JPH0740670A - Thermal transfer, image receiving sheet - Google Patents

Abstract

PURPOSE:To obtain a sheet which has excellent releasability at the time of thermal transfer and forms recording images of excellent coloring density and clearness. CONSTITUTION:The sheet is provided with a base sheet 2 and a dye accepting layer 2 at one surface of the base sheet 2. The dye accepting layer 3 contains a thermoplastic resin of 15000 or smaller average molecular weight by 30-100wt.% of the resin component constituting the dye accepting layer 3, and/or vinyl chloride styrene copolymer by 5-100wt.% of the resin component constituting the dye accepting layer 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer image-receiving sheet, and more specifically, it has excellent fast-drying properties of a solvent in the manufacturing process, excellent releasability during thermal transfer, and excellent recording density and sharpness. The present invention relates to a thermal transfer image receiving sheet capable of forming an image.

[0002]

2. Description of the Related Art Conventionally, when the output printing of a computer or a word processor is performed by a thermal sublimation transfer method, a thermal transfer sheet having a dye layer provided on one surface of a base material sheet is used. This thermal transfer sheet is provided with a heat-resistant base sheet and a dye layer formed by applying and drying an ink in which a sublimable dye is mixed with a binder on the base sheet. Then, heat is applied from the back side of the thermal transfer sheet by the thermal head to transfer a large number of three-color or four-color dots to the transfer material to form a full-color image on the transfer material.

The formed image is clear and excellent in transparency because the color material used is a dye, and has high reproducibility and gradation of intermediate colors, and it is possible to form a high-quality image equivalent to a conventional full-color photographic image. It is possible.

However, it is impossible to form a high-quality image as described above on a transfer material having no dye-dyeing property such as ordinary plain paper. Many thermal transfer image-receiving sheets in which a dye receiving layer is formed on the sheet have been proposed. For example, JP-A-57-169
No. 370, No. 57-207250, No. 60-2579.
No. 3, etc., dyes using polyester resins, vinyl resins such as polyvinyl chloride resins, polycarbonate resins, polyvinyl butyral resins, acrylic resins, cellulose resins, olefin resins, polystyrene resins, etc. What formed the receiving layer is disclosed. According to these materials, the dye-diffusing property at the time of thermal transfer can be improved by forming the dye-receiving layer by containing the above-mentioned resin having a high dyeing property as a main component, or by including a plasticizer in the receiving layer. I'm good.

[0005]

However, in the conventional thermal transfer image-receiving sheet as described above, after coating with the dye-receptive layer coating solution, the solvent of the coating solution remains on the image-receiving sheet and the sheet is dried. However, there is a problem that it takes time to remove the residual solvent.

Further, when the main component resin constituting the dye receiving layer is a commonly used ordinary polyester resin,
The dye receiving layer surface is scratched by the back surface of the image receiving sheet during transportation, and is fused by heat from the thermal head during actual image formation, and a large peeling noise is generated during peeling, or the dye layer is transferred layer by layer, There is a problem that the so-called abnormal transfer occurs in which the dye receiving layer is peeled off from the substrate.

As a means for solving such a problem of releasability, a method of curing the dye receiving layer with a terminal hydroxyl group by using a crosslinking agent such as an isocyanate compound or blending with a thermosetting resin is considered. In any case, there is a problem that the dyeing property is deteriorated.

The present invention was devised in view of such circumstances, and an object thereof is a thermal transfer image-receiving sheet which can be adapted to a thermal transfer system using a sublimable dye and which is excellent in quick-drying at the time of production. (That is, the solvent of the dye-receiving layer coating solution escapes well), and a thermal transfer image-receiving sheet excellent in releasability from a thermal transfer sheet during image formation, color density and sharpness is provided.

[0009]

In order to achieve such an object, the thermal transfer image-receiving sheet of the present invention comprises a base material sheet and a dye receiving layer provided on one surface of the base material sheet. In the dye receiving layer, a thermoplastic resin having a number average molecular weight of 15,000 or less is used in an amount of 30 to 10 of the resin component of the dye receiving layer.
0% by weight, or a vinyl chloride-styrene copolymer was contained in an amount of 5 to 100% by weight of the resin component constituting the dye receiving layer.

[0010]

A thermoplastic resin having a number average molecular weight of 15,000 or less is contained in an amount of 30 to 100% by weight of the dye receiving layer constituting resin, or a vinyl chloride-styrene copolymer is contained in an amount of 5 to 100% by weight of the dye receiving layer constituting resin. Therefore, it is possible to form a recorded image which is excellent in quick-drying property during production, and is excellent in releasability from a thermal transfer sheet during image formation, color density and sharpness.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic sectional view of a thermal transfer image-receiving sheet of the present invention. In FIG. 1, the thermal transfer image-receiving sheet 1 includes a base material sheet 2 and a dye receiving layer 3 formed on one surface of the base material sheet 2.

The substrate sheet 2 is, for example, a synthetic paper such as polyolefin-based or polystyrene-based paper, high-quality paper, art paper, coated paper, cast coated paper, wallpaper, backing paper, synthetic resin-impregnated paper, emulsion-impregnated paper, synthetic rubber. Various papers such as latex-impregnated paper, synthetic resin internal paper, paperboard, cellulose fiber paper, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate, etc. can be used. A white opaque film formed by adding a white pigment or a filler to these synthetic resins or a foamed sheet can also be used, and is not particularly limited.

The base sheet 2 may be a laminated body made of any combination of the above materials. Typical examples in this case include cellulose fiber paper and synthetic paper, or cellulose fiber paper and plastic film or sheet laminated synthetic paper. The thickness of these base material sheets 2 may be arbitrary, and for example, a thickness of about 10 to 300 μm is general.

The substrate sheet 2 as described above is preferably subjected to a primer treatment or a corona discharge treatment on its surface when the adhesion between the substrate sheet 2 and the dye receiving layer 3 formed thereon is poor.

The dye receiving layer 3 formed on the surface of the base sheet 2 is for receiving the sublimable dye transferred from the thermal transfer sheet and maintaining the formed screen. In the invention, a thermoplastic resin having a number average molecular weight of 15,000 or less is contained in an amount of 30 to 100% by weight of the dye receiving layer constituting resin, or a vinyl chloride-styrene copolymer is contained in an amount of 5 to 100% by weight of the dye receiving layer constituting resin. It is included. Of course, it is also a preferable embodiment to include both of them.

The thermoplastic resin contained in the dye receiving layer 3 is, for example, a polyester resin, particularly preferably a polyester resin shown in Table 1 below, a vinyl resin such as polyvinyl chloride resin, or a polycarbonate resin. Resin, polyvinyl butyral resin, acrylic resin,
Any thermoplastic resin such as cellulose resin, olefin resin and polystyrene resin may be used, but the number average molecular weight of these resins is 15,000 or less. When the number average molecular weight exceeds 15,000, there arises a disadvantage that the drying property at the time of production, that is, the solvent of the dye-receptive layer coating solution is not easily removed. Further, when the number average molecular weight is too small, Tg is lowered, the printing dots are blurred, the printing dots are blurred when stored at 60 ° C., and the peeling property from the thermal transfer sheet during thermal transfer is deteriorated. Will occur. The lower limit of the number average molecular weight is about 2000. Such a thermoplastic resin is contained in an amount of 30 to 100% by weight, more preferably 30 to 70% by weight, of the resin component constituting the dye receiving layer 3. If this value is less than 30% by weight, the effect of mixing the thermoplastic resin is reduced, which is a disadvantage.

Among these thermoplastic resins, a reduced viscosity of 0.40 [η ^SP / C] or less, especially 0.25 to 0.25
A polyester resin of 0.40 [η ^SP / C] is preferable.
If the reduced viscosity exceeds 0.40 [η ^SP / C], the drying property during production, that is, the solvent of the coating liquid for the dye-receptive layer, will not be removed easily.

In the polyester resin, there is a correlation between the reduced viscosity and the number average molecular weight, and 0.40 [η ^SP /
The value of C] substantially corresponds to the number average molecular weight of 15,000.

[0020]

[Table 1] In place of or in addition to such a thermoplastic resin, the dye receiving layer 3 contains a vinyl chloride-styrene copolymer.

The vinyl chloride styrene copolymer of the present invention means vinyl chloride acrylic styrene copolymer, vinyl chloride vinyl acetate acrylic styrene copolymer, vinyl chloride vinyl acetate styrene copolymer, vinyl butyl acryl styrene copolymer. Coalesced, vinyl butyl acrylic copolymer,
Vinyl chloride methacryl styrene copolymer, vinyl chloride vinyl acetate methacryl styrene copolymer, vinyl chloride butyl acryl methacryl styrene copolymer, vinyl chloride vinyl butyl acryl methacryl styrene copolymer and the like can be mentioned. As the acrylic monomer used here, butyl acrylic is most preferred.

Such a vinyl chloride-styrene type copolymer is contained in an amount of 5 to 100% by weight, and more preferably 10 to 50% by weight, of the resin constituting the receiving layer.

If this value is less than 5% by weight, the effect of containing such a resin will be extremely reduced.

The vinyl chloride-styrene copolymer used in the present invention has a monomer weight ratio of vinyl chloride 60-9.
It is preferably within the range of 0%, styrene 5 to 30%, and acrylic 5 to 30%.

It is also a very preferable embodiment that the dye receiving layer 3 is formed by mixing the thermoplastic resin having the number average molecular weight of 15,000 or less and the vinyl chloride-styrene copolymer. In this case, the total amount mixed is preferably in the range of 10 to 100% by weight, particularly 40 to 70% by weight of the resin component of the dye receiving layer. The content ratio of the thermoplastic resin and the vinyl chloride styrene copolymer is thermoplastic resin: vinyl chloride styrene copolymer = 10: 90 to 90:10, preferably 20:80 to 50:50.

By the way, the thermal transfer image-receiving sheet of the present invention is
An intermediate layer may be formed between the base sheet 2 and the dye receiving layer 3. Such an intermediate layer is a base sheet 2
It is for improving the adhesiveness between the dye-receiving layer 3 and the dye-receiving layer 3, and can be formed of polyurethane resin, acrylic resin, polyethylene resin, polypropylene resin, epoxy resin, etc., and has a thickness of about 0.1 to 25 μm. Is preferred.

A bubble-containing layer may be provided between the base sheet 2 and the intermediate layer as described above. This bubble-containing layer can be formed by using a foaming agent, and the foaming agent used is dinitropentamethylenetetramine, diazoaminobenzene, azobisisobenzene which decomposes by heat to generate gases such as oxygen, carbon dioxide and nitrogen. Examples thereof include decomposition type foaming agents such as butyronitrile and azodicarbamide, and microballoons obtained by microencapsulating a low boiling point liquid such as butane and pentane with a resin such as polyvinylidene chloride and polyacrylonitrile.

Further, an antistatic agent may be added to the dye receiving layer 3. The antistatic agent to be used is a known antistatic agent, for example, a quaternary ammonium salt, a cationic antistatic agent such as a polyamine derivative, an anionic antistatic agent such as an alkyl phosphate, and a nonionic antistatic agent such as a fatty acid ester. Is mentioned.

Next, the present invention will be described in more detail with reference to specific examples. In the text, part or% means
Unless otherwise specified, it is based on weight. Moreover, Mn represents a number average molecular weight. (Example 1) As a base material sheet, synthetic paper (Yupo FPG #
150: manufactured by Oji Yuka Co., Ltd.), and a coating solution having the following composition was applied to one surface of the coating solution by a wire bar so as to be 5 g / m ² and dried to obtain a thermal transfer image-receiving sheet of the present invention. . The drying conditions were 130 ° C. and 2 minutes.

Polyester resin for coating liquid (PEs-1 (Mn = 3000) in Table 1) 100 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Examples 2 to 3) The polyester resin PEs-1 in the coating liquid of Example 1 was replaced with PEs-2 to PEs- in Table 1 above.
I changed each to 3. Otherwise in the same manner as in Example 1, a thermal transfer image-receiving sheet of the present invention was obtained. That is, in Example 2, polyester resin PEs-2 (Mn = 400
0) in Example 3 and polyester resin PEs-3 (M
n = 15000) was used for each. (Example 4) Instead of the coating solution in Example 1 above, a coating solution having the following composition was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polyester resin (PEs-2 (Mn = 4000) in Table 1 above) 50 parts Polyester resin (PEs-4 (Mn = 27000) in Table 1 above) 50 parts X-62-1212 (Shin-Etsu Chemical) Industrial Co., Ltd. 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 5) A coating composition having the following composition is used instead of the coating liquid in Example 1 above. A working solution was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polyester resin (PEs-2 (Mn = 4000) in Table 1 above) 90 parts Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 10 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd. Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 6) A coating liquid having the following composition instead of the coating liquid in Example 1 above. Was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride acrylic styrene copolymer (# 400: Denki Kagaku Kogyo Co., Ltd.) 100 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd. )) 2 parts MEK / toluene = 1/1 500 parts (Example 7) Instead of the coating liquid in the above-mentioned Example 1, a coating liquid having the following composition was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride acrylic styrene copolymer (# 400: Denki Kagaku Kogyo Co., Ltd.) 20 parts Polyester resin (PEs-5 (Mn = 20000) in the above Table 1) 80 parts X-62-1212 ( Shin-Etsu Chemical Co., Ltd. 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 8) The following composition was used instead of the coating liquid in Example 1 above. The coating liquid of was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride acrylic styrene copolymer (# 400: Denki Kagaku Kogyo Co., Ltd.) 80 parts Polyester resin (PEs-5 (Mn = 20000) in Table 1 above) 20 parts X-62-1212 ( Shin-Etsu Chemical Co., Ltd. 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 9) The following composition was used instead of the coating liquid in Example 1 above. The coating liquid of was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride acrylic styrene copolymer (# 400: Denki Kagaku Kogyo Co., Ltd.) 8 parts Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 92 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd.) Industrial Co., Ltd. 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 10) Instead of the coating liquid in Example 1 above, a coating having the following composition was applied. A working solution was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polyester resin (PEs-2 (Mn = 4000) in Table 1 above) 35 parts Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 65 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd. Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Example 11) A coating liquid having the following composition in place of the coating liquid in Example 1 above. Was used. A thermal transfer image-receiving sheet of the present invention was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride / butyl acrylic / vinyl acetate / styrene copolymer (60/15/15/10) 80 parts Polyester resin (PEs-5 (Mn = 20000) in Table 1 above) 20 parts X- 62-1212 (Shin-Etsu Chemical Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Comparative Example 1) Instead of the coating liquid in Example 1 above. A coating solution having the following composition was used. A thermal transfer image receiving sheet of a comparative example was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 90 parts Polyester resin (PEs-2 (Mn = 4000) in the above Table 1) 10 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd. Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Comparative Example 2) A coating solution having the following composition in place of the coating solution in Example 1 above. Was used. A thermal transfer image receiving sheet of a comparative example was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polyester resin (PEs-4 (Mn = 27000) in Table 1) 100 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Comparative Example 3) Instead of the coating liquid in Example 1 above, a coating liquid having the following composition was used. A thermal transfer image receiving sheet of a comparative example was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 100 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Comparative Example 4) Instead of the coating liquid in Example 1 above, a coating liquid having the following composition was used. A thermal transfer image receiving sheet of a comparative example was obtained in the same manner as in Example 1 except for the above.

Coating liquid Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Ltd.) 75 parts Polyester resin (PEs-2 (Mn = 4000) in the above Table 1) 25 parts X-62-1212 (Shin-Etsu Chemical Co., Ltd. Co., Ltd.) 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts (Comparative Example 5) Instead of the coating solution in Example 1 above, a coating solution having the following composition Was used. A thermal transfer image receiving sheet of a comparative example was obtained in the same manner as in Example 1 except for the above.

Coating liquid Vinyl chloride vinyl acetate Acrylstyrene copolymer (# 400: Denki Kagaku Kogyo Co., Ltd.) 3 parts Polycarbonate resin (Z-300: Mitsubishi Gas Chemical Co., Inc.) 97 parts X-62-1212 ( Shin-Etsu Chemical Co., Ltd. 5 parts PL-50T (Shin-Etsu Chemical Co., Ltd.) 2 parts MEK / toluene = 1/1 500 parts On the other hand, the thermal transfer sheet which is the transfer source of the thermal transfer image-receiving sheet is as follows. Created.

That is, first, an ink composition for forming a dye layer having the following composition was prepared, and a 6 μm-thick polyethylene terephthalate film having a heat-treated back surface was applied so that the dry coating amount was 1.0 g / m ^2. Was coated with a wire bar and dried to obtain a thermal transfer sheet.

Ink composition for forming a dye layer Cyan dye represented by the following structural formula [1] 4 parts Polyvinyl butyral resin (ESLEC BX-1: Sekisui Chemical Co., Ltd.) 3 parts MEK / toluene = 1/1 53 parts

[0046]

[Chemical 1] The thermal transfer sheet thus formed and the dye image-receiving sheet of the present invention and the comparative example are superposed with their dye layers and dye image-receiving surfaces (receiving surfaces) facing each other, and the head is formed from the back surface of the thermal transfer sheet. Applied voltage 11.0 V, applied pulse width 16 msec. / Line to 1 msec. Step pattern that decreases sequentially every time, 6 line /
Recording was performed with a thermal head under the condition of mm (33.3 msec / line) to form a cyan image. Based on the formed image, the image printing state and the like were evaluated as the following peelability, color density and sharpness. The residual solvent when the dye receiving layer was coated on the base material sheet was also evaluated as an important evaluation item. The results are shown in Table 2 below. (1) Residual solvent Synthetic paper (Yupo FPG # 150: made by Oji Yuka) was used as the base material sheet, and one side thereof was coated with a coating liquid having the composition of the above-mentioned Examples and Comparative Examples by a wire bar to give 5 g. /
Apply at a ratio of m ² and dry quickly (drying condition is 13
The residual solvent was measured at 0 ° C. for 30 seconds. The measurement conditions are as follows.

Measuring equipment: GAS CHROMATOGRAPH GC-14
A (manufactured by Shimadzu) C-R4AX CHROMATOPAC (manufactured by Shimadzu) HEDADSPACE SAMPLE HSS-2B (manufactured by Shimadzu) Column: BX-10 Glass ID φ3 × 2.1 mm (manufactured by Shimadzu) Measuring condition: Vial temperature… 120 ° C time ... 15 minutes vaporizer temperature ... 130 ° C. column temperature ... 90 ° C. detector temperature ... 130 ° C. evaluation ^{criteria: ◎ ... 0~100mg / m 2 ○} ... 100~250mg / m 2 × ... to exceed 250 mg / m ² ( 2) Peelability The above thermal transfer sheet was lightly rubbed with synthetic paper (Yupo FPG # 150: made by Oji Yuka) 10 times, and then black solid printing was performed with VY-P1 (made by Hitachi).

Evaluation Criteria: O: No abnormal transfer X: Abnormal transfer (3) Color density The step with an applied pulse width of 3 msec / line was visually observed.

Evaluation Criteria: ◯: Cyan color can be confirmed ×: Cyan color cannot be confirmed (4) Sharpness (dot reproducibility in highlight part) Evaluation Criteria: ◯: Vivid and not sharp ×: Grainy Unclear

[0050]

[Table 2]

[0051]

From the above results, the effect of the present invention is clear. That is, in the thermal transfer image-receiving sheet of the present invention, the dye-receiving layer contains a thermoplastic resin having a number average molecular weight of 15,000 or less in an amount of 50 to 100% by weight of the resin constituting the dye-receiving layer, or a vinyl chloride-styrene copolymer. Since the content of the layer-constituting resin is 5 to 100% by weight, it is possible to form a recorded image having excellent releasability at the time of thermal transfer and excellent color density and sharpness.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a thermal transfer image-receiving sheet of the present invention.

[Explanation of symbols]

 1 ... Thermal transfer image receiving sheet 2 ... Substrate sheet 3 ... Dye receiving layer

Claims (4)

[Claims] 1. A base sheet, and a dye receiving layer provided on one surface of the base sheet, wherein the dye receiving layer comprises:
A thermal transfer image-receiving sheet comprising a thermoplastic resin having a number average molecular weight of 15,000 or less in an amount of 30 to 100% by weight of the resin constituting the dye receiving layer. 2. A base sheet and a dye receiving layer provided on one surface of the base sheet, wherein the dye receiving layer comprises:
A thermal transfer image-receiving sheet comprising a vinyl chloride-styrene copolymer in a proportion of 5 to 100% by weight of a resin constituting the dye receiving layer. 3. The reduced viscosity of the thermoplastic resin is 0.40.
The thermal transfer image-receiving sheet according to claim 1, which is a polyester resin having [η ^SP / C] or less. 4. The vinyl chloride-styrene copolymer is
Vinyl chloride acrylic styrene copolymer, vinyl chloride vinyl acetate acrylic styrene copolymer, vinyl chloride vinyl acetate styrene copolymer, vinyl chloride butyl acrylic styrene copolymer, vinyl chloride acrylic styrene copolymer, vinyl chloride methacrylic styrene copolymer It is characterized by being at least one or more selected from coalesce, vinyl chloride vinyl acetate methacryl styrene copolymer, vinyl chloride butyl acryl methacryl styrene copolymer, vinyl chloride vinyl butyl acryl methacryl styrene copolymer The thermal transfer image-receiving sheet according to claim 2.