acid value is 15 to 25.
It is preferable to form the undercoat layer using the first powder coating composition based on a polyester resin in the range of mgKOH / g. This method has a carboxyl group as a functional group for the receiving layer and has an acid value of 15 mg KO.
It is useful when a receptor coating layer is formed by dry-coating a second powder coating composition based on a resin having a H / g of less than, for example, a polyester resin as a base material by means such as an electrostatic spraying method. is there.

In the present invention, to dry-coat the powder coating composition on the undercoat layer on the substrate, for example, electrostatic coating such as electrostatic spraying or electrostatic immersion, spraying, Powder coating such as spray coating, dispersion method, powder melt lamination method, dusting method, cascade method, magnetic brush developing method, powder cloud method, open chamber method, liquid developing method, fur developing method, printing developing method, An electrophotographic method such as a development method by electrostatic induction can be used.

Among these dry coatings, in the present invention, for example, an electrostatic spray method can be preferably used. This electrostatic spraying method is a kind of powder coating, and specifically, a mixture of a fine powder coating composition and inorganic fine particles (hereinafter referred to as a powder mixture) at the tip of a spray gun is air. And a negative high voltage (for example,
-50 to -90 kV) to apply a negative charge to the powder mixture and, along with a grounded electrode to the back surface of the substrate,
Thus, the negatively charged powder mixture is carried to the substrate and electrostatically deposited by the electric field present between the spray gun and the grounded electrode.

FIG. 1 shows a preferred embodiment of the method of the present invention using such an electrostatic spray method. That is, roll 1
A continuous long base material (for example, a synthetic resin film) 2 unwound from the guide is guided into a booth 4 by a conveyor belt 3, where the powder mixture is electrostatically sprayed as described later. After being dry-coated, it is heated and melted by a fixing roll 5 and fixed, and then wound around a roll,
Or it is cut as appropriate. The transport belt 3 has a grounded (ie, positive) electrode 6 on the back side along the base material to which it is transported. The powder mixture is conveyed from the storage tank 7 to the spray gun 8 by compressed air, while a negative high voltage is applied by a DC power supply 9 to a needle electrode (not shown) incorporated at the tip of the spray gun. The powder mixture is negatively charged. Thus, the powder mixture is carried to and adheres to the base paper by the electric field present between the spray gun and the electrodes along the substrate on the conveyor belt. In this way, the substrate on which the powder mixture is dry-coated is guided to the fixing roll 5, where the powder mixture is heated and melted, fixed on the substrate, and a resin layer is formed. The recording paper 10 according to the present invention can be obtained.

[0071]

As described above, the image receiving sheet for recording with a sublimable dye or an ink jet ink according to the present invention has an undercoat layer composed of a resin layer on a base material, and is composed of a powder coating composition. The resin layer becomes
Strongly adhered to the substrate. Therefore, according to such an image receiving sheet, even when the surface is rubbed or when the substrate is bent, the resin layer serving as the receiving layer is not easily separated from the substrate.

According to the present invention, even when a resin film having an extremely smooth surface, for example, a polyester (polyethylene terephthalate) film is used as the substrate, the undercoating made of resin is previously formed on the substrate. A layer is formed, and the powder coating composition can be sprayed onto the undercoat layer without slipping by electrostatic spraying or the like, and thus, the powder coating composition can be adhered to the undercoat layer. A uniform thin resin layer made of the coating composition can be formed.

Thus, according to the present invention, it is possible to easily and inexpensively manufacture a high-quality image-receiving sheet for recording which is excellent in acceptability of dyes and inks, and therefore excellent in recording properties, and excellent in durability. it can.

[0074]

EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited by these examples.

Example 1 (Production of Image Transfer Sheet for Sublimation Dye Thermal Transfer Recording) 50 parts by weight of polyester resin (FC-714 manufactured by Mitsubishi Rayon Co., Ltd.), styrene-acrylic copolymer resin (manufactured by Sanyo Chemical Industry Co., Ltd.) (TB-1800) 30 parts by weight, 5 parts by weight of polypropylene wax (offset preventing agent) and 10 parts by weight of titanium dioxide were melt-kneaded at 150 to 160 ° C. for 3 to 5 minutes using a biaxial melt kneader. After cooling, the obtained kneaded product was pulverized and classified to obtain a white powder coating composition having an average particle size of 10 μm. 95 parts by weight of this white powder coating composition was mixed with 5 parts by weight of hydrophobic anhydrous silica H-2000 / 4 (manufactured by Wacker Chemicals East Asia) to form a white powder mixture (anhydrous silica) for the receiving layer. 5% by weight)
I got

Separately, a white powder for the undercoat layer was prepared in the same manner as described above except that 14.9 parts by weight of titanium dioxide and 0.1 part by weight of hydrophobic anhydrous silica were used in the preparation of the powder mixture. A mixture (body ratio 0.1% by weight of anhydrous silica) was obtained.

As the base material, commercially available plain paper, a card made of rigid polyvinyl chloride resin and a styrene-acryl copolymer resin card (a so-called white telephone card, the surface of which is made of a styrene-acryl copolymer resin) were used. The white powder mixture for the undercoat layer was sprayed onto the entire surface of each surface using a commercially available electrostatic spray device, and was adhered.

Next, in the same manner, the white powder mixture for the receiving layer was sprayed thereon by using the same electrostatic spraying device as above, and the mixture was heated and melted. Upon cooling, a receiving layer was formed. The total thickness of the undercoat layer and the receiving layer was 40 μm.

The thermal transfer recording performance of the thus-obtained image receiving sheet for sublimation dye thermal transfer recording was evaluated as follows. That is, using a sublimation type thermal transfer type high-speed printer, the ink sheet and the image receiving sheet are overlapped so that the surface on the dye layer side and the receiving layer are in contact under the following printing conditions, and the ink sheet is heated by a thermal head. Then, the dye was transferred to the receiving layer of the image receiving sheet. In this transfer image, when the print density was measured, all of yellow, magenta, and cyan were found in the image receiving sheet using any of the base materials.
It was 1.7 or more.

Transfer conditions of sublimation type thermal transfer type high-speed printer Thermal head: KGT-219-12MPL2 (manufactured by Kyocera) Driving voltage: 17 V Line speed: 4 ms Sublimable dye on ink sheet Sublimable dye Yellow: Styryl yellow dye Sublimable dye Magenta: Anthraquinone-based magenta dye Sublimable dye Cyan: Indoaniline-based cyan dye Test method The print density is a densitometer (Konica's PDA-60).
Was used to measure the reflection density.

Comparative Example 1 (Production of Image Receiving Sheet for Sublimation Dye Thermal Transfer Recording) Example 1
In the preparation of the powder mixture for the undercoat layer in
A white powder mixture for an undercoat layer (anhydrous silica ratio of 4% by weight) was obtained in the same manner as in Example 1, except that 11 parts by weight of titanium dioxide and 4 parts by weight of hydrophobic anhydrous silica were used.

After spraying the white powder mixture for the undercoat layer on the substrate in the same manner as in Example 1, the same white powder mixture for the receiving layer as in Example 1 was sprayed thereon. After being deposited, heated, melted, and cooled to form a receiving layer. The thickness of the undercoat layer and the receiving layer is 40 μm in total
Met.

Example 2 (Production of Powder Coating Composition for Image Receiving Sheet for Inkjet Recording) 80 parts by weight of styrene / acrylic copolymer resin (UNI-3000 manufactured by Sanyo Chemical Industry Co., Ltd.), polypropylene wax (offset) Inhibitor) 5 parts by weight and 10 parts by weight of titanium dioxide were mixed in a biaxial melt kneader at 150 to 1
Melt kneading was performed at 60 ° C. for 3 to 5 minutes. After cooling, the obtained kneaded product was pulverized and classified to obtain a white powder coating composition having an average particle size of 10 μm. 9 to this white powder coating composition
5 parts by weight of hydrophilic anhydrous silica 200CF (manufactured by Nippon Aerosil Co., Ltd.) was mixed with 5 parts by weight to obtain a white powder mixture (anhydrous silica 5% by weight) for the receiving layer.

Separately, a white powder for forming an undercoat layer was prepared in the same manner as described above except that 14.9 parts by weight of titanium dioxide and 0.1 part by weight of hydrophilic anhydrous silica were used in the preparation of the powder mixture. A mixture (body ratio 0.1% by weight of anhydrous silica) was obtained.

In the same manner as in Example 1, the white powder mixture for the undercoat layer was sprayed on a substrate, and the white powder mixture for the receiving layer was sprayed thereon and adhered thereto. Thereafter, the mixture was heated, melted, and cooled to form a receiving layer. The total thickness of the undercoat layer and the receiving layer was 40 μm.

When the ink-jet recording sheet thus obtained was subjected to ink-jet recording using a commercially available ink-jet printer (manufactured by Epson), a high-quality recorded image could be obtained quickly.

When the density of the image obtained by ink jet recording obtained for each image receiving paper was measured for reflection density using a densitometer (PDA-60 manufactured by Konica), it was found that the density of yellow, magenta and cyan was 1%. .7 or more.

Comparative Example 2 (Production of Image Receiving Sheet for Ink-Jet Recording) Except that 11 parts by weight of titanium dioxide and 4 parts by weight of hydrophobic anhydrous silica were used in the preparation of the powder mixture for the undercoat layer in Example 2. In the same manner as in Example 2, a white powder mixture (4% by weight of anhydrous silica) for an undercoat layer was obtained.

In the same manner as in Example 1, the white powder mixture for the undercoat layer was sprayed on a substrate, and then the same white powder mixture for the receiving layer as in Example 2 was sprayed thereon. After being deposited, heated, melted, and cooled to form a receiving layer. The thickness of the undercoat layer and the receiving layer is 40 μm in total
Met.

Example 3 (Production of Image Receiving Sheet for Inkjet Recording) Polyester resin (FC-344 manufactured by Mitsubishi Rayon Co., Ltd., acid value 6.9)
(mg KOH / g), 80 parts by weight, 5 parts by weight of a polypropylene wax (anti-offset agent) and 10 parts by weight of titanium dioxide were melt-kneaded at 150 to 160 ° C. for 3 to 5 minutes using a biaxial melt kneader. After cooling, the obtained kneaded product was pulverized and classified to obtain a white powder coating composition having an average particle size of 10 μm. 95 parts by weight of this white powder coating composition was mixed with 5 parts by weight of hydrophilic anhydrous silica 200CF (manufactured by Nippon Aerosil Co., Ltd.), and a white powder mixture for the receiving layer (5% by weight of anhydrous silica) was obtained. Obtained.

Separately, in the same manner as described above, except that a polyester resin having an acid value of 20.0 mgKOH / g prepared experimentally was used instead of the polyester resin FC-344 in the preparation of the powder mixture. A white powder mixture (5% by weight of anhydrous silica) for the coating layer was obtained.

In the same manner as in Example 1, the white powder mixture for the undercoat layer was sprayed on a substrate, and then the white powder mixture for the receiving layer was sprayed thereon and adhered thereto. Thereafter, the mixture was heated, melted, and cooled to form a receiving layer. The total thickness of the undercoat layer and the receiving layer was 40 μm.

When the image-receiving sheet thus obtained was subjected to ink-jet recording using a commercially available ink-jet printer (manufactured by Epson), a high-quality recorded image could be obtained quickly.

When the density of the image obtained by ink jet recording obtained for each of the image receiving papers was measured for the reflection density using a densitometer (PDA-60 manufactured by Konica), it was found that the density was 1% for all of yellow, magenta and cyan. .7 or more.

Comparative Example 3 (Production of Image Receiving Sheet for Ink-Jet Recording) In the preparation of the powder mixture for the undercoat layer in Example 3, a polyester resin having an acid value of 9.7 mgKOH / g prepared experimentally was used. Except that, in the same manner as in Example 3, a white powder mixture for an undercoat layer (proportion of anhydrous silica: 5% by weight)
I got

In the same manner as in Example 1, the white powder mixture for the undercoat layer was sprayed on a substrate, and then the same white powder mixture for the receiving layer as in Example 3 was sprayed thereon. After being deposited, heated, melted, and cooled to form a receiving layer. The thickness of the undercoat layer and the receiving layer is 40 μm in total
Met.

Example 4 (Production of Image Transfer Sheet for Sublimation Dye Thermal Transfer Recording) 50 parts by weight of polyester resin (FC-714 manufactured by Mitsubishi Rayon Co., Ltd.), styrene-acrylic copolymer resin (manufactured by Sanyo Chemical Industry Co., Ltd.) (TB-1800) 30 parts by weight, 5 parts by weight of polypropylene wax (offset preventing agent) and 10 parts by weight of titanium dioxide were melt-kneaded at 150 to 160 ° C. for 3 to 5 minutes using a biaxial melt kneader. After cooling, the obtained kneaded product was pulverized and classified to obtain a white powder coating composition having an average particle size of 10 μm. 95 parts by weight of this white powder coating composition was mixed with 5 parts by weight of hydrophobic anhydrous silica H-2000 / 4 (manufactured by Wacker Chemicals East Asia) to form a white powder mixture (anhydrous silica) for the receiving layer. 5% by weight)
I got

Epoxy resin (Nihon Ciba Geigy Co., Ltd.)
(Araldite) was applied on a substrate and dried to form an undercoat layer having a thickness of 10 μm. Next, using a commercially available electrostatic spray device, the white powder mixture is applied to the entire surface of the undercoat layer, then heated, melted, and cooled to form a receiving layer having a thickness of 20 μm. did.

When the thermal transfer recording performance of the thus-obtained image receiving sheet for sublimable dye thermal transfer recording was evaluated in the same manner as in Example 1, the print density of the transferred image was determined for the image receiving sheet using any of the substrates. Also yellow, magenta,
It was 1.7 or more for all of cyan.

Comparative Example 4 (Production of Image Receiving Sheet for Sublimation Dye Thermal Transfer Recording) Example 4
In, without forming an undercoat layer on the substrate, immediately using a commercially available electrostatic spray device, immediately adhere the same white powder mixture as in Example 4 on the entire surface of the substrate, and then heated,
Upon melting and cooling, a receiving layer was formed. The thickness of the receiving layer was 20 μm.

(Evaluation of Performance of Image Receiving Sheet) For each of the image receiving sheet for sublimation dye thermal transfer recording and the image receiving sheet for ink jet recording obtained as described above, the receiving layer was visually observed, and streaks were formed on the receiving layer. When there is unevenness, or when bent at the center of the substrate, when the receiving layer peeled from the substrate along the bent portion as a defect,
When these were not observed, it was evaluated as good. Table 1 shows the results.

[0102]

[Table 1]

[Brief description of the drawings]

FIG. 1 shows an example of an apparatus configuration for manufacturing a powder-coated paper according to the present invention.

[Description of Signs] 1 ... roll, 2 ... substrate, 3 ... conveying belt, 4 ... booth,
5: fixing roll, 6: electrode, 7: powder coating composition storage tank, 8: spray gun, 9: DC power supply, 10: recording image receiving sheet.

Claims (10)

[Claims] An undercoat layer made of a resin is provided on a substrate, and a resin layer made of a powder coating composition is provided thereon as a receiving layer for receiving a sublimable dye or an ink jet ink. Recording image receiving sheet. 2. The recording image receiving sheet according to claim 1, wherein the resin is an epoxy resin, an acrylic resin, a nitrile rubber, a chloroprene rubber, a urethane resin, or an epoxy polyamide resin. 3. A first powder mixture comprising a first powder coating composition containing a first resin and a first colorant, and first inorganic fine particles having an average particle diameter of 1 nm to 1 μm added to the first powder coating composition. A second powder mixture obtained by adding a second inorganic fine particle having an average particle diameter of 1 nm to 1 μm to a second powder coating composition containing a second resin and a second colorant on the pulling layer. In a recording image receiving sheet having a resin layer as a receiving layer for receiving a sublimable dye or an inkjet ink, the amount of the first inorganic fine particles in the first powder mixture is less than 1% by weight, and The amount of the second inorganic fine particles in the body mixture is 1 to 1
An image receiving sheet for recording in a range of 0% by weight. 4. A first powder coating composition containing a first resin and a first colorant, wherein first inorganic fine particles having an average particle diameter of 1 nm to 1 μm are added in a range of 1 to 10% by weight. A second powder coating composition containing a second resin and a second colorant is coated on the undercoat layer composed of the powder mixture of No. 1 with an average particle diameter of 1 nm to 1 μm.
A recording image receiving sheet having a resin layer composed of a second powder mixture to which m second inorganic fine particles are added in a range of 1 to 10% by weight as a receiving layer for receiving a sublimable dye or an inkjet ink. The resin in the first powder coating composition has an acid value in the range of 15 to 25 mg KOH / g, and the resin in the second powder coating composition has 15 mg KO.
An image receiving sheet for recording having an acid value of less than H / g. 5. An undercoat layer made of a resin is formed on a base material,
A powder coating composition containing a resin and a colorant is dry-coated thereon, heated and melted and fixed, and the resin layer made of the powder coating composition is used to receive a sublimable dye or an inkjet ink. A method for producing a recording image-receiving sheet, characterized in that it is formed as a receptive layer. 6. The image receiving apparatus for recording according to claim 5, wherein the undercoat layer is formed by applying a solution of a resin on the base material, applying the molten resin, or bonding a film of the resin. Sheet manufacturing method. 7. The method according to claim 6, wherein the resin solution is a solution of an epoxy resin, an acrylic resin, a nitrile rubber, a chloroprene rubber, a urethane resin, or an epoxy polyamide resin. 8. A first powder mixture obtained by adding first inorganic fine particles having an average particle diameter of 1 nm to 1 μm to a first powder coating composition containing a first resin and a first coloring agent. On top of this, a dry coating is applied and adhered to form an undercoat layer, on which a second powder coating composition comprising a second resin and a second colorant is then averaged. A second powder mixture to which second inorganic fine particles having a particle diameter of 1 nm to 1 μm are added is dry-coated, heated and melted and fixed, and thus the formed resin layer receives a sublimable dye or an inkjet ink. The amount of the first inorganic fine particles in the first powder mixture is less than 1% by weight, and the amount of the second inorganic fine particles in the second powder mixture is less than 1% by weight. A method for producing a recording image-receiving sheet having an amount of 1 to 10% by weight or less. 9. A first powder coating composition containing a first resin and a first colorant, wherein first inorganic fine particles having an average particle diameter of 1 nm to 1 μm are added in a range of 1 to 10% by weight. The powder mixture of 1 is dry coated onto a substrate and adhered to form an undercoat layer, and then a second resin containing a second resin and a second colorant is formed on the undercoat layer. Powder coating composition having an average particle size of 1 nm
A second powder mixture containing 1 to 10% by weight of a second inorganic fine particle having a thickness of 1 to 10 μm is dry-coated, heated and melted and fixed, and thus the resin layer formed is sublimable dye or A method for producing a recording image-receiving sheet having a receiving layer for receiving an ink-jet ink, wherein the resin in the first powder coating composition has an acid value in the range of 15 to 25 mgKOH / g, and the second powder A method for producing a recording image-receiving sheet, wherein the resin in the coating composition has an acid value in a range of less than 15 mgKOH / g. 10. An undercoat layer is formed on a substrate, and then a second powder mixture is dry-coated on the undercoat layer, and is heated and melted together with the undercoat layer to fix the undercoat layer. A method for manufacturing the recording image receiving sheet according to claim 8.