JPS63222891A - Image-receiving sheet for thermal transfer recording - Google Patents

Abstract

PURPOSE:To enhance adhesion between an ink-receiving layer and a thermal transfer film and obtain excellent clear transferred images, by using a specified polyolefin synthetic resin film as a base, and providing a specified thick image- receiving layer on the surface of the base. CONSTITUTION:An image-receiving sheet comprises a base 12 constituted of a polyolefin synthetic resin film having a brightness according to JIS P-8123 of at least 90%, a center line average roughness Ra according to JIS B-0601 of 0.3-0.55mum and a compressibility under a stress of 32kg/cm<2> of 15-30%, and an image-receiving layer 11 having a thickness of 0.2-20mum is provided on the surface of the base 12. The compressible property of the base 12 enhances the adhesion between the image-receiving layer 11 as the surface layer and a transfer film 2 when the image-receiving sheet is used as one for thermal transfer recording, and even when the surface of the layer 11 is rugged, projected parts of the surface are pressed into the inside part of the image-receiving sheet 1, resulting in that excellent transferred images are obtained.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a receiving sheet for thermal transfer recording, and particularly to a receiving sheet for thermal transfer recording for color hard copies used in video printers, etc., which form characters and images on a receptor using electrical signals from a thermal head, etc. It is related to. [Prior Art] Conventionally, a transfer sheet having a transfer layer containing a heat-melting coloring material containing a pigment or a sublimable or vaporizable dye and a receiving sheet are superimposed, and the transfer sheet is heated to transfer the coloring material contained in the transfer layer. A thermal transfer method is known in which a pigment or dye is thermally melted, sublimated, or vaporized and transferred to a receiving sheet to form a pigment or dye image on the receiving sheet. Specifically, in a transfer type thermal recording method using a heat source controlled by an electric signal such as a thermal head, as shown in FIG. and a support 12 are placed on a drum 3.
and a heat source 4, and a color hard copy is obtained by transferring the coloring material of the layer 22 onto the image-receiving layer 11 in response to an electric signal. The image-receiving layer 11 differs depending on the content of the coloring material used, and in the case of a heat-melting coloring material containing pigments, it may be made of a polymer material such as polyacrylic or polyolefin material, or a polymeric material such as a polyacrylic material or a polyolefin material, or an inorganic filler such as activated clay mixed therein. In the case of a sublimable basic dye type coloring material, it consists of an activated clay (activated clay) layer, and in the case of a sublimable disperse dye type coloring material, it consists of a polymeric material layer such as polyester. In conventional receptors, the surface of the image-receiving layer 11 had unevenness of 5 to 15 .mu.m due to uneven thickness of the support or surface unevenness, and waviness of 20 gm by weight per 1 .mu.m. Although these irregularities or undulations can be improved to some extent by surface treatment using a supercalender, there is a limit to the improvement. For this reason. When the surface unevenness of the image-receiving layer 11 is 3 to 5 cm or more or the waviness is IOμ or more per 1 cm, the coloring material transferred from the coloring material layer 22 can produce image signals not only with heat-melting colorants but also with sublimation colorants. The transfer was not accurate, resulting in disturbances in image quality such as missing dots and missing dots, and giving a rough feel to the intermediate tones (Japanese Patent Application Laid-Open No. 59-214698). In addition, as the support 12, paper or inorganic fine powder can be used for
Synthetic paper made of stretched film of thermoplastic resin containing 50% by weight 2 (Special Publication No. 4B-40794), transparent polyethylene terephthalate film, or silica or carbonate on the surface of the transparent film to improve whiteness and ink receptivity. Coated synthetic paper coated with an inorganic compound such as calcium and a binder is used. Considering the after-use of the thermally transferred receiving sheet (copying, pencil writing, storage stability, etc.), synthetic resin film is preferable as the image receiving sheet for thermal transfer recording in terms of strength, dimensional stability, and dust-free property. However, transparent plastic film has low whiteness, lacks hiding properties, and has weak image contrast, making it difficult to decipher. Therefore, a coated synthetic resin film having an ink-receiving layer provided on the surface of a synthetic resin film containing inorganic fine powder or a transparent film having a high whiteness of 90% or more is preferable. However, with the latter coated synthetic resin film, it is necessary to apply a large amount of coating agent in order to obtain a degree of whiteness (85z or higher, preferably 90% or higher) that provides good image contrast. This is not only economically disadvantageous, but also causes problems such as continuous gradation and self-reflection during thermal transfer due to the receptor layer trapping on the ink sheet side and the support itself not having appropriate compressibility and being hard. There was a problem with the roughness caused by the omission. The former multilayer synthetic resin film, which is made of a stretched thermoplastic resin film containing fine inorganic powder, has good surface roughness and compressibility, and is used as an image-receiving sheet for thermal transfer recording. , excellent in terms of pencil writing properties, water resistance, etc.

[Problems to be solved by the invention]

Generally, to improve image quality, the surface is treated with a super calender to make it highly smooth. It is known to reduce the centerline average roughness of the surface after coating the image-receiving layer to IILm or less (Japanese Patent Application Laid-open No. 1398/1983), but high smoothness using a super calender etc. is only for a few gm to several weight percent. It is only possible to improve the unevenness of the layer, and since the surface layer becomes hard due to calendering, it is difficult to obtain good continuous gradation in the image.
There is still a feeling of roughness. Furthermore, even if the center line average roughness of the surface of the image receiving layer is less than 1 R as disclosed in the above-mentioned Japanese Patent Laid-Open No. 81-1398, the center line average roughness is 0.29 p- When the ink sheet is smoothed to less than ts, the ink transferability improves, but on the other hand, the blocking phenomenon between the ink sheet and the transfer paper becomes a problem. On the other hand, when the center line average roughness is 0.58 IL layer or more, good continuous gradation cannot be obtained, and a rough feeling due to white spots in the low to intermediate gradation range becomes a problem. In addition, even if the center line roughness is 0.3 to 0.55 gm, if the compressibility of the support is 20% or more, white spots will occur; If it exceeds this, problems arise such as a decrease in the density of the second and subsequent colors during multiple transfer and a sticking phenomenon with the ink sheet. The present invention was made in view of this problem, and provides a useful image-receiving sheet for thermal transfer recording. [Means for Solving the Problems] The present invention provides a transfer sheet having a color transfer layer made of a heat-melting coloring material containing a pigment or a color transfer layer containing a sublimable or vaporizable dye. Alternatively, in an image-receiving sheet for thermal transfer recording in which a support is provided with an image-receiving layer made of a resin composition having dyeability or a composition containing an inorganic filler therein, the image-receiving sheet conforms to JIS P [1123
The whiteness of the surface is 902 or higher, and the surface is JIS B-
The center line average roughness Ra measured with 0601 is 0.3 to 0.
A support is made of a polyolefin synthetic resin film which is 55x- and has a compressibility of 15 to 30% under a stress of 32 kg/cmz, and the surface of this support is
This is an image-receiving sheet for thermal transfer recording characterized by being provided with an image-receiving layer having a thickness of 20 IL. The support is a polyolefin synthetic resin film with a whiteness of 90x or more according to JIS P8123, for example, a polyolefin biaxially stretched film containing 0 to 45 weight 2 of inorganic fine powder is used as a base layer, and this base layer A polyolefin containing 8 to 65% by weight of inorganic fine powder on the surface of
The axially stretched film is made into a paper-like layer, and the average particle size is 1 on the surface.
It is a synthetic resin film with a multilayer structure in which the outermost surface layer is a polyolefin resin composition containing 5z or more of inorganic fine powder below the river layer and has a wall thickness of 0.2 to 2.5cm. The average roughness Ra is 0.3 to 0.55 as measured by JIS B-061, and the compression ratio (32 kg/c
(2) Compression amount when applying a load of 2) is 15 to 30X. As the polyolefin, polyethylene, polypropylene, ethylene/propylene copolymer, ethylene/vinyl acetate copolymer, poly(4-methylpentene-1), polystyrene, etc. can be used. The inorganic fine powder to be blended into polyolefin is 1.
Examples of the paper-like layer include calcium carbonate, calcined clay, diatomaceous earth, talc, titanium oxide, barium sulfate, aluminum sulfate, silica, etc. whose average particle size is less than the weight % IL layer. In particular, those having an average particle size of 3#Lm or less are preferable in order to set the surface roughness Ra in the range of 0.3 to 0.55 mm. Titanium oxide, barium sulfate, aluminum sulfate, silica, etc. can be used as the inorganic fine powder having an average particle size of 1 or less to be blended in the outermost surface layer. In addition to the outermost surface layer and the paper-like layer, the support of the present invention includes other layers,
In particular, it can include a base layer. As an example of a preferable support, a biaxially stretched film of the following composition (A) is used as a base layer, and a paper-like uniaxially stretched film of the following composition (B) is applied on the front and back surfaces of this base layer. A synthetic resin film having a structure in which a uniaxially stretched film of the surface layer of the composition (C) below is laminated to a paper-like layer on both sides or one side, with a cross-sectional view of an example shown in Fig. 1. show. (A) Base material layer composition (a) Polypropylene 50-950-95 weight Resin 0-30 weight 2 (C ) Inorganic fine powder 50-5ffiMB (
B) Paper-like layer composition (a) Polypropylene 35-925-92 weight 2 Resin selected from listyrene, high-density polyethylene, medium-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer 0-30 weight 2 ( c) Inorganic fine powder 8-65 weight 2 (
C) Outermost surface layer composition Polypropylene containing 5 weight X or more of inorganic fine powder. If a portion (50wt, 1% or less) of the polypropylene in the outermost surface layer is replaced with polystyrene or polyethylene, the gloss of the surface layer can be reduced. The synthetic resin film described in (a) is obtained by extruding the base layer composition of (^) into a sheet shape and stretching it in one direction at a temperature lower than the melting point of polypropylene. , coextruded compositions (B) and (C
) is laminated so that the paper-like layer composition (B) is in contact with the film (A), and then this laminated film is stretched in a direction perpendicular to the stretching direction at a temperature lower than the melting point of polypropylene. This is a synthetic resin film obtained by. T? ,, A molten film of the coextruded compositions (B) and (C) is laminated on one side of the film (A) that has been uniaxially stretched in the longitudinal direction so that the composition (B) is in contact with the film (A). , the other side of the film (A) is coated with the composition (
It may also be a multilayer synthetic resin film obtained by laminating the molten film of B) using another extruder and stretching the resulting laminate in the transverse direction. Figure 1 shows such a support. This is an example in which a receptive layer is coated on the surface. The inorganic fine powder blended into the base layer forms many fine pores (microvoids) inside the base layer film when the base layer is stretched in two wheels. The support of the present invention is compressible due to the large number of microvoids in the base layer and the paper-like layer, and by selecting the wall thickness of the multilayer structure of the support, the support can be compressed at a temperature of 23°C and a relative humidity of 50%.
When the surface is pressed under a stress of 32 kg/cmz in an atmosphere of Due to this compressibility, when used as an image-receiving sheet for thermal transfer recording, the adhesion between the surface image-receiving layer and the transfer sheet is reduced, and even if the surface of the image-receiving layer is uneven, the projections are As a result of being pushed inside the receiving sheet, an excellent transferred image is obtained, and
It has the effect of preventing a decrease in the amount of transfer during multiple transfer. The base layer (A) of this synthetic resin stretched film contributes to increasing the strength of the synthetic resin film, and the paper-like layer (B) hides the personnel layer (A) and gives the synthetic resin film a station-front texture. . The first surface layer (C) has a roughness Ra of the outermost surface layer of the synthetic resin film in the range of 0.3 to 0.554 m, and has a higher transfer ink receptivity than when no outermost surface layer is provided. This makes it possible to obtain high-quality images with excellent gradation and less loss of density during multiple transfer. As the image-receiving layer-forming material, acrylic resins and polyolefin-based polymeric materials are used, as they have good transferability to heat-melting coloring materials containing pigments. Also,
As the resin exhibiting dyeability with sublimable or vaporizable dyes, polymeric materials such as polyester and materials such as activated clay are used. Among them, acrylic resin is good. Specifically, a), an acrylic copolymer resin b), a mixture of the following 1) to 3) 1) an acrylic copolymer resin 2) an amine compound having amine 7, (3) an epoxy compound c), A mixture of a) or b) above and an inorganic or organic filler is used. Examples of monomers for acrylic copolymer resins include dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dibutylaminoethyl acrylate,
Examples include dimethylaminoethyl acrylamide, diethylaminoethyl methacrylamide, dimethylaminoethyl methacrylamide, and the like. Other vinyl monomers for acrylic copolymer resins include:
Examples include styrene, methyl methacrylate, ethyl acrylate, n-butyl acrylate, tert-butyl acrylate, ethyl methacrylate, vinyl chloride, ethylene, acrylic acid, methacrylic acid, itaconic acid, acrylonitrile, and methacrylamide. Examples of the amine compound of component b) include polyalkylene polyamines such as diethylenetriamine and triethylenetetramine, and polyethyleneimine. Ethylene urea, shrimp glolhydrin adduct of polyamine polyamide (trade name: Kaimen-5571 (trade name: Dick Bercules Co., Ltd., AF-wt% 0 of Aurayo Forestry Chemical Industry Co., Ltd.), aromatic glycidyl ether of polyamine polyamide, or Ester adducts (trade names are Sanmide 352, 351 and
75, Shell Kagaku Ebicure 3255), etc. can be used. In addition, as the epoxy compound of component b) above, diglycidyl ether of bisphenol A, bisphenol F
diglycidyl ether, phthalic acid diglycidyl ester, polypropylene glycol diglycidyl ether,
Trimethylolpropane triglycidyl ether and the like can be used. The inorganic filler for c) r& above has an average particle size of 0.
Synthetic silica such as white carbon with 5 layers or less, )Z
Mt calcium, clay, talc, aluminum sulfate,
Inorganic pigments such as titanium dioxide and zinc oxide can be used, preferably synthetic silica such as white carbon, and light calcium carbonate having an average particle size of 0.2 pm or less. Various polymer fine particles are used as the organic filler, but the particle diameter is preferably less than the lθμ layer.
Examples of polymers constituting the organic filler include methyl cellulose, ethyl cellulose, polystyrene, polyurethane, urea/formalin resin, melamine resin, phenol resin, iso (or diiso) butylene/maleic anhydride copolymer, styrene/maleic anhydride. copolymer,
Polyvinyl acetate, polyvinyl chloride, vinyl chloride/vinyl acetate copolymer, polyester, polyacrylic ester, polymethacrylic ester, styrene/butadiene/
Examples include acrylic copolymers. These fillers are usually used in a ratio of 3011 or less. In particular, inorganic fillers can be treated with nonionic, cationic, or amphoteric activators such as funnel oil, sodium dodecyl sulfate, organic amines, metal soap sodium ligninsulfonate, etc., so that they can become wet with the ink on the transfer paper 2. It has improved properties and can be used suitably. Next, the thickness of each layer will be described. The thickness of the multilayer support is 40 to 800 layers, preferably 60 to 300 layers. The base layer (A) accounts for 40% or more of the thickness of the synthetic resin film. The thickness of the outermost surface layer (G) is 0.2 to 2.5 p. If the thickness is less than 0.2μ, the center line average roughness of the outermost surface layer will be less than 0.5θ, making it impossible to obtain good continuous gradation, resulting in a rough feeling at low to intermediate gradations. No improvement effect can be expected0
The particle size of the inorganic fine powder of the paper-like layer (B) is usually 3 or less final layers,
Preferably it is a 0.1-2w layer. In addition, the outermost surface layer (
When the wall thickness of C) exceeds 2.5 gs+, the center line roughness of the outermost surface layer becomes 0.21 Lm or less, and peeling between the transfer sheet and the image receiving sheet is poor, causing a sticking phenomenon.
This may cause the image to become unclear, such as missing or missing beats. The thickness of the paper-like layer (B) is such that the support 12 has sufficient whiteness (9
oz or more) 5 to 200 AL11 strength, and when the support is provided with a base layer (A), usually 5 to 8
It is 0JLs. The image-receiving layer 11 is the outermost surface layer (C) of the support 12.
It is formed by coating on the side and drying. For coating, a conventional coating machine such as a blade coater, air knife coater, roll coater, or bar coater, or a size press or a gate roll device is used. The wall thickness of the image-receiving layer 11 is from 0.2 to 20% by weight, preferably from 0.5 to 20% by weight. If necessary, the receiving sheet may be further calendered.
The surface may also be made smoother. [Example] The supports used in the following examples and comparative examples were manufactured according to the following manufacturing examples. Production Example 1 A mixture of 79 tons of polypropylene with a melt index (Ml) of 0.8 and 2 tons of high-density polyethylene was added with calcium carbonate 16T (%) with an average particle size of 1.5.
Composition A containing the following was kneaded in an extruder set at 270°C, extruded into a sheet, and cooled in a cooling device to obtain a non-stretched sheet. This sheet was heated to 140°C and then stretched 5 times in the machine direction. Polypropylene 45a with Ml of 4.0! Composition C, which is a mixture of jtx and calcium carbonate 551 with an average particle size of 1.0 body layers, is composed of polypropylene 55 with an Ml of 4.0 weight 2
and Composition B, which is a mixture of 45 parts and 2 parts of calcium carbonate with an average particle size of 1.5 l, are melt-kneaded in separate extruders, laminated in a gooey, and coextruded to form a sheet. Composition C was laminated on one side of the double-stretched sheet so that it was on the outside, and Composition B was melt-kneaded and extruded on the other side of the five-times stretched sheet using a separate extruder. After cooling this laminate to 60°C, it was reheated to 182°C, stretched 7.5 times in the transverse direction using a tenter, subjected to 7-two rings at 185°C, cooled to 60°C, and the edges were slit. and 4 layers (C/B
/A/B, thickness: 2/33/70/35 final layer) A synthetic resin film was obtained. The Beck index of the outermost surface (C) of this synthetic resin film is 800, the Ra measured by a surface roughness meter is 0.45, the compression rate is 24$, and the whiteness as a support is 95.
It was $8. Production Example 2 Composition A was prepared by blending calcium carbonate 16[I] with an average particle size of 1.5 into a mixture of 79% by weight of polypropylene with a melt index (Ml) of 0.8 and 2 amounts of high-density polyethylene Sfi. The mixture was kneaded in an extruder set at 270°C, extruded into a sheet, and cooled in a cooling device to obtain a non-stretched sheet. This sheet was heated to 140°C and then stretched 5 times in the machine direction. Composition C is a mixture of polypropylene eoi i $ with an Ml of 4.0 and 2flFt $ of calcium carbonate with an average particle size of 1.5, and 55% by weight of polypropylene with an Ml of 4.0 and an average particle size of 1.5% by weight. 51L+m of composition B mixed with 45% by weight of calcium carbonate were melt-kneaded in separate extruders, laminated and co-extruded in a gou, and a sheet was prepared with composition C on one side of the 5 times stretched sheet. The sheets were laminated so that they were on the outside, and on the opposite side of the 5-fold stretched sheet, composition B was melt-kneaded using another extruder and extruded and laminated. 80% of this laminate
After cooling to 182°C, it was reheated to 182°C, stretched 7.5 times in the transverse direction with a tenter, annealed at IEi 5°C, cooled to 60°C, and the edges were slit to form 4 layers (
C/B/A/B, wall thickness: 2/33/70/35 h
A synthetic resin film with a structure of 1) was obtained. The Beck index of the outermost surface C of this synthetic resin film is 15
00, Ra measured by surface roughness meter is 0.5 gm,
The compression ratio was 22z, and the whiteness as a support was 96.02. Production Example 3 As the composition of the outermost surface layer C, the same polypropylene 95 was used instead of composition C, which was a mixture of 45% by weight of polypropylene with an Ml of 4.0 and 55% by weight of calcium carbonate with an average particle size of 1 tile layer. Ti (wt%) and average particle size of 0.254 ts (
A synthetic resin film having the physical properties shown in Table 1 was obtained in the same manner as in Production Example 1 except that a mixture with 5% by weight of h was used. Production Example 4 As the composition of the outer surface layer C, polypropylene with an MI of 4.0 was used, and 4 layers (C/B/A/B, wall thickness: weight %) were used.
/25/75/35) A synthetic resin film having the physical properties shown in Table 1 was obtained in the same manner as in Production Example 1 except that the structure was changed. Production Example 5 Calcium carbonate 16 tons with an average particle size of 1.5 gta was added to a mixture of polypropylene 79 weight 2 with a melt index (MI) of 0.8 and high density polyethylene 5 weight % with an average particle size of 1.5 gta.
Composition A containing the following was kneaded in an extruder set at 270°C, extruded into a sheet, and cooled in a cooling device to obtain a non-stretched sheet. This sheet was heated to 145°C and then stretched 5 times in the machine direction. Polypropylene 5511 with an XI of 4.0 and an average particle size of
Composition B, which is a mixture of 1.5 p of calcium carbonate 45 wt. After cooling to 60°C, +Ir to 172°C
Heated and stretched 7.5 times in the transverse direction using a tenter, 175
7-knealing treatment at ℃, cooled to 60℃, and slit the ears to create a 3-layer structure (B/A/B, wall thickness: 35/70
/35 p-ta) and the physical properties shown in Table 1 was obtained. In addition, various physical properties were measured by the following methods. Whiteness: According to JIS P8123. Berakumo smoothness: Surface smoothness measured according to JIS P-8120 (Beck's finger a) Compression rate: Compression when a load of 32 kg/cmz was applied, and was determined by the following formula. Centerline average roughness: Measured using a Koita Research Institute three-dimensional roughness measuring machine (ST3AK) and an analyzer Model 5PA-11 (trade name) to determine the centerline average roughness. Monochromatic transferability: An image receiving sheet and a thermal transfer film (manufactured by Mitsubishi Paper Mills, trade name: GoTF Cyan) were superimposed, and a hot plate was heated to 6.
Heat gradient at 3°C intervals from 0°C, 0.5kg/cm2
A thermal transfer image was obtained by heating for 5 seconds at a pressure of . The obtained image was measured with a Macbeth densitometer and evaluated on the following five scales based on the density and degree of self-bleeding. 5: Very good 4: Good 3: No problems in practical use 2: Problems in practical use l: Poor multi-transferability: The magenta color of the image receiving sheet and the thermal transfer film is blurred.
The heating plate was heated to 79°C for all five types of sheets, and the weight was 0.5 kg.
/cm 2 pressure for 5 seconds to perform the transfer, and then the above-mentioned monochrome transfer test was conducted using a cyan thermal transfer film so as to overlap the image of the first color. Evaluation was performed in the same manner as for monochrome transfer. Example 1 The outermost surface layer of the synthetic resin film support obtained in Production Example 1 (
A coating material having the following composition was applied to the G) side at a solid content of approximately Ig/2, and dried at 80°C for 30 seconds to form a support.
An image-receiving sheet having an image-receiving layer (thickness of about 1 leu) provided on the top was obtained. Various evaluations are shown in Table 1. Coating agent formulation: l) Cationic acrylic copolymer emulsion (solid content 50%) 200 parts by weight 2) Polyethyleneimine (manufactured by Nippon Shokubai Chemical Co., Ltd., trade name: Evomino 5P-018) 8 parts 3) Bisphenol A
Diglycidyl ether (Epicote 828J (trade name, epoxy equivalent: 1B) from Yuka Shell Epoxy Chemical ■
? )+2020 weight Examples 2 to 3 and Comparative Examples 1 to 2 The same procedure as in Example 1 was used except that the synthetic resin film obtained in Production Examples 2 to 5 was used instead of the synthetic resin film in Example 1 as a support. An image receiving sheet was obtained. The evaluation result is the first
Shown in the table. Comparative Example 3 As a support, instead of the synthetic resin film of Production Example 1,
An image receiving sheet was obtained in the same manner as in Example 1, except that coated paper (OK coat, 81.4 g/.2) was used. The evaluation results are shown in Table @1. [Effects] The image-receiving sheet for thermal transfer recording of the present invention has a compression type due to the large number of microvoids contained in the support, which improves the adhesion between the ink-receiving layer on the surface layer and the thermal transfer film, and the image-receiving sheet for thermal transfer recording Even if there are convex portions on the surface, they are pushed inside during transfer, and the resulting transferred image has excellent clarity. It also has the effect of preventing a decrease in the amount of transfer during multiple transfer.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of an image-receiving sheet for thermal transfer recording of the present invention, and FIG. 2 is a front view of a thermal transfer recording apparatus.

Claims (7)

[Claims] (1) Resin compositions or resin compositions having transfer fixing or dyeing properties for transfer sheets having a color transfer layer made of a heat-melting coloring material containing a pigment or a color transfer layer containing a sublimable or vaporizable dye. An image-receiving sheet for thermal transfer recording in which a support is provided with an image-receiving layer made of a composition containing an inorganic filler. A polyolefin synthetic resin film having a measured center line average roughness Ra of 0.3 to 0.55 μm and a compressibility of 15 to 30% under a stress of 32 kg/cm^2 is used as a support. An image-receiving sheet for thermal transfer recording, characterized in that an image-receiving layer with a thickness of 0.2 to 20 μm is provided on the surface of the body. (2) The synthetic resin film of the support is a synthetic resin film with a multilayer structure, including a paper-like layer made of a polyolefin film containing 8 to 65% by weight of inorganic fine powder, and a paper-like layer having an average particle size of 1 μm or less on its surface. The image-receiving sheet for thermal transfer recording according to claim 1, which is a synthetic resin film having a structure in which a polyolefin film containing 5% by weight or more of inorganic fine powder is provided as the outermost surface layer. (3) The image-receiving sheet for thermal transfer recording according to claim 2, which is an oriented film obtained by simultaneously stretching the paper-like layer and the outermost surface layer in a uniaxial direction. (4) Paper-like layers are multilayered on both sides of the base material layer,
An image-receiving sheet for thermal transfer recording according to claim 2 or 3. (5) The image-receiving sheet for thermal transfer recording according to claim 4, wherein the base layer is a biaxially stretched polyolefin film containing 0 to 45% by weight of inorganic fine powder. (6) The thickness of the outermost surface layer of the support is 0.2 to 2.5 μm
An image-receiving sheet for thermal transfer recording according to claim 2 or 3, which is: (7) The image-receiving sheet for thermal transfer recording according to any one of claims 1 to 6, wherein the polyolefin is polypropylene.