JPH05309953A - Sublimation type thermal transfer image receiving sheet and method - Google Patents

Abstract

PURPOSE:To eliminate the running inferiority of an image receiving sheet and the transfer of an ink layer by superposing a sublimation type thermal transfer material and an image receiving sheet having a receiving layer containing a dyeing resin and a lubricant or reactive silicone oil one upon another to perform thermal printing. CONSTITUTION:An image receiving sheet is produced by providing a receiving layer 2 based on a dyeing resin 3 and containing a heat-releasable resin 4 and a lubricant or silicone oil 5 on an image receiving support. The receiving layer 2 of the image receiving sheet is superposed on a sublimation type thermal transfer material and both of them are allowed to run under a condition of (speed of image receiving sheet)/(speed of thermal transfer material) > 1 or (feed quantity of image receiving sheet)/(feed quantity of thermal transfer material) > 1. Then, thermal printing is applied from the rear of the thermal transfer material and the dye of the part subjected to thermal printing is transferred to the image receiving sheet. When this method is employed, the running property of the sheet at the time of recording due to an n-time mode method is stabilized and it can be prevented that an ink layer is released to be transferred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sublimation type thermal transfer image receiving sheet, and more particularly to a sublimation type thermal transfer image receiving sheet suitable for use in a so-called n-fold mode sublimation type thermal transfer method.

[0002]

2. Description of the Related Art An ink sheet (sublimation type thermal transfer member) and an image receiving sheet are superposed. When printing is performed with the speed of the image receiving sheet n times (1 <n) times the speed of the ink sheet while both sheets are running, that is, the so-called n times mode method is attempted to perform recording, friction between the ink layer and the receiving layer, recording Due to softening and melting due to heating at the time, fusion occurs, which causes a phenomenon such as poor running of the sheet and separation of the ink layer and transfer to the receiving layer.

In order to prevent this, it has been proposed to mix a substance having releasability into the ink layer, but even if the method of running at a constant speed gives good results, the n-fold mode method is used. I couldn't improve enough.

[0004]

According to the present invention, even in the n-fold mode recording method, the storability is maintained without causing the fusion between the ink layer and the receiving layer, the defective running of the sheet, the transfer of the ink layer, the wrinkling of the ink sheet and the like. Another object of the present invention is to provide an excellent image receiving sheet for sublimation thermal transfer.

[0005]

The constitution of the present invention for solving the above-mentioned problems is a sublimation type thermal transfer image-receiving sheet as set forth in the claims.

More specifically, referring to the drawings, the present invention has a receiving layer 2 on an image receiving substrate 1, as shown in FIG. The receiving layer 2 contains a dyeable resin 3 as a main component, and contains a heat release resin 4 and a lubricant or silicone oil 5. FIG. 2 shows an example in which the heat-releasing resin has dyeability, and the main component of the receiving layer 2 is the dye-releasing heat-releasing resin 6 and contains a lubricant or silicone oil 5. Is.

In FIG. 3, the receiving layers on the image receiving substrate 1 are A layer and B layer.
In this example, the layer A is a thermal releasable resin 4 and a lubricant 5.
Is a main component, and the layer B is a layer whose main component is the dyeable resin 3.

The image receptor used in the present invention comprises a receptor layer and an image-receiving substrate, and may have an intermediate layer and a back layer if necessary.

If desired, any or all of the dyeing resin, the heat releasing resin and the lubricant may be a mixture of two or more kinds of materials.

It is not clear why the image-receiving sheet having the above-mentioned structure can prevent various troubles caused by the friction between the ink layer and the receiving layer in the recording by the n-fold mode method. By including both of the lubricants having the above-mentioned properties in the receptive layer (A layer in the case of FIG. 3), the lubricity of the ink layer / receptive layer interface during friction is remarkably enhanced, and the thermally stable lubricity is also provided. It seems to indicate.

The content of a lubricant such as oil is smaller when used in combination with a release resin than when used alone, so that dot bleeding caused by oil and images It also has the effect of improving blurring, set-off, and texture.

In the image-receiving sheet shown in FIG. 3, the B layer preferably has a thickness of 1.0 to 10.0 μm and the A layer has a thickness of 1.0.
1 to 1.0 μm, in particular, the A layer is preferably 0.5 m or less,
Releasability and lubricity can be maintained without reducing dyeability. The mixing ratio of the layer A is preferably 1 to 50 parts by weight of lubricant with respect to 100 parts by weight of the release resin. In addition to the A layer and the B layer, an ultraviolet absorber, a whitening agent, a fluorescent whitening agent, an antistatic agent and the like may be added.

Each material used in the present invention will be described below.

(1) The dyeing resin of the receiving layer includes polyester, vinyl chloride resin, vinyl acetate resin, polyamide, polyethylene, polycarbonate, polystyrene,
Polypropylene, acrylic resin, phenol resin, polyurethane, epoxy resin, polysulfone, butyral resin, melamine resin, polyvinyl alcohol, vinyl chloride vinyl acetate copolymer, styrene-acrylic copolymer, cellulose resin, natural rubber, synthetic rubber, etc. ..

Of these, a resin cured by heat, ultraviolet rays, electron beams, radiation, or other energy is preferable because it has higher heat resistance.

The resin having active hydrogen and thermosetting with isocyanate or melamine is not particularly limited, but polyester type and vinyl chloride type are preferable. Specifically, as the polyester, Byron 200, Byron 300, Byron 500, GV-110, GV-23
0, UR-1200, UR-2300, EP-101
2, EP-1032, DW-250H, DX-750
H, DY-150H (all manufactured by Toyobo), vinyl chloride-based Denka vinyl 1000C, 1000CS, 100
0CK, 1000GK, 1000GKT, 1000GS
K, manufactured by Denki Kagaku Kogyo Co., Ltd., and the like.

As a resin which is cured by ultraviolet rays, BK
-4101, BK-4102, KS-420, KW-4
50, KV-480, and the like (manufactured by Toyobo) are used. (2) Next, as the thermal releasable resin, any resin having heat resistance and releasability may be used, and it is a resin having a glass transition temperature of 100 ° C. or higher and a melting point or softening point of 200 ° C. or higher. There is no particular limitation as long as it exists. For example, thermosetting resins such as epoxy resin, silicone resin, xylene resin, urea resin, melamine resin, unsaturated polyester resin, alkyd resin, and furan resin, and cellulose acetate, cellulose butyrate acetate, and polysulfone showing relatively high heat resistance. , Thermoplastic resins such as polycarbonate and polystyrene. Each of them may be mixed with a curing agent or a cross-linking agent and cured by heat or UV.

Of these, silicone resins are particularly preferable in terms of their ability to prevent heat fusion, and preferred silicone resins include those having the following structures.

[0019]

[Chemical 1]

(However, R and R ¹ in the above formula represent a methyl group, a phenyl group and the like.) It should be noted that various modified silicone resins such as alkyd modified silicone resin, epoxy modified silicone resin and acrylic modified silicone resin should also be used. You can As a matter of course, the above resin may be one in which a curing agent is mixed and cured.

(3) The heat-releasing resin having the dyeing property of the receptor layer may be any resin having heat resistance, releasing property and dyeing property, and has a glass transition temperature of 100 ° C. or higher. It is not particularly limited as long as it is a resin having a melting point or a softening point of 200 ° C. or higher, but a silicone resin modified so as to have a dyeing property is preferable, and examples thereof include a polyester-modified silicone resin and an acrylic urethane silicone resin.

The polyester-modified silicone resin is

[0023]

[Chemical 2]

(R and R'are methyl groups, phenyl groups, etc.)
It is preferable because it can be synthesized by condensation of a hydroxyl group or an alkoxy group of a silicone resin having a repeating unit of the above with an alcoholic hydroxyl group of a polyester and has high dyeability.

The acrylic urethane silicone resin is a room temperature curing type modified silicone resin in which acrylic, urethane and silicone are compounded.

A resin in which a releasable segment is graft-bonded to a main chain made of a dyeable resin is preferable because it has high dyeability and good image storability.

Examples of the dyeable resin include acrylic resin, vinyl resin, polyester resin, urethane resin, polyamide resin and cellulose resin.

Examples of the releasable segment include polysiloxane segment, carbon fluoride segment, long chain alkyl segment and the like.

(4) As the lubricant, oils which are liquid at room temperature and waxes having a melting point of 100 ° C. or less can be used. Examples thereof include petroleum-based lubricating oil such as liquid paraffin, hydrogen halide, diester oil, Silicone oils, synthetic lubricating oils such as fluorosilicone oils, various modified silicone oils (epoxy-modified, amino-modified, alkyl-modified, polyether-modified, etc.), silicone-based lubricants such as copolymers of organic compounds such as polyoxyalkylene glycol and silicone Substance,
Various fluorochemical surfactants such as fluoroalkyl compounds, fluorochemical lubricating substances such as trifluorochloroethylene low polymer,
Examples include waxes such as paraffin wax and polyethylene wax, higher fatty acids, higher aliphatic alcohols, higher aliphatic acid amides, higher fatty acid esters, and higher fatty acid salts.

(5) As the reactive silicone oil,
In some cases, the modifying groups of the two modified silicone oils react, and in other cases, a crosslinking agent is used.

Examples of reacting two modified silicone oils are epoxy-modified silicone oil and amino-modified silicone oil, epoxy-polyether-modified silicone oil and amino-modified silicone oil, epoxy-modified silicone oil and carboxyl-modified silicone oil, and epoxy-modified silicone oil. There are combinations such as polyether modified silicone oil and carboxyl modified silicone oil, epoxy modified silicone oil and alcohol modified silicone oil, and epoxy / polyether modified silicone oil and alcohol modified silicone oil.

Examples of the reaction using a crosslinking agent include combinations of isocyanate and amino-modified silicone oil, isocyanate and alcohol-modified silicone oil, and the like.

Among these combinations, those having good preservability are preferably reaction products of an isocyanate compound and a silicone oil having active hydrogen, and when further releasability is required, epoxy-modified silicone oil and alcohol-modified. A combination of silicone oils or a combination of epoxy-modified silicone oils and carboxyl-modified silicone oils is preferred.

(6) When the lubricant has a fluidity that is incompatible with the resin, a large amount of the lubricant is present on the surface of the receiving layer, and the lubricity of the ink layer / receiving layer interface during friction Can be significantly increased.

The silicone oil that is incompatible with the resin used in the dyeable resin is one that is incompatible with the resin solution and is dispersed or opaque, which varies depending on the resin and solvent used.

For example, the dyeing resin is a vinyl chloride / vinyl acetate copolymer and the solvent is toluene / methyl ethyl ketone (1
/ 1) Examples of the silicone oil that is incompatible with the resin when it is a mixed solvent include amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, dimethyl silicone oil, silicone diamine, etc. -SF8417, SF8411, SF84 manufactured by Silicone Co., Ltd.
18 and TSF451-10 manufactured by Toshiba Silicone Co., Ltd.
0, Shin-Etsu Chemical Co., Ltd. KF96H, X-22-1
61 and the like, and carboxyl-modified silicone oil is particularly preferable.

The mixing ratio in the receptor layer is preferably 100 parts by weight of the dyeing resin, and 5 parts by weight of the heat-releasing resin and 0.1-30 parts by weight of the lubricant are preferable, but 1 part of the lubricant is preferable. The storage stability is particularly good when it is set to the following.

[0038]

EXAMPLES The present invention will be specifically described below with reference to examples. The amounts (parts) of each component described in the examples are parts by weight.

Example I-1 (Recipient layer formulation) Polyester resin, Byron 200 (manufactured by Toyobo) 10 parts Cellulose acetate butyrate (manufactured by Kanto Kagaku) 10 parts Amino-modified silicone oil SF8417 (manufactured by Toray Silicone) 1 part Toluene 40 Parts Methyl ethyl ketone 40 parts The above liquid was applied to a synthetic paper (Yupo FPG150, Oji Oka Synthetic paper) having a thickness of about 150 μm using a wire bar to form a 5 μm receptive layer to obtain an image receptor.

(Formulation for Ink Layer) Sublimation dye Kayaset Blue 714 (manufactured by Nippon Kayaku) 16 parts Polyvinyl butyral resin, BX1 (manufactured by Sekisui Chemical) 7 parts Isocyanate, Coronate L (manufactured by Nippon Polyurethane) 2 parts Amino-modified silicone Oil SF8417 (made by Toray Silicone) 1 part Epoxy-modified silicone oil SF8411 (made by Toray Silicone) 1 part Toluene 70 parts Methyl ethyl ketone 70 parts A heat resistant layer of 1 μm silicone resin was formed on the back surface 8
An ink layer having a thickness of 3 μm was formed on a μm-thick aromatic polyamide film using a wire bar to obtain an ink sheet.

Similarly, Examples I-2 to I-6 and Comparative Example I-
In 1 to I-2, the receiving layer formulation was as follows. The ink sheet was the same as in Example I-1.

Example I-2 Polycarbonate, Macrolon 5705 (manufactured by Bayer) 5 parts Silicone resin, SR2410 (manufactured by Toray Silicone) 1 part Surfactant, FC431 (manufactured by 3M) 0.1 part Methylene chloride 90 parts Example I- 3 Polyester acrylate, Unidick, V-3207 (manufactured by Dainippon Ink) 20 parts Diluent, Unidick 016 (manufactured by Dainippon Ink) 50 parts Polymerization initiator, Irgacure 651 (manufactured by Ciba-Gaiki) 0.6 part Silicone resin, SR2410 (Toray Silicone) 1 part Alcohol-modified silicone oil SF8427 (Toray Silicone) 0.1 part Example I-4 Urethane acrylate, Unidick C7-113 (Dainippon Ink) 20 parts Diluent, Unidick 016 (Manufactured by Dainippon Ink) 50 parts polymerization Initiator, Irgacure 651 (manufactured by Ciba-Gaiki) 0.7 parts Epoxy resin, Epicoat 828 (manufactured by Shell Chemical) 1 part Triethylenetetramine 0.05 parts Lanolin fatty acid oil 0.1 parts Example I-5 Vinyl chloride vinyl acetate Vinyl vinyl alcohol Copolymer 10 parts VAGH (manufactured by Union Carbide) Isocyanate, Coronate L 2 parts Silicone resin KS772 (manufactured by Shin-Etsu Chemical) 2 parts Paraffin wax HNP10 (manufactured by Nippon Seiro Co., Ltd.) 0.1 part Toluene 40 parts Methyl ethyl ketone 40 parts Example I -6 Polyester resin, Byron 200 (manufactured by Toyobo) 10 parts Isocyanate, Coronate L 2 parts Epoxy resin, Epicoat 828 2 parts Carboxyl-modified silicone SF8418 1 part Toluene 40 parts Methyl ethyl ketone 40 parts Comparative Example I-1 Actual In Example I-1, similar except excluding the cellulose acetate butyrate.

Comparative Example I-2 The same as in Example I-1, except that the silicone oil was omitted.

In the above, Examples I-3 and I-4 were dried and then irradiated with ultraviolet rays by a high pressure mercury lamp (80 w / cm, 5 seconds).

All the samples were cured at 60 ° C. for 50 hours and then printed.

(Test Results) Printing and recording were performed under the following printing conditions.

Printing power: 442 mw / dot Thermal head: 6 dots / mm partial glaze type Speed ratio between image receiving paper and recording medium: n = 1 to 15 Applied energy: 2.21 mj / dot Running state from above, ink layer Table 1 shows the thermal transfer state of the above.

[0048]

[Table 1]

(Note) Running conditions are sticking, wrinkles,
The density unevenness is visually determined.

The thermal transfer of the ink layer was judged by observing the printed image and the ink sheet after printing.

The image density is determined by comparing images under the condition of n = 7.

Example II-1 (Recipient layer formulation) Urethane acrylate, Unidick C7-113 (Dainippon Ink) 20 parts Diluent, Unidick 016 (Dainippon Ink) 50 parts Polymerization initiator, Irgacure 651 (Ciba Gaiky) ) 0.7 part Silicone resin, SR2410 (Toray silicone) 1 part Amino-modified silicone oil, SF8417 (Toray silicone) 0.05 part Epoxy-modified silicone oil, SF8411 (Toray silicone) 0.05 part It is applied to a synthetic paper (Yupo FPG150, Oji Okaka Synthetic Paper) having a thickness of about 150 μm, dried, and then irradiated with ultraviolet rays from a high pressure mercury lamp (80 w / cm, 5 seconds) to form a 5 μm-thick receiving layer. After curing at 60 ° C. for 50 hours, an image receptor was obtained.

The same ink sheet as that used in Example I-1 was used.

Example II-2 In Example II-1, except that the silicone oil in the receptor layer was changed to alcohol-modified silicone oil SF8427 (Toray Silicone) 0.1 part isocyanate, Coronate L (Nippon Polyurethane) 0.6 part. Is the same as in Example II-1 above.

Example II-3 In Example II-1, the silicone oil in the receiving layer was changed to epoxy-modified silicone oil, SF8411 (Toray silicone) 0.05 part, and alcohol-modified silicone oil SF8427 (Toray silicone) 0.05 part. Otherwise, it is the same as in Example II-1 above.

Comparative Example II-1 The same as Example II-1 except that the silicone oil in the receptor layer in Example II-1 was changed to 0.1 part of silicone oil KF96 (Shin-Etsu Chemical Co., Ltd.).

(Test Results) Printing Conditions The same running conditions as in Example I-1 to Comparative Example I-2 and running conditions and image storability when printed under the above conditions are shown in Table 2 below.

[0058]

[Table 2]

(Note) Running conditions are sticking, wrinkles,
The density unevenness is visually determined.

The storability was judged by comparing the image after printing with the images before and after being stored at 60 ° C. for 300 hours in the dark. Example III-1 (Receptor layer formulation) Vinyl chloride vinyl acetate Vinyl alcohol copolymer VAGH (manufactured by Union Carbite) 10 parts Isocyanate Coronate L (manufactured by Nippon Polyurethane) 2 parts Silicone resin KS772 (manufactured by Shin-Etsu Chemical) 2 parts Carboxy-modified silicone oil SF8418 (manufactured by Toray Silicone) 5 parts Toluene 40 parts Methyl ethyl ketone 40 parts The above liquid Was applied onto a synthetic paper (Yupo FPG150, Oji Okaka Synthetic Paper) having a thickness of about 150 μm using a wire bar to form a receiving layer having a thickness of 5 μm to obtain an image receptor.

The same ink sheet as that used in Example I-1 was used.

The following Examples III-2, III-3 and Comparative Example II
In Example I-1, Example III was repeated except that the receiving layer formulation was as follows.
Same as -1.

Example III-2 One part of the carboxy-modified silicone oil of Example III-1 was used.
It was the same except that it was a part.

Example III-3 Carboxyl-modified silicone oil S of Example III-1
The same procedure was applied except that the amount of F84 (made by Toray Silicone) was 0.5 part.

Comparative Example III-1 The procedure of Example III-1 was repeated except that the carboxy-modified silicone oil of Example III-1 was changed to alcohol-modified silicone oil SF3746 (made by Toray Silicone).

The above sample was printed at 60 ° C. for 50 hours after curing.

(Test Results) Printing and recording were performed under the following printing conditions.

Applied power: 442 mw / dot Thermal head: 6 dots / mm partial glaze type Speed ratio of image receiving paper to recording medium n = 7 Applied energy: 2.21 mj / dot Running state from above, thermal transfer of ink layer, Shows the storability of images.

[0069]

[Table 3]

(Note) Running conditions are sticking, wrinkles,
The density unevenness is visually determined.

The thermal transfer of the ink layer was judged by observing the printed image and the ink sheet after printing.

The storability was judged by comparing the image after printing with the image before and after storage at 60 ° C. in the dark for 300 hours.

Example IV-1 (Recipient layer formulation) Polyester acrylate, Unidic V-3207 (manufactured by Dainippon Ink) 20 parts Diluent Unidic 016 (manufactured by Dainippon Ink) 50 parts Polymerization initiator Irgacure 651 ( 0.6 part Acrylic urethane silicone resin US53F (Sanyo Kasei) 1 part Alcohol-modified silicone oil SF8427 (manufactured by Toray Silicone) 0.1 part The above liquid is applied to a synthetic paper (Yupo) with a thickness of about 150 μm using a wire bar. FPG150, Oji Okaka Synthetic paper) to form a 5μm receptor layer, high pressure mercury lamp (80w / cm, 5
Second) for ultraviolet irradiation. Further, curing was carried out at 60 ° C. for 50 hours to obtain an image receptor.

The same ink sheet as in Example I-1 was used.

Similarly, Examples IV-2 and IV-3 and Comparative Example IV-
In No. 1, the receiving layer formulation was as follows.

Example IV-2 Polyester-modified silicone resin AY42-125 was used in place of the acrylic urethane silicone resin in Example IV-1.
The same as Example IV-1 except that it is made of Toray Silicone.

Example IV-3 70 parts of a polyester (molecular weight: 25,000) consisting of 45 mol% terephthalic acid dimethyl ester, 5 mol% monoaminoterephthalic acid dimethyl ester and 50 mol% trimethylene glycol was mixed in an equal amount with methyl ethyl ketone and toluene. Dissolve in 700 parts of a solvent and appropriately lower 10 parts of polysiloxane compound (1) (molecular weight 10,000) at 60 ° C.
And reacted for 5 hours to obtain a compound.

[0078]

[Chemical 3]

Polysiloxane compound (1) The same as Example IV-1, except that 5 parts of the compound obtained in place of the acrylic urethane silicone resin in Example IV-1 was used.

Comparative Example IV-1 The same as Example IV-1, except that the unmodified silicone resin SR2410 (made by Toray Silicone) was used instead of the acrylic urethane silicone resin in Example IV-1.

(Test Results) The printing conditions for the test were the same as in Example I-1 to Comparative Example I-2.

From the above, Table 4 shows the image density and the image storability.

[0083]

[Table 4]

(Note) The image density was judged by comparing the images under the condition of n-7. The image storability was visually judged after the sample after recording was stored at 60 ° C. for 100 hours. Poor x ... Poor Example V-1 [Receptor layer B layer (lower layer) formulation] Polyester resin, Byron 200 (manufactured by Toyobo) 20 parts Toluene 40 parts Methyl ethyl ketone 40 parts [Receptor layer A layer (upper layer) formulation] Polycarbonate, McLauron 5705 (Manufactured by Bayer) 5 parts Surfactant, FC431 (manufactured by 3M) 0.1 part Methylene chloride 90 parts On a synthetic paper (Yupo FPG150, Oji-Okaka Synthetic paper) having a thickness of about 150 μm using a wire bar. To form an image receiving sheet having a B layer of 5 μm and an A layer of 1 μm, respectively.

(Formulation for Ink Layer) Sublimation dye, Kayaset Blue 714 (manufactured by Nippon Kayaku) 16 parts Polyvinyl butyral resin, BX1 (manufactured by Sekisui Chemical) 7 parts Isocyanate, Coronate L (manufactured by Nippon Polyurethane) 2 parts Amino-modified Silicone oil, SF8417 (made by Toray Silicone) 1 part Epoxy-modified silicone oil SF8411 (made by Toray Silicone) 1 part Toluene 70 parts Methyl ethyl ketone 70 parts A 1 μm heat resistant layer of silicone resin was formed on the back surface 8
A transfer bar was obtained by forming a 3 μm ink layer on a μm-thick aromatic polyamide film using a wire bar.

Similarly, image receiving sheets of the following Examples and Comparative Examples were obtained.

Example V-2 (Receptor layer B layer formulation) Vinyl chloride vinyl acetate vinyl alcohol copolymer) VAGH (Union Carbide) 20 parts Isocyanate, Coronate L (Nippon Polyurethane) 10 parts Toluene 40 parts Methyl ethyl ketone 40 parts Same as Example V-1 except that the layer B had the above formulation.

Example V-3 (Receptor layer A layer formulation) Polyester-modified silicone resin AY42-125 (manufactured by Toray Silicone) 50 parts Amino-modified silicone oil, SF8417 (manufactured by Toray Silicone) 5 parts Toluene 20 parts Methyl ethyl ketone 20 parts Example The procedure was the same except that the layer A in V-2 had the above formulation.

Example V-4 Same as Example V-3 except that 2 parts of epoxy-modified silicone oil (SF8411) and 2 parts of alcohol-modified silicone oil (SF8427) were used as the silicone oil.

Example V-5 Same as Example V-4 except that the thickness of the A layer was 0.3 μm.

Comparative Example V-1 The procedure of Example V-1 was repeated except that the layer A was not used.

Comparative Example V-2 The procedure of Example V-1 was repeated except that the B layer was not used.

(Test Results) The running state and the image when printed under the same conditions as in Example I-1 were evaluated. The results are shown in Table 5.
Shown in.

[0094]

[Table 5]

(Note) The running condition is visually checked for sticking and wrinkles.

The image is visually judged for density, sensitivity, unevenness and fusion.

[0097]

The effects of the present invention described above are summarized as follows.

(1) By containing a heat-releasing resin and a lubricant in addition to the dyeing resin, the running property of the sheet during recording by the n-fold mode method is stabilized, and the ink layer peels off. It is possible to prevent the transfer.

(2) By containing a heat releasing resin and a reactive silicone oil, the running property of the sheet during recording by the n-fold mode method is further stabilized, and the ink layer is prevented from peeling off and transferring. can do.

(3) By using a curable resin as the dyeing resin, the heat resistance is further increased and the multiplicity is high (n
However, it can be printed under conditions.

(4) By incorporating a lubricant which is incompatible with the resin, the lubricity is further improved, and the above (1),
The effect of (2) is further improved.

(5) When the heat-releasing resin is a resin having a dyeing property, it is possible to prevent a decrease in image density when recording is performed by the n-fold mode method.

(6) By using a resin made of a copolymer of polyester having particularly good dyeing property and a silicone resin having particularly good heat release property, the effect of preventing reduction in image density is improved.

(7) By using a resin in which a releasable segment is graft-bonded to the main chain of a dyeable resin,
Conventionally, it is possible to prevent deterioration of storage stability when a heat release resin is used.

(8) By using a thermosetting dyeing resin and a releasing resin, fusion with the ink layer in n-times mode recording, running failure, and thermal transfer of the ink layer are prevented. Wrinkles can be prevented.

(9) By laminating two receptive layers on each other, an image receiving sheet having both releasability and dyeing property can be obtained.

(10) Especially, the effect is effective in the multi-time recording method by the n-fold mode method which requires the releasability and the friction characteristic.

(11) By setting the thickness to 0.1 to 0.5 μm, an image receiving sheet having particularly high dyeability can be obtained.

(12) By curing the lower layer, stable recording can be performed even in printing with a large speed difference.

(13) By using a modified silicone resin as the releasing resin of the surface layer, the dyeing property and the releasing property can be further improved.

(14) By using a reactive silicone oil as the lubricant of the surface layer, the lubricity is further improved and wrinkles can be prevented.

[Brief description of drawings]

[Figure 1]

[Fig. 2]

FIG. 3 is a schematic view of a cross section of an image receiving sheet for explaining a specific example of the invention.

[Explanation of symbols]

 1 Image Receiving Substrate 2 Receptive Layer 3 Dyeing Resin 4 Thermal Releasing Resin 5 Lubricant or Silicone Oil 6 Dyeing Thermal Releasing Resin A Upper Layer B Lower Layer

Claims (12)

[Claims] 1. A sublimation type thermal transfer member and an image receiving sheet are overlapped with each other,
(Speed of image receiving sheet) / (Speed of thermal transfer body)> 1 or (Amount of image receiving sheet fed) / (Amount of thermal transfer body fed)>
In the image receiving sheet used in the recording method in which both of them are run under the condition of 1, thermal printing is performed from the back surface of the thermal transfer member and the dye in that portion is transferred onto the image receiving sheet, the receiving layer of the image receiving sheet is dyeable An image-receiving sheet for sublimation-type thermal transfer, comprising a resin and / or a releasable resin and a lubricant or a reactive silicone oil. 2. The image-receiving sheet for sublimation thermal transfer according to claim 1, wherein the dyeable resin is a cured resin. 3. The image receiving sheet for sublimation thermal transfer according to claim 1, wherein the lubricant is incompatible with the dyeing resin and the heat releasing resin. 4. The sublimation type according to claim 1, further comprising a heat-releasing resin having a dyeing property in place of the dyeing resin and the heat-releasing resin. Image receiving sheet for thermal transfer. 5. The image receiving sheet for sublimation thermal transfer according to claim 1, wherein the heat-releasing resin having dyeing property is a polyester-modified silicone resin. 6. The sublimation type thermal transfer according to claim 4, wherein the heat-releasing resin having dyeing property has a constitution in which a releasing segment is graft-bonded to a main chain constituting the dyeing resin. Image receiving sheet. 7. An image receptor comprising at least two layers having a dyeing property laminated on a substrate, wherein the surface layer comprises a heat releasing resin and a lubricant, and the lower layer comprises a dyeing resin. An image-receiving sheet for sublimation thermal transfer, which is characterized in that 8. The image receiving sheet for sublimation thermal transfer according to claim 8, wherein the surface layer has a thickness of 0.5 μm or less. 9. The image receiving sheet for sublimation thermal transfer according to claim 8, wherein the dyeing resin which is a main component of the lower dyeing layer is a cured resin. 10. The sublimation-type thermal transfer according to claim 8, wherein the heat-releasing resin of the surface layer is a silicone resin modified to have a dyeing property. Image receiving sheet. 11. The image receiving sheet for sublimation thermal transfer according to claim 8, wherein the lubricant of the surface layer is a reactive silicone oil. 12. A transfer body and the image receiving sheet for sublimation type thermal transfer according to claim 1 are superposed, and the speed of the image receiver / the speed of the transfer body> 1 or the feeding amount / transfer of the image receiver. A sublimation-type thermal transfer recording method, wherein printing is performed under the condition that the feeding amount of the body is> 1.