JPH02223485A - Thermal transfer image-receiving sheet - Google Patents

Abstract

PURPOSE:To improve a releasability at the time of thermal transfer to perform a high-speed recording by a method wherein a thermal transfer image-receiving sheet is formed by superposing a dye accepting layer made of an acrylic silicone urethane resin on a surface of a substrate film. CONSTITUTION:An acrylic silicone urethane resin is compounded with an additive, as necessary, and loaded with a suitable additive ; this is dissolved in a suitable organic solvent or prepared to a dispersion in an organic solvent or water. The organic solvent solution or dispersion is applied on at least one surface of a substrate film by using a gravure printing method, a screen printing method, or the like and dried to impart dye accepting properties, whereby a thermal transfer image-receiving sheet is obtained. As the substrate film, synthetic paper, wood free paper, plastic films, and the like are concretely mentioned. In addition, it is preferable that other dyeing resin and/or silicone releasant is incorporated in the dye accepting layer.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a thermal transfer image-receiving sheet useful in a thermal transfer method using a sublimable dye (thermally transferable dye), and more specifically, it is capable of high-speed recording and is fingerprint-resistant. The present invention aims to provide a thermal transfer image-receiving sheet capable of forming a high-density and high-resolution transferred image having excellent oil resistance such as plasticizer resistance and plasticizer resistance.

(Prior art) Inkjet methods, thermal transfer methods, etc. have been developed as methods for providing excellent monochrome or full-color images easily and at high speed in place of conventional general printing methods. The most excellent method is the so-called sublimation thermal transfer method, which uses sublimable dyes, as it has excellent continuous gradation properties and provides full-color images comparable to color photographs.

The thermal transfer sheet used in the above-mentioned sublimation type thermal transfer method has a dye layer containing sublimable dye formed on the side of the base film such as polyester film, and a dye layer containing a sublimable dye is formed on the side of the base film such as polyester film. A heat-resistant layer provided on the other side is generally used.

The dye layer surface of such a thermal transfer sheet is placed on an image receiving sheet having an image receiving layer made of polyester resin or the like, and by heating the thermal transfer sheet in an imagewise manner from the back side with a thermal head, the dye in the dye layer is transferred to the image receiving sheet. A desired image is formed.

(Problems to be Solved by the Invention) The thermal transfer method described above has the excellent advantage of being able to create different shades of image depending on the temperature of the thermal head. When the temperature of the thermal head is raised, the binder forming the dye layer softens and sticks to the image receiving sheet, resulting in the inconvenience that the thermal transfer sheet and the image receiving sheet adhere to each other, and in more extreme cases, when they are separated, A problem arises in that the dye layer peels off and is directly transferred to the surface of the image-receiving sheet.

One way to solve this problem is to incorporate a release agent such as silicone oil into the dye-receiving layer of the image-receiving sheet. Addition of a large amount of silicone causes problems such as a decrease in dye receptivity, discoloration of the image-receiving sheet and images, and deterioration of storage stability.

Furthermore, it is possible to form the dye-receiving layer with a silicone acrylic resin that itself has mold release properties, but the receptive layer made of this resin lacks adhesion to the base film and dye receptivity, and is hard and difficult to cushion. As a result, white spots occur during printing, making it impossible to form high-density and high-resolution images.

In addition, in the case of conventional thermal transfer image-receiving sheets, if a finger touches the formed image, or a plastic product containing a plasticizer or a plastic eraser comes into contact with it, fingerprints may appear or the dye may transfer to the plastic product, causing the image to disappear. Problems such as discoloration occur.

Therefore, an object of the present invention is to provide a thermal transfer image receiving device that is capable of forming high-density and high-resolution transferred images that have excellent releasability during thermal transfer, enable high-speed recording, and have excellent oil resistance such as fingerprint resistance and plasticizer resistance. It is to provide sheets.

(Means for solving problems) The above objects are achieved by the present invention as described below.

That is, the present invention is a thermal transfer image-receiving sheet characterized in that a dye-receiving layer is provided on the surface of a base film, and the dye-receiving layer is made of an acrylic silicone urethane resin.

(Function) By forming the dye-receiving layer from acrylic silicone urethane resin, mold release properties and
A thermal transfer image-receiving sheet having excellent dye stainability, fingerprint resistance, oil resistance, cushioning properties, etc. is provided.

Further, when the dye-receiving layer is formed solely from an acrylic silicone urethane resin having a large silicone segment content, although the above performance is excellent, the adhesion of the dye-receiving layer to the base film may be poor. In this case, the adhesion of the dye-receiving layer to the base film can be improved while maintaining the above performance by using other dye-receiving resins and a silicone mold release agent. At this time, since the acrylic silicone urethane resin and the silicone mold release agent have a certain degree of compatibility, defects such as discoloration do not occur based on the silicone mold release agent.

(Preferred Embodiments) Next, the present invention will be described in more detail by citing preferred embodiments.

The thermal transfer image-receiving sheet of the present invention consists of a base film and a dye-receiving layer provided on one side of the base film with an acrylic silicone urethane resin.

The base film used in the present invention includes synthetic paper (polyolefin type, polystyrene type, etc.), high quality paper, art paper, coated paper, cast coated paper, wallpaper, backing paper, synthetic resin or emulsion impregnated paper, and synthetic rubber latex. Various types of plastic films or sheets such as impregnated paper, synthetic resin-loaded paper, paperboard, cellulose fiber paper, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate, etc. can be used, and synthetic resins of these can be used. A white opaque film formed by adding a white pigment or a filler to a resin or a foamed sheet formed by foaming can also be used, but there are no particular limitations.

Furthermore, a laminate made of any combination of the above base films can also be used. Typical examples of laminates include cellulose fiber paper and synthetic paper, or synthetic paper of cellulose fiber paper and plastic film or sheet. The thickness of these base films may be arbitrary (for example, 10 to 3
The thickness is generally about 00 μm.

When the base film as described above has poor adhesion to the receptor layer formed on the surface, it is preferable to subject the surface to a brimer treatment or a corona discharge treatment.

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

In the present invention, the resin for forming the dye-receiving layer is an acrylic silicone urethane resin, and the acrylic silicone urethane resin may further have a fluorocarbon group. These acrylic silicone urethane resins are obtained by reacting an acrylic resin modified with a urethane resin with an alkoxysilane compound to bond pendant alkoxysilyl groups.

The above acrylic silicone urethane resin can be easily produced and used, and for example, UA-53F
(fluorine-containing acrylic silicone urethane resin, manufactured by Sanyo Chemical Industries), UA-40 (acrylic silicone urethane resin, manufactured by Sanyo Chemical Industries), TT-50H (acrylic silicone urethane resin, manufactured by Sanyo Chemical Industries), 5F18B (fluorine-containing acrylic silicone It can also be obtained from the market and used under trade names such as urethane resin (manufactured by Sanyo Chemical Industries). When used, these resins can be cured using organic metal compounds such as tin and titanium, acids, moisture, etc. as catalysts.

In the above acrylic silicone urethane resin, if the amount of acrylic segment is too small, dye receptivity will be insufficient, if the amount of silicone segment is too small, mold releasability will be insufficient, and if the amount of urethane segment is insufficient, the base material film will be insufficient. This results in insufficient adhesion and dyeability to
Therefore, the weight ratio of acrylic segment: urethane segment: silicone segment in a preferable acrylic silicone urethane resin is 10 to 80:10 to 80:10.
The range is from 50 to 50.

The above acrylic silicone urethane resins can be used alone or as a mixture, and if the content of silicone segments is high, the adhesion to the base film of the dye-receiving layer may be poor, so conventionally known dyes Dyeable resins, such as polyolefin resins such as polypropylene, halogenated polymers such as polyvinyl chloride and polyvinylidene chloride, vinyl polymers such as polyvinyl acetate and polyacrylic ester, and polyesters such as polyethylene terephthalate and polybutylene terephthalate. It is preferably used in combination with resins, 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. When used together, the acrylic silicone urethane resin is preferably used in a small amount (both account for 10% by weight of the total).

Furthermore, when the above-mentioned acrylic silicone urethane resin and other resins are used together, although the adhesion to the base film is excellent, the releasability during thermal transfer may be poor. In this case, a silicone-based mold release agent can be added to improve the releasability. In addition to the usual silicone oil and silicone wax, silicone mold release agents include epoxy-modified, alkyl-modified, amino-modified, carboxyl-modified, alcohol-modified, fluorine-modified, alkyl aralkyl polyether-modified, epoxy/polyether-modified, Modified silicone oil such as polyether modified silicone oil is desirable.

One or more types of mold release agents may be used. In addition, the amount of the release agent added is 1% of the total resin forming the dye receiving layer.
00 parts by weight, preferably 1 to 20 parts by weight. If the addition amount does not satisfy this range, the fingerprint resistance and plasticizer resistance will be insufficient, and if it is too large, problems such as stickiness and discoloration of the image will occur.

The thermal transfer image-receiving sheet of the present invention is prepared by dissolving the above-mentioned resin with necessary additives on at least one side of the above-mentioned base film in an appropriate organic solvent or dispersing it in an organic solvent or water. The dispersion can be prepared by, for example, gravure printing,
The dye-receiving layer is obtained by coating and drying by a forming method such as a screen printing method or a reverse roll coating method using a gravure plate.

When forming the above-mentioned receptor layer, pigments and fillers such as titanium oxide, zinc oxide, kaolin clay, calcium carbonate, and finely powdered silica are used to improve the whiteness of the receptor layer and further enhance the clarity of the transferred image. Can be added. or,
In order to further improve the resistance to change and fading of the transferred image formed on the receptor layer, especially the resistance to indoor change and fading and the resistance to dark place, ultraviolet absorbers and antioxidants can be added to the receptor layer.

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

Further, the image receiving sheet of the present invention can be applied to various uses such as thermal transfer recording sheets capable of thermal transfer recording, cards, sheets for transparent manuscript preparation, etc. by appropriately selecting the base film.

Furthermore, in the image-receiving sheet of the present invention, a cushion layer can be provided between the base film and the receptor layer if necessary, and by providing such a cushion layer, there is less noise during printing and it can correspond to image information. Images 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.

Moreover, a slippery layer can also be provided on the back surface of the base film. As the material of the slipping layer, methacrylate resin such as methyl methacrylate or corresponding acrylate resin,
Examples include vinyl resins such as vinyl chloride-vinyl acetate copolymer.

Furthermore, it is also 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, and for example, a detection mark that can be detected by a phototube detection device can be provided by printing on the back side of the base film.

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 polyester film, and conventionally known thermal transfer sheets are All can be used as they are in the present invention.

As the means for applying thermal energy during thermal transfer using the image-receiving sheet of the present invention, any conventionally known means can be used. 5 to 100 mJ/mrr by controlling the recording time using the recording device. By applying a certain amount of thermal energy, the intended purpose can be fully achieved.

(Effects) According to the present invention as described above, by forming the dye-receiving layer from an acrylic silicone urethane resin, excellent mold releasability, dye stainability and cushioning properties can be achieved without using a mold release agent. A thermal transfer image receiving sheet is provided.

Further, when the dye-receiving layer is formed solely from an acrylic silicone urethane resin having a low silicone segment content, although the above performance is excellent, the adhesion of the dye-receiving layer to the base film may be poor. In this case, the adhesion of the dye-receiving layer to the base film can be improved while maintaining the above performance by using other dye-receiving resins and a silicone mold release agent. At this time, since the acrylic silicone urethane resin and the silicone mold release agent have good compatibility, there are few drawbacks due to the silicone mold release agent.

Therefore, according to the present invention, there is provided a thermal transfer image-receiving sheet that has excellent releasability during thermal transfer, is capable of high-speed recording, and is capable of forming high-density and high-resolution transferred images with excellent oil resistance such as fingerprint resistance and plasticizer resistance. be done.

(Example) Next, the present invention will be explained in more detail by giving examples and comparative examples. In the text, parts or percentages are based on weight unless otherwise specified.

Example 1 Synthetic paper (Yubo FRG-150, thickness 150 μm, manufactured by Tamago Yuka Co., Ltd.) was used as a base film, and on one side of the paper, 5.0 g of a coating liquid of the following composition was applied with bar caulk when dried.
The thermal transfer image-receiving sheet of the present invention was obtained by coating and drying at a ratio of /rrf.

Fluorine-containing acrylic urethane silicone resin (UA-53F
, manufactured by Sanyo Chemical Industries, Ltd.) 15.0 parts curing catalyst (Ca
t, 55, manufactured by Sanyo Chemical Industries ■) 1.5 parts solvent (butyl acetate/toluene/xylene (2/1/2)
'83, 5 parts Example 2 A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except that a coating liquid having the following composition was used in place of the coating liquid in Example 1.

Fluorine-containing acrylic urethane silicone resin (LIA-53
F, manufactured by Sanyo Kasei Kogyo ■) 10.0 parts Polyester (Vylon 600, manufactured by Toyobo) 2.0 parts Vinyl chloride/vinyl acetate copolymer (#1000A, manufactured by Denki Kagaku Kogyo ■) 3.0 parts Curing catalyst ( Cat, 55, manufactured by Sanyo Chemical Industries ■) 1.5 parts solvent (methyl ethyl ketone/toluene/xylene (1/
1/21 83.5 parts Example 3 A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except that the following coating liquid was used in place of the coating liquid in Example 1.

Acrylic urethane silicone resin (LIA-40, manufactured by Sanyo Chemical Industries, Ltd.) 15.0 parts Curing catalyst (Cat, 55, manufactured by Sanyo Chemical Industries, Ltd.) 1.5 parts Solvent (xylene/cellosolve acetate (4/1) 18
3.5 parts Example 4 A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except that the following coating liquid was used in place of the coating liquid in Example 1.

Acrylic urethane silicone resin (UA-40, manufactured by Sanyo Chemical Industries, Ltd.) 8.0 parts Polyester (Vylon 290, manufactured by Toyobo Co., Ltd.) 7.0 parts Curing catalyst (Cat, 55, manufactured by Sanyo Chemical Industries, Ltd.) 1.5 parts
Part solvent (methyl ethyl ketone/xylene/cellosolve acetate (2/4/l)) 83.5 parts Example 4 The following coating liquid was used in place of the coating liquid in Example 1, and the other conditions were the same as in Example 1. A thermal transfer image-receiving sheet of the present invention was obtained.

Fluorine-containing acrylic urethane silicone resin (UA-53F
, manufactured by Sanyo Chemical Industries ■), 10.0 parts Polyester (Vylon 600, manufactured by Toyobo) 10.0 parts Curing catalyst (Cat, 65MG, manufactured by Sanyo Chemical Industries ■) 0
．． 5 parts amino-modified silicone (X-22-3050C1 manufactured by Shin-Etsu Chemical Co., Ltd.) 0.5 parts epoxy-modified silicone (X-22-3000E, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.5 parts Solvent (ethyl acetate/toluene/MEK, 2:1:1) 88.5 parts Example 5 A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except that a coating liquid having the following composition was used in place of the coating liquid in Example 1. Ta.

Fluorine-containing acrylic urethane silicone resin (UA-53F
1. (manufactured by Sanyo Chemical Industries, Ltd.) 10.0 parts vinyl chloride.
Vinyl acetate copolymer (#1000A, manufactured by Denki Kagaku Kogyo ■) 10.0 parts Curing catalyst (Cat,
55, manufactured by Sanyo Chemical Industries ■) 0.5 parts Amino-modified silicone (X-22-3050G, manufactured by Shin-Etsu Chemical ■) 0.5 parts Epoxy-modified silicone (X-22-3000E, manufactured by Shin-Etsu Chemical ■) 0. 5 parts Solvent (ethyl acetate/toluene/MEK, 2:I:1) 88.5 parts Example 6 The following coating solution was used in place of the coating solution in Example 1, and the other procedures were the same as in Example 1. A thermal transfer image-receiving sheet of the present invention was obtained.

Fluorine-containing acrylic urethane silicone resin (UA-53F
1, manufactured by Sanyo Chemical Industries ■) 100 parts Vinyl chloride-acrylic styrene copolymer 10.0 parts Curing catalyst ((:at, 55, manufactured by Sanyo Chemical Industries ■) 0,
5 parts Epoxy-modified silicone (X-22-3000T, manufactured by Shin-Etsu Chemical ■) 0.5 parts Carboxylic acid-modified silicone (X-22-8706, manufactured by Shin-Etsu Chemical ■) 05 parts Solvent (in ethyl acetate/toluene/ME) , 2:1:1) 88.5 parts Example 7 A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except that the following coating liquid was used in place of the coating liquid in Example 1.

Fluorine-containing acrylic urethane silicone resin (UA-53F
, Sanyo Chemical Co., Ltd.) 7.0 parts Vinyl chloride-acrylic-styrene copolymer 1000 parts Catalyst-curing silicone (X-62-1212, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.5 parts Silicone curing catalyst (Pi-507) , manufactured by Sanyo Chemical Industries, Ltd.)
0.05 part Solvent (ethyl acetate/toluene/MEK, 2:1:1) 82.45 parts Example 8 A coating solution having the following composition was used in place of the coating solution in Example 1, and the other parts were as in Example 1. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1.

Fluorine-containing acrylic urethane silicone resin (UA-53F
, manufactured by Sanyo Chemical Industries, Ltd.) 5.0 parts polyester (K
A1039-U-18, manufactured by Nippon Gosei ■) 8.0 parts Vinyl chloride/vinyl acetate copolymer ($ll000A, manufactured by Denki Kagaku ■) 5.0 parts Amino-modified silicone (X-22-3050G, Shin-Etsu Chemical (manufactured by ■) 0.5 parts Epoxy-modified silicone (X-22-3000E, manufactured by Shin-Etsu Chemical ■) 0.5 parts Solvent (ethyl acetate/
Toluene/MEK, 2:1・1) 81.0 parts Comparative Example 1 Thermal transfer of Comparative Example was carried out in the same manner as in Example 1 except that a coating liquid with the following composition was used in place of the coating liquid in Example 1. An image receiving sheet was obtained.

Polyester (Vylon 600, manufactured by Toyobo) 4.0 parts Vinyl chloride/vinyl acetate copolymer (#1000A, manufactured by Denki Kagaku Kogyo ■) 6.0 parts Amino-modified silicone (X-22-3050C1 manufactured by Shin-Etsu Chemical)
0.2 parts epoxy modified silicone (X-22-300E, manufactured by Shin-Etsu Chemical)
0.2 parts Methyl ethyl ketone/toluene (weight ratio 1/1) 89.6 parts Comparative example 2 A coating solution having the following composition was used in place of the coating solution in Example 1, and the other conditions were the same as in Example 1. A comparative thermal transfer image-receiving sheet was obtained.

Acrylic silicone resin (XS-315, manufactured by Toagosei Kagaku Kogyo ■) 15.0 parts Solvent (toluene) 85.0 parts Comparative Example 3 A coating liquid with the following composition was used in place of the coating liquid in Example 1, A thermal transfer image-receiving sheet of a comparative example was obtained in the same manner as in Example 1.

Polyester (Byron 600, manufactured by Toyobo ■) 10.
0 parts Vinyl chloride/vinyl acetate copolymer (#1000A, manufactured by Denki Kagaku Kogyo ■) 8.0 parts Catalyst curing silicone (X-62-1212, manufactured by Shin-Etsu Chemical ■)
0.5 part silicone curing catalyst (PL-507, manufactured by Sanyo Chemical Industries, Ltd.)
0.05 part solvent (MEK/)-luene,
1:1) 81.45 parts Comparative Example 4 A thermal transfer image-receiving sheet of a comparative example was obtained in the same manner as in Example 1 except that a coating liquid having the following composition was used in place of the coating liquid in Example 1.

Polyester (KA1039-U-18, manufactured by Nippon Gosei ■) 15.0 parts Amino-modified silicone (X-22-3050C1 manufactured by Shin-Etsu Chemical ■) 0.5 parts Epoxy-modified silicone (X-22-300, manufactured by Shin-Etsu Chemical ■) ■) 0.5 part solvent (MEK
/) Luene, 1:1) 84.0 parts An ink composition for forming a dye layer having the following composition was prepared, and a dry coating amount of 1.0 g was applied to a 6 μm thick polyethylene terephthalate film whose back side was heat-resistant treated. /nr was coated with a wire bar and dried to obtain a thermal transfer sheet.

Disperse dye (Kayaset Blue 14, manufactured by Nippon Kayaku) 4,
0 parts polyvinyl butyral resin (S-LEC BX-1, manufactured by Mikki Chemical) 4.3 parts fluorine fatty acid modified silicone wax (X-24-3525, manufactured by Shin-Etsu Chemical) 0.4 parts methyl ethyl ketone/toluene (weight ratio 1/1) 80 .0 parts Inbutanol 10.0 parts The above thermal transfer image-receiving sheet and thermal transfer sheet were stacked with their respective dye layers and dye-receiving surfaces facing each other, and a heat-sensitive sublimation transfer printer (VY-50, Newly manufactured by Hitachi Seisakusho) was used. ), 40m
Medium-density solid printing was performed using a thermal head from the back side of the thermal transfer sheet using a printing energy of J/mrrr, and the results shown in Table 1 below were obtained.

(Margins below) Pressure side criteria: (I) Release property: Peelability between the thermal transfer sheet and the image receiving sheet during printing ○: Easily peeled off, no problem.

△: Slight adhesion, but no practical problem.

(U) Print density: Measured using a Macbeth reflection densitometer (relative optical density when Comparative Example 1 is set as 1.00) (Discoloration of old image receiving sheet = 80°C (dry)) Visual observation ○: No change.

×: There is discoloration.

(IV) Storage stability of printed matter = Visual observation of printed area after standing at 40°C (90% RH) for 48 hours ○: No change.

×: There is discoloration.

(V) Fingerprint resistance: Place fingerprints on the printed area at 50°C (dry) 4
Visual observation of the printed area after being left for 8 hours ○: No change.

×: The part with fingerprints is discolored.

(Vl) Plasticizer resistance: A plastic eraser was brought into contact with the printed area, and the printed area was left at 40° C. for 12 hours under a load of 50 g/rrr, after which the printed area was observed with the naked eye.○: No coloration on the eraser.

△: The eraser is slightly colored.

×: The eraser is colored.

(vn) Adhesion between receptor layer and base material: Sellotape peeling test ○: No peeling.

△D Some parts peel off, but there is no practical problem.

×: 50% or more peeling.

Claims (4)

[Claims] (1) A dye-receiving layer is provided on the surface of the base film,
A thermal transfer image-receiving sheet, wherein the dye-receiving layer is made of an acrylic silicone urethane resin. (2) The thermal transfer image-receiving sheet according to claim 1, wherein the dye-receiving layer further contains another dye-dyeing resin and/or a silicone release agent. (3) The thermal transfer image-receiving sheet according to claim 1, wherein the weight ratio of acrylic segment: urethane segment: silicone segment of the acrylic silicone urethane resin is 10 to 80:10 to 80:10 to 50. (4) The thermal transfer image-receiving sheet according to claim 2, wherein the amount of the silicone release agent is 1 to 20 parts by weight per 100 parts by weight of the total resin forming the dye-receiving layer.