JPH0872417A - Thermal transfer material to be recorded and production thereof - Google Patents

Abstract

PURPOSE: To provide a thermal transfer material to be recorded not generating the missing transfer of a highlight part, excellent in gradation reproducibility and obtaining a beautiful recording image of high density high in image glossiness by providing a dye receiving layer excellent in surface smoothness and the dyeing properties of a sublimable dye on a support. CONSTITUTION: A dye receiving layer 3 composed of a compsn. prepared by compounding a synthetic resin and a fusion preventing agent such as silicone oil or a silicone graft polymer is provided on the release layer of a release film wherein the release layer is formed on a transparent sheet support and the dye receiving layer 3 and base paper 1 are passed through the nip between two heated and pressed rolls through a thermal adhesive layer 2 to be integrated and the release film is peeled and removed to obtain a thermal transfer material to be recorded excellent in surface smoothness wherein the surface shape of the release layer of the release film is transferred to the surface of the dye receiving layer 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to sublimation transfer of a heat sublimable dye in a color material layer from a color material sheet provided with a color material layer containing a heat sublimable dye by heating with a thermal head or the like. The present invention relates to a thermal transfer type recording material capable of obtaining a recorded image by a method and a method for producing the same.

[0002]

2. Description of the Related Art A thermal transfer type recording material using a sublimable dye can obtain an image quality close to that of a printed matter having particularly excellent gradation in the thermal transfer recording system. Conventionally, as a thermal transfer recording material, a binder such as a thermoplastic butyral resin is used as a binder, and a coating liquid in which fine powder silica, calcium carbonate, etc. are mixed and dispersed is applied on a base material such as high-quality paper and dried to receive a dye. Had formed layers.

However, when a dye-receiving layer is formed on a substrate having a low surface smoothness such as high-quality paper, transfer defects occur especially in highlight areas and the like, and the recorded matter is excellent in gradation reproducibility and is beautiful. Can't get In particular, in an image with many highlight portions, the transfer omission is a fatal defect. Further, the thermal transfer type recording material using a substrate having a low surface smoothness is inferior in adhesiveness when image recording is performed by superimposing the color material layer surface of the color material sheet and the receiving layer surface of the thermal transfer type recording material, There is a problem that dyeing of the sublimation dye on the dye receiving layer is difficult to occur and a high-density recorded image cannot be obtained.

To improve these problems, various improvements have been conventionally made.

For example, JP-A-62-220395 discloses a method for improving the surface smoothness of the surface of a dye-receiving layer after the dye-receiving layer is once formed on a temporary carrier different from the card substrate. Again, cards using a transfer system for transferring to a card substrate have been proposed.

In this proposal, as a temporary carrier,
An anchor coat layer is applied to cellulose fiber paper or synthetic paper, or a releasing silicone layer is applied to a plastic sheet, and a dye receiving layer is formed thereon. When the resin layer is formed on the silicone layer, the cissing phenomenon of the resin layer due to the low wetting tension of silicone is likely to occur, and it is difficult to form a uniform resin layer. Therefore, if a viscosity increasing liquid is used to eliminate the cissing phenomenon, the leveling effect of the coating liquid is impaired, and a coated product with good surface properties cannot be obtained.

In addition, when the barrier property (filling) of the anchor coat layer and the curing property of the silicone layer are incomplete, the peeling force at the interface between the silicone layer and the resin layer fluctuates greatly, causing peeling curl and recording. There is a problem that the body is easily damaged.

Further, in the adhesive layer, the resin layer induces thermal deformation (dissolution and softening of the resin layer) due to heat from the thermal head at the time of image recording, and image quality (high It is easy to cause a transfer omission in the light section and a decrease in image density, image glossiness, and gradation reproducibility. Therefore, it is necessary to specify the thermal characteristic value of the resin, but it is very difficult to obtain a card having insufficient surface property and lacking the thermal characteristic value in the proposal.

[0009]

The present application has been made in order to improve the problems as described above. The object is to provide a heat transfer type recording material capable of obtaining a beautiful recorded image with high image quality by improving the surface smoothness of the surface of the dye receiving layer and combining the dye receiving layer with excellent dyeing property. .

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to include a synthetic resin and an anti-fusing agent on a release layer of a release film formed by forming a release layer on a transparent sheet support. After the dye-receiving layer is provided, the dye-receiving layer surface and the base paper are integrated with each other by passing the two heat-pressurized rolls through the heat-sensitive adhesive layer having heat adhesiveness. By peeling and removing the release film, the shape of the release layer surface is faithfully transferred to the receiving layer surface, and a thermal transfer recording material having excellent surface smoothness is prepared.

The present invention will be described in more detail below.

Examples of the transparent sheet support used in the release film of the present invention include plastic sheets such as polyethylene terephthalate, triacetate and polycarbonate. In particular, a biaxially stretched polyethylene terephthalate sheet is preferable because it is excellent in strength, heat resistance, dimensional stability and the like.

The thickness of the transparent sheet support is not particularly limited, but 12 to 150 μm is suitable.

The release layer resin formed on the transparent sheet support is selected in consideration of the adhesiveness with the transparent sheet support, the release property with the dye receiving layer, the coating suitability and the like. It is preferable to use a release agent consisting of an acrylic / stearic acid copolymer and a polyisocyanate resin.

The thickness of the release layer formed on the transparent sheet support is preferably 0.1 to 7.0 μm, particularly preferably 0.5 to 5.0 μm.

The release layer of the present invention comprises inorganic pigments such as silicon dioxide, calcium carbonate and alumina having a particle size of 0.01 to 5 μm, polyethylene, prepropylene, and the like, if necessary.
It is also possible to matte (roughen) with plastic powder such as polyethylene terephthalate, polystyrene, polycarbonate, ethyl acrylate resin, methacrylic acid resin, and fine powder such as starch and cellulose. It can be controlled by the type of matting agent, the particle size and the amount added.

In addition, the required characteristics of the dye-receiving layer of the thermal transfer recording material of the present invention are as follows: the coloring material layer surface of the coloring material sheet and the dye receiving layer of the thermal transfer recording material are superposed to form a coloring material sheet. In order to efficiently sublimate the dye in the coloring material layer and heat it to the dye receiving layer from the back side of the thermal head, the dyeability of the sublimation dye and the adhesion between the coloring material layer surface and the dye receiving layer during image recording Properties and anti-fusion properties.

As such a dye receiving layer, vinyl chloride /
Vinyl acetate / maleic anhydride terpolymer, acrylated alkyd polyol resin, alkyd resin, polyisocyanate resin, acrylic resin, etc. A methyl styryl-modified silicone oil, an acrylic / silicone graft polymer, a polyurethane / silicone graft polymer, or a self-crosslinking silicone-modified acrylic resin. And the softening point of the formed coating film is 45 to 70 ° C. The softening point of the dye receiving layer is 4
If the temperature is lower than 5 ° C., a fusion phenomenon is likely to occur between the colorant layer surface and the dye receiving layer surface during image recording, and the softening point is 70.
If the temperature exceeds ℃, the dyeability of the sublimation dye to the dye receiving layer will be reduced.

The amount of the anti-fusing agent to be mixed with the resin is preferably 0.1 to 25 parts, more preferably 0.5 to 10 parts, based on 100 parts of the resin solid amount.

The softening point is Thermomechan.
iCal Analyzer TMA-2940 (Du
It is displayed by the softening temperature measured in Pont.

In the dye receiving layer of the present invention, if necessary, silicon dioxide having a particle size of 0.01 to 2 μm, calcium carbonate,
It is possible to enhance the fusion preventing effect by adding an inorganic pigment such as talc, clay or titanium oxide, or a plastic powder such as polyethylene, benzoguanamine, acryl, epoxy or polystyrene. It is also possible to add various additives such as an antistatic agent, an antifoaming agent, and a leveling agent (improving wettability).

The thickness of the dye receiving layer is 0.4 to 4.0 μm, preferably 1.0 to 3.0 μm. When the thickness of the dye-receiving layer is more than 4 μm, the dyeing density of the sublimation dye on the dye-receiving layer is reduced, so that the image density of the recorded image is lowered and the sharpness of the image is deteriorated due to the reduction of glossiness.

The thickness of the dye receiving layer is 0.4 μm.
If it is less than the above range, dyeing of the sublimation dye onto the dye receiving layer is not sufficiently performed, and the image density is low, which is not preferable.

The surface smoothness of the surface of the dye-receiving layer of the heat transfer type recording material of the present invention easily affects the quality of the recorded image, has a high smoothness of Oken type of 8000 seconds or more, and has a three-dimensional surface roughness SRa. (Center surface average roughness) is 0.3 or less. Particularly preferably, the smoothness is 10,000 seconds or more and the surface roughness S is
Ra is 0.2 or less. If the smoothness is less than 8000 seconds,
Alternatively, when the surface roughness SRa is more than 0.3, the image density of the recorded image is low and transfer defects in the highlight portion are likely to occur, resulting in a recorded image with poor gradation reproducibility, which is not preferable.

As the support used for the base paper of the thermal transfer recording material of the present invention, there are high-quality paper, coated paper, art paper, synthetic paper, cast paper and the like which are excellent in adhesion to the thermal head and heat storage characteristics. It can be used.

The performance required of the heat-sensitive adhesive layer for integrating the dye-receiving layer surface of the laminate formed by forming the dye-receiving layer on the release film and the base paper by heat-sensitive adhesion is the same as that of the base paper. It has excellent heat-sensitive adhesiveness with the dye-receiving layer, fills irregularities on the base paper surface, and can faithfully transfer the shape of the release layer surface to the dye-receiving layer surface, and the heat-sensitive adhesive layer itself is not dyed during image recording. Sublimation dye is intensively dyed on the dye receiving layer and has a cushioning property to improve the adhesion between the color material layer surface and the dye receiving layer surface, and the surface of the dye receiving layer surface is smoothed by the heat from the thermal head. That is, it has a thermal characteristic value that does not deteriorate the property.

As the resin for the heat-sensitive adhesive layer, polyester resin, self-emulsifying polyolefin resin, colloidal silica composite acrylic emulsion, low molecular weight polyolefin resin, acrylic resin, ethylene / ethyl acrylate copolymer, ethylene / acrylic Ternary copolymer of acid copolymer, ethylene / methacrylic acid copolymer, ethylene / vinyl acetate copolymer, ethylene / methyl methacrylate copolymer, ionomer resin, vinyl acetate resin, ethylene / ethyl acrylate / maleic anhydride It is composed of a single resin or a mixture of a plurality of resins appropriately selected from coalesce, thermoplastic elastomer, and block type isocyanate resin, and the softening point of the formed coating film is 50 to 80 ° C.

When the softening point is less than 50 ° C., the synthetic resin layer is deformed by the heat from the thermal head during image recording, the flatness of the surface of the dye receiving layer is lowered, and the sublimation dye is dyed on the synthetic resin layer. Since the retentivity is increased, the gradation reproducibility is poor, and the image density and image gloss are low, and a beautiful recorded image cannot be obtained. On the other hand, when the softening point is higher than 80 ° C., the heat-sensitive adhesiveness to the base paper is inferior, so that the surface smoothness of the dye receiving layer surface is deteriorated.

In the heat-sensitive adhesive layer of the present invention, if necessary, an inorganic pigment having a particle size of 0.01 to 2 μm, an inorganic pigment such as silicon dioxide or titanium oxide, or a plastic powder such as polyethylene, benzoguanamine, acrylic, or the like is added to prevent blocking. It is also possible to add various additives such as leveling agents and defoaming agents.

The thickness of the heat-sensitive adhesive layer of the present invention is 5.0-8.
0.0 μm is preferable, and particularly preferably 7.0 to 6
It is 0.0 μm.

The softening point is Thermomechan.
iCal Analyzer TMA-2940 (Du
It is displayed by the softening temperature measured in Pont.

The thermal transfer recording material of the present invention can be manufactured through the following steps.

A dye receiving layer is formed on the release layer of a release film formed by forming a release layer on a transparent sheet support, and the surface of the dye receiving layer and the base paper are heat-adhesive with heat adhesiveness. By passing between two rolls heated and pressed through the agent layer to integrate them, the release film is peeled off from the interface between the receiving layer surface and the release layer surface of the release film. A thermal transfer recording material having a highly smooth dye receiving layer surface can be obtained.

[0034]

According to the present invention, a transparent sheet support is provided with a dye receiving layer having excellent surface smoothness on the surface of the dye receiving layer and excellent dyeability of sublimation dye. It is possible to obtain a thermal transfer recording material which is excellent in gradation reproducibility, and which is excellent in surface smoothness for obtaining a high density, beautiful and highly clear recorded image.

[0035]

EXAMPLES Next, the present invention will be described in more detail by way of examples, which should not be construed as limiting the invention.

FIG. 1 is a sectional view of the thermal transfer recording material of the present invention.

In the following examples, all compounding amounts (parts) are parts by weight.

Example 1 A solution having the following composition was applied to one surface of a transparent polyethylene terephthalate support having a thickness of 50 μm and dried to form a release layer having a thickness of 3 μm to obtain a release film.

Release agent [Hitachi Chemical Co., Ltd., Tesfine 322] 25 parts Curing agent [Kanto Chemical Co., Ltd., paratoluene sulfonic acid] 5 parts Matting agent [Mizusawa Chemical Co., Ltd., Mizuka Seal SK7 ( Particle size 1.5 μm)] 5 parts Toluene 25 parts Ethyl acetate 25 parts Methyl ethyl ketone 15 parts Next, a solution having the following composition adjusted so that the softening point of the dry coating film is 46 ° C. is applied onto this release layer and dried. Thickness 2μ
m dye receiving layer was obtained.

Acrylated alkyd polyol resin [Soken Chemical Co., Ltd., Thermolac HV70M] 9 parts Curing agent [Takeda Pharmaceutical Co., Ltd., Takenate D110N] 6 parts Titanium oxide [Furukawa Kikai Co., Ltd. FA-55W] 4 parts Silicone oil [Shin-Etsu Chemical Co., Ltd., KF-410] 1 part Antistatic agent [Yoshimura Oil Chemicals Co., Ltd., ELEK PS-909] 2 parts Toluene 25 parts Ethyl acetate 25 parts Methyl ethyl ketone 20 parts Dimethylformamide 8 parts Then, a solution having the following composition adjusted so that the dry coating film had a softening point of 60 ° C. was applied onto the dye receiving layer and dried to obtain a heat-sensitive adhesive layer having a thickness of 20 μm.

Self-emulsifying type polyolefin [Sumitomo Seika Chemicals Co., Ltd., Saixen L] 90 parts Silica [Mizusawa Chemical Industry Co., Ltd., Mizuka Seal SK7] 2 parts Water 4 parts Methanol 4 parts Next, heat-treated on one side On the surface of the polyethylene terephthalate sheet having a thickness of 9 μm, which is opposite to the heat-treated surface, three kinds of coloring material layer composition liquids having the following compositions are prepared, and then dried to obtain a thickness of 1.5 μm by a gravure coater. Solid printing of 3 colors, red, blue 3
Color material sheets of various types were obtained.

Disperse dye [Nippon Kayaku Co., Ltd., Kayaset Yellow AG] 3 parts Cellulose [Eastman Chemical Company, CAP482-0.5] 3 parts Toluene 47 parts Methyl ethyl ketone 47 parts * Other 2 colors disperse dye Kayaset Red B and Kayaset Blue FR (both
Nippon Kayaku Co., Ltd. Next, art paper (127.9 g / m)
2) and the above-mentioned transfer sheet are heated at a temperature of 14 by a thermal laminating machine.
0 (° C), speed 20 (m / min), pressure 7.0 (Kg
/ Cm2), the two rolls heated and pressurized are passed to integrate them, and then the release film is peeled off at the interface between the dye receiving layer surface and the release layer surface to perform thermal transfer recording. Got the material.

Next, True Print 2200
(Nihon Victor Co., Ltd., resolution 300 DPI, recording speed 7 mm / sec), the color material layer surface of the color material sheet and the dye receiving layer surface of the thermal transfer recording material are superposed, and the heat treatment surface of the color material sheet is subjected to thermal treatment. The head was heated to obtain a recorded image.

Example 2 A vinyl chloride / vinyl acetate / styrene maleic anhydride terpolymer [Denkalac # 31] of Denki Kagaku Co., Ltd. was used as a resin for the dye receiving layer, and a curing agent ( A dye receiving layer having a softening point of the dry coating film of 65 ° C. and a thickness of 2 μm after coating and drying was obtained in the same manner as in Example 1 except that Takenate D110N) was omitted.

Example 3 The dry coating film had a softening point of 78 in the same manner as in Example 1 except that a thermoplastic elastomer (Chemipearl A100, Mitsui Petrochemical Co., Ltd.) was used as the resin for the heat-sensitive adhesive. A 20 μm thick heat-sensitive adhesive layer after coating and drying at 0 ° C. was obtained.

Comparative Example 1 Vinylidene chloride resin [Kureha Chemical Co., Ltd., Crecron SO] was used as the resin for the dye receiving layer.
A) was used and the curing agent (Takenate D110N) was omitted, and the softening point of the dry coating film was 43 ° C. in the same manner as in Example 1 to form a dye receiving layer having a thickness of 2 μm after coating and drying. A heat transfer type recording material was obtained.

(Comparative Example 2) As a resin for the dye receiving layer, an acrylic resin [Acrydic CL1185, Dainippon Ink and Chemicals, Inc.] was used, and a curing agent (Takenate D1) was used.
In the same manner as in Example 1 except that 10 N) was deleted, a dye receiving layer having a softening point of 75 ° C. and a thickness of 2 μm after coating and drying was formed to obtain a thermal transfer recording material.

(Comparative Example 3) As a resin for heat-sensitive adhesive, a polyester resin (Unitika Co., Ltd., Elitel UE32)
In the same manner as in Example 1 except that 10) was used, a dry coating film had a softening point of 46 ° C. and a heat-sensitive adhesive layer having a thickness of 20 μm after coating and drying was formed to obtain a thermal transfer recording material. .

Comparative Example 4 As a resin for heat-sensitive adhesive, a polyester resin (Unitika Co., Ltd., Elitel UE36)
90) was used, and the dry coating film obtained in the same manner as in Example 1 had a softening point of 83 ° C. and a heat-sensitive adhesive layer having a thickness of 20 μm after coating and drying was formed to obtain a thermal transfer recording material. .

(Comparative Example 5) Lamination conditions for integrating the laminate obtained in Example 1 with a heat laminating machine on a base paper via a heat-sensitive adhesive layer were as follows: temperature 100 ° C, speed 30 (m / m). m
in) and the pressure was changed to 4 (Kg / cm 2) to prepare a thermal transfer recording material in the same manner as in Example-1.

Comparative Example 6 A dye-receiving layer was prepared in the same manner as in Example 1 except that the thickness of the dye-receiving layer of Example-1 after drying was 0.3 μm. Got

(Comparative Example 7) A dye-receiving layer was formed in the same manner as in Example 1 except that the thickness of the dye-receiving layer of Example 1 after drying was 4.2 μm, and a thermal transfer recording material was prepared. Obtained.

(Comparative Example 8) As the release agent layer of Example 1,
A thermal transfer recording material was obtained in the same manner as in Example 1 except that the release agent and the curing agent were changed and the matting agent was omitted as in the following formulation to form a release film.

Release agent [Shin-Etsu Chemical Co., Ltd., KS772] 3.0 parts Curing agent [Shin-Etsu Chemical Co., PL3] 0.3 parts Toluene 60.0 parts Ethyl acetate 25.0 parts Methyl ethyl ketone 11.7 parts The main evaluation results of the thermal transfer recording materials obtained in Examples 1 to 3 and Comparative Examples 1 to 8 are shown below. Tables 1 and 2 show the results of detailed evaluations regarding the suitability for thermal lamination, the surface state of the dye receiving layer and the image characteristics.

[0055]

[Table 1]

[Table 2] Remarks * 1 The degree of adhesion between the base paper and the heat-sensitive adhesive layer was ranked and evaluated. ○ means good, and × means bad.

* 2 The degree of air bubbles generated on the surface of the receiving layer due to hot laminating was rank evaluated. No indicates that no bubbles are generated, and Yes indicates that bubbles are generated.

* 3 The smoothness indicates the value measured by the Oken high smoothness meter of the receiving layer surface, and the surface roughness (SRa) is the
The measurement values by a three-dimensional surface roughness measuring instrument SE-30K of Kosaka Laboratory are shown.

* 4 Image density is Macbeth RD
The reflection density measurement value of each color is represented by -918.

* 5 Image glossiness is 60 for CY solid area
The gloss value was displayed.

* 6 The presence / absence of transfer failure is indicated by the presence / absence of white spots in the highlight portion of the recorded image. No indicates that no transfer omission occurs, and Yes indicates that transfer omission occurs.

* 7 The occurrence of fusion is determined by either the phenomenon that the dye layer dyed on the surface of the dye receiving layer during the recording image is taken into the ink sheet or the color material layer is transferred to the dye receiving layer. Indicates whether or not it has occurred.

[0062]

[Evaluation results of Examples and Comparative Examples]

(1) Examples The thermal transfer type recording materials of Examples 1 to 3 are excellent in thermal laminating suitability and excellent in surface smoothness of the dye receiving layer, and have high image density and glossiness of a recorded image. A clear recorded image with high image quality and good contrast could be obtained without any occurrence of transfer omission.

(2) Comparative Example The heat transfer type recording materials of a and Comparative Example 1 are excellent in heat laminating suitability and surface smoothness of the dye receiving layer, but are coated with the dye receiving layer by heat of the thermal head during image recording. The film softens and a fusion phenomenon occurs at the interface between the color material layer surface and the dye receiving layer, causing a problem that the color material sheet tears and transfers to the dye receiving layer surface. Further, the recorded image was low in image gloss and inferior in color saturation due to the occurrence of the fusion phenomenon.

B. The thermal transfer recording material of Comparative Example 2 is excellent in heat laminating suitability and surface smoothness of the dye receiving layer, but it is difficult to obtain a clear recorded image with good contrast due to low image density. There is a point.

C. The thermal transfer type recording material of Comparative Example 3 was excellent in heat laminating suitability and surface smoothness of the dye receiving layer, but not only the dye receiving layer but also the heat-sensitive adhesive layer was dyed with the sublimation dye. As the dyeing density of the sublimation dye decreases, the image gloss decreases, and the recorded image has poor saturation, resulting in a lack of clarity of the recorded image.

D, The thermal transfer type recording material of Comparative Example 4 is inferior in heat laminating suitability and surface smoothness of the dye receiving layer. Another problem is that it is not possible to obtain a clear recorded image with good contrast because the image density is low and transfer defects occur.

E, the thermal transfer type recording material of Comparative Example 5 is slightly inferior in surface smoothness due to the generation of fine bubbles on the surface of the dye receiving layer. Further, there is a problem in that transfer defects due to the surface smoothness of the dye receiving layer occur and the image density is rather low and a clear recorded image cannot be obtained.

F, the thermal transfer type recording material of Comparative Example 6 is excellent in heat laminating suitability and surface smoothness of the dye receiving layer, but since the thickness of the dye receiving layer is small, the image density of the recorded image is low and the contrast is low. There is a problem that a good clear recorded image cannot be obtained.

The heat transfer type recording material of Comparative Example 7 is excellent in heat laminating suitability and surface smoothness of the dye receiving layer, but since the thickness of the dye receiving layer is large, the dye receiving layer is dyed with a sublimation dye. Since the image density is low due to the decrease in the density of the image, there is a problem that a clear recorded image cannot be obtained.

In Comparative Example 8, when the dye-receiving layer was formed on the silicone layer of the release film, the cissing phenomenon of the dye-receiving layer occurred, so that there was a problem that a uniform resin layer could not be formed.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a thermal transfer recording material according to the present invention. (1) ... Base paper, (2) ... Heat-sensitive adhesive layer, (3) ... Dye receiving layer

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[Procedure amendment]

[Submission date] November 1, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 6

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

However, when a dye-receiving layer is formed on a substrate having a low surface smoothness such as high-quality paper, transfer defects occur especially in highlight areas and the like, and the recorded matter is excellent in gradation reproducibility and is beautiful. Can't get In particular, in an image with many highlight portions, the transfer omission is a fatal defect. Further, the thermal transfer type recording material using a substrate having low surface smoothness has poor adhesion when image recording is performed by superimposing the color material layer surface of the coloring material sheet and the dye receiving layer surface of the thermal transfer recording material. However, there is a problem that dyeing of the sublimation dye to the dye receiving layer hardly occurs and a high-density recorded image cannot be obtained.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

In this proposal, as a temporary carrier,
An anchor coat layer is applied to cellulose fiber paper or synthetic paper, or a releasing silicone layer is applied to a plastic sheet, and a dye receiving layer is formed thereon. In case of forming a resin layer on the silicone layer is easily cissing phenomenon occurs in the resin layer due to the wetting tension of the silicone is low, it is difficult to form a uniform resin layer. Therefore, if a viscosity increasing liquid is used to eliminate the cissing phenomenon, the leveling effect of the coating liquid is impaired, and a coated product with good surface properties cannot be obtained.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to include a synthetic resin and an anti-fusing agent on a release layer of a release film formed by forming a release layer on a transparent sheet support. After the dye-receiving layer is provided, the dye-receiving layer surface and the base paper are integrated with each other by passing the two heat-pressurized rolls through the heat-sensitive adhesive layer having heat adhesiveness. By peeling and removing the release film, the shape of the release layer surface is faithfully transferred to the dye receiving layer surface, and a thermal transfer recording material having excellent surface smoothness is prepared.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

The release layer resin formed on the transparent sheet support is selected in consideration of the adhesiveness with the transparent sheet support, the release property with the dye receiving layer, the coating suitability and the like. should, in organic acid copolymer of acrylic / stearic acid
It is preferable to use a release agent formed by crosslinking .

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

A dye receiving layer is formed on the release layer of a release film formed by forming a release layer on a transparent sheet support, and the surface of the dye receiving layer and the base paper are heat-adhesive with heat adhesiveness. After separating the release film from the interface between the dye- receiving layer surface and the release layer surface of the release film, after integrating by passing between the two rolls heated and pressed through the agent layer Thus, a thermal transfer type recording material having a highly smooth dye receiving layer surface can be obtained.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

[0034]

According to the present invention, the transparent sheet support is provided with the dye receiving layer having excellent surface smoothness on the surface of the dye receiving layer and excellent dyeing property of the sublimation dye. It is possible to obtain a thermal transfer type recording material having excellent properties, high density, and excellent surface smoothness to obtain a beautiful and clear recorded image.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction content]

Next, True Print 2200
(Nihon Victor Co., Ltd., resolution 300 DPI, recording speed 7 mm / sec), the color material layer surface of the color material sheet and the dye receiving layer surface of the thermal transfer recording material are superposed, and the heat treatment surface of the color material sheet is subjected to thermal treatment. to obtain a more heated recorded image on the head.

Claims (6)

[Claims] 1. A softening point is 45 to 70 ° C. and a thickness is 0.4 to 4.0 μm on a base paper through a heat-sensitive adhesive layer.
And a dye-receiving layer having a surface smoothness of Oken type high smoothness of 8000 seconds or more and a three-dimensional surface roughness SRa of 0.3 or less is provided. material. 2. The dye receiving layer is appropriately selected from synthetic resins such as a terpolymer of vinyl chloride / vinyl acetate / maleic anhydride, an acrylated alkyd polyol resin, an alkyd resin, a polyisocyanate resin, an acrylic resin. 2. The thermal transfer recording material according to claim 1, wherein the selected resin is a single resin or a mixture of a plurality of resins and an anti-fusing agent. 3. A non-reactive methylstyryl-modified silicone oil, an acrylic / silicone graft polymer, a polyurethane / silicone graft polymer, or a self-crosslinking silicone-modified acrylic resin, as the anti-fusing agent used in the dye-receiving layer. 3. The thermal transfer recording material according to claim 1, wherein the thermal transfer recording material is a mixture of one or more silicone oils or silicone graft polymers appropriately selected from the above. 4. The heat-sensitive adhesive layer is a polyester resin,
Self-emulsifying polyolefin resin, colloidal silica composite acrylic emulsion, low molecular weight polyolefin resin, acrylic resin, ethylene / ethyl acrylate copolymer, ethylene / acrylic acid copolymer, ethylene / vinyl acetate copolymer, ethylene / methacryl A resin or a plurality of resins appropriately selected from methyl acid copolymers, ionomer resins, vinyl acetate resins, terpolymers of ethylene / ethyl acrylate / maleic anhydride, thermoplastic elastomers, and block type isocyanate resins. The thermal transfer type recording material according to any one of claims 1 to 3, which is formed by mixing. 5. A release sheet comprising a release layer formed on a transparent sheet support, and a dye-receiving layer formed on the release layer to prepare a laminate, and the dye-receiving layer surface of the laminate. A dye having excellent surface smoothness, characterized in that the base paper and the base paper are heat-sensitively bonded via a heat-sensitive adhesive layer having a softening point of 50 to 80 ° C. to be integrated, and then the release film is peeled and removed. A method for producing a thermal transfer type recording material having a receiving layer surface. 6. The method for producing a thermal transfer recording material according to claim 5, wherein the release layer is a cured coating film of an acrylic / stearic acid copolymer and a polyisocyanate resin.