JP2007331180A - Sublimation transfer image-receiving sheet, sublimation transfer sheet and sublimation transfer-recording set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sublimation transfer image receiving sheet, the image quality and light resistance of the transferred image of which are favorable and which is used under the condition being piled up with a sublimation transfer sheet being free from foreign noise and sticking at the time of image formation (printing). <P>SOLUTION: This sublimation transfer image receiving sheet is one having an accepting layer on a base material under the condition that the binder resin of the accepting layer consists of a resin prepared by blending a polyester resin having a glass transition temperature of ≥30°C and ≤75°C with a cellulose acetate butylate having a glass transition temperature of ≥100°C and ≤150°C in the blending ratio being 10-100 pts.wt. of the cellulose acetate butylate to 100 pts.wt. of the polyester resin. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sublimation transfer image-receiving sheet that is used while being superposed on a sublimation transfer sheet. Specifically, the image quality and light resistance of a transferred image are good, and abnormal noise or noise is generated during image formation (printing). The present invention relates to a sublimation transfer image receiving sheet without sticking.

  In recent years, a so-called sublimation transfer recording system is attracting attention as a kind of full-color printing system because of its features such as fidelity of color tone reproduction and high image quality. This method uses a sublimation transfer sheet (hereinafter referred to as a transfer sheet) formed by applying a sublimation dye on a substrate, and a thermal head having a heating element that selectively applies a voltage according to a recording signal. The thermal head is pressed against the sublimation transfer image receiving sheet (hereinafter referred to as an image receiving sheet) having a dyeable layer (hereinafter referred to as a receiving layer) on another substrate. In addition, by applying a voltage to the heating element based on the recording information, the dye is transferred and fixed (transferred) to the receiving layer of the image receiving sheet by adhesion, adsorption, dyeing or the like to obtain a desired recorded image. It is a recording method.

  Since the receiving layer of the image receiving sheet used in this sublimation transfer recording system needs to receive and dye the dye sublimated from the transfer sheet, it is generally composed mainly of a resin having high affinity for the dye. Yes.

  As a prior art relating to a resin constituting such a receiving layer, Patent Document 1 discloses that a polyester resin, a polycarbonate resin, a polyvinyl acetal resin including a polyvinyl butyral resin, an acrylic resin, a cellulose resin, a polystyrene resin, or the like is used. . However, when the receiving layer is composed of these resins in consideration of dye preservability, light fastness, and other image preservability, it is particularly important when printing in high temperature, high humidity, low temperature, and low humidity environments. When the transfer sheet and the image receiving sheet are separated from each other, there is a problem that abnormal noise is generated or, in a severe case, the transfer sheet and the image receiving sheet are adhered.

  Problems related to dyeing property and peeling at the time of printing are in a trade-off relationship. To solve these problems, various additives are added, and the resin used in the receiving layer is mixed. Although the problem has been solved, the desired characteristics have not yet been obtained.

  In order to solve these problems, a method has been proposed in which isocyanate is added to a polyester resin or the like, and the resin constituting the receiving layer is three-dimensionally cross-linked by reaction of both (see Patent Documents 2 and 3). However, according to these methods, although the image storage stability such as light resistance is improved to a certain extent, the highlight portion of the image transferred to the receiving layer feels rough because sufficient dyeability cannot be obtained. Thus, there is a problem that uniform and good image quality cannot be obtained (see Patent Documents 2 and 3).

  On the other hand, the above-mentioned problems relating to dyeing property and peeling at the time of printing are not only problems of the image receiving sheet but also problems of the transfer sheet. As conventional techniques of the binder resin constituting such a transfer sheet, Patent Documents 4 and 5 disclose polyvinyl acetal resins including cellulose derivatives, polyacrylamide resins, polyester resins, polyvinyl butyral resins, and the like. If these transfer sheets are designed in consideration of the printing sensitivity related to the dyeing property when transferred to the image receiving sheet, problems such as abnormal noise and sticking occur when peeling from the image receiving sheet, and these problems are solved. In order to achieve this, methods such as adding various additives such as fillers and waxes and mixing and using the above resins have been studied, but the desired properties have not yet been obtained.

JP 60-25793 A JP 7-40669 A JP-A-8-175033 JP-A-8-34170 Japanese Patent Publication No. 7-29504

  The present invention has been made in order to solve the conventional problems, and has a sublimation transfer image receiving sheet, a sublimation transfer sheet, and a sublimation transfer recording set comprising these, which have good printing characteristics and can prevent abnormal noise and sticking during peeling. The purpose is to provide.

A first invention for achieving the above object is a sublimation transfer image-receiving sheet having a receiving layer on a substrate, and the binder resin of the receiving layer has a glass transition temperature (hereinafter abbreviated as “Tg”) of 30. A polyester resin having a glass transition temperature of 100 ° C. or higher and 150 ° C. or lower and a cellulose acetate butyrate having a glass transition temperature of 100 ° C. or higher and 75 ° C. or lower. It consists of a sublimation transfer image receiving sheet mixed in a proportion by weight.
2nd invention is a sublimation transfer sheet which has the sublimation transfer ink layer which consists of dye and binder resin on a base material, Comprising: The said binder resin is a polyvinyl butyral resin whose glass transition temperature is 60 degreeC or more and 100 degrees C or less A cellulose acetate butyrate having a glass transition temperature of 100 ° C. or more and 150 ° C. or less, and 10 to 10 parts by weight of cellulose acetate butyrate with respect to 100 parts by weight of the polyvinyl acetal resin containing the polyvinyl butyral resin. It consists of a sublimation transfer sheet mixed at a ratio of 100 parts by weight.
A third invention comprises a sublimation transfer recording set in which the sublimation transfer image receiving sheet and the sublimation transfer sheet are combined.

  The present inventor has intensively studied to solve the above-described problems of the prior art.

(Sublimation transfer image receiving sheet)
In the above-described prior art, polyester resin, polycarbonate resin, and vinyl chloride-vinyl acetate copolymer are commonly used as the binder resin for the receiving layer of the image receiving sheet. Of these, polyester resin is most preferable in consideration of handling properties, price, and the like. However, when polyester resin is used as the binder resin of the receiving layer to obtain desired dye dyeing properties and light resistance, it is necessary to set Tg low when comparing polyesters of the same skeleton. Specifically, it is 75 ° C. or lower, and if it is higher than that, it is inferior in dyeing property and light resistance. When such a low Tg resin is used as the binder resin, abnormal noise or sticking when peeling from the sublimation transfer sheet during printing, particularly abnormal noise or sticking in a high temperature and high humidity environment becomes a problem. . Generally, isocyanates and the like are added and cured to prevent abnormal noise and sticking. However, when cured with isocyanates or the like, the dyeing properties and light resistance inherent in low Tg polyester resins are significantly reduced. . As a result of intensive studies, the inventors of the present invention mixed the low Tg polyester resin and cellulose acetate butyrate having a Tg of 100 ° C. or higher and 150 ° C. or lower to suppress deterioration of dyeing and light resistance as much as possible. It was found that abnormal noise and sticking can be prevented.

The polyester resin is not particularly limited except that Tg is 30 ° C. or higher and 75 ° C. or lower, but a polyester resin having a bisphenol skeleton is more preferable in consideration of dyeability and the like.
When Tg is less than 30 ° C., not only dye dyeing property and light resistance are improved, but even if cellulose acetate butyrate is mixed, sticking and noise cannot be prevented. There is a risk that sticking or abnormal noise cannot be prevented in an environment such as low temperature and low humidity, and a printed image may be blurred. If it exceeds 75 ° C., desired dyeability and light resistance cannot be obtained when cellulose acetate butyrate is mixed.

  Examples of such polyester resins include those manufactured by Toyobo Co., Ltd. whose trade names are Byron RV600 (Tg 47 ° C.), Byron GK792 (Tg 38 ° C.), Byron 220 (Tg 53 ° C.), Byron 290 (Tg 72 ° C.) Moreover, the product made by Unitika company whose brand name is Elitel UE3350 (Tg52 degreeC), Elitel UE3370 (Tg53 degreeC), Elitel UE3210 (Tg45 degreeC), etc. are mentioned.

  Cellulose acetate butyrate is not particularly limited except that Tg is 100 ° C. or higher and 150 ° C. or lower. If Tg is less than 100 ° C, sticking and abnormal noise cannot be improved, and if it exceeds 150 ° C, not only the improvement effect such as sticking is seen, but also dyeing property and light resistance. There is a risk of lowering.

  Examples of such cellulose acetate butyrate include trade names of CAB551-0.2 (Tg101 ° C), CAB553-0.4 (Tg136 ° C), CAB531-1 (Tg115 ° C), CAB381-0.1 (Tg123). ° C), CAB381-0.5 (Tg130 ° C), CAB381-2 (Tg133 ° C), CAB381-2BP (Tg130 ° C), CAB381-20BP (Tg128 ° C), CAB321-0.1 (Tg127 ° C) There are also those manufactured by Chemical Corporation.

  As a substrate for providing the receiving layer of the sublimation transfer image-receiving sheet according to the present invention thereon, a film having relatively good heat resistance, for example, polyester, polypropylene, PEEK, PEN, PET, polystyrene, polysulfone, aromatic Various films such as polyamide, polyimide, polycarbonate, and triacetyl cellulose, fine paper, art paper, coated paper, cast coated paper, and the like can be mentioned. Among them, polyester, PEEK, PEN, aromatic polyamide, and polyimide film are preferable. Moreover, the composite base material which provided these as a core material and provided the foamed film, the non-foamed film, etc. on the single side | surface or both surfaces may be sufficient. Furthermore, if necessary, a layer imparted with plasticity and conductivity may be provided on the back surface of these base materials, and an intermediate layer or the like may be provided on the receiving layer side.

  The sublimation transfer image-receiving sheet according to the present invention has, as necessary, an additive known in the art, for example, a mold release, on each component constituting the above-described receiving layer on at least one surface of the substrate. Add an agent, ultraviolet absorber, antioxidant, light stabilizer, inorganic filler, etc., dissolved in an appropriate organic solvent or dispersed in an organic solvent or water, for example, bar coater, roll coater, It can be obtained by applying a means such as an air knife coater, gravure coater, screen printing method, reverse roll coating method, etc., and then drying to form a receiving layer.

  The thickness of the receiving layer formed as described above is arbitrary, but is generally 1 to 20 μm.

(Sublimation transfer sheet)
In the above prior art, as the binder resin for the sublimation transfer ink layer of the transfer sheet, a polyvinyl acetal resin containing a cellulose derivative, a polyacrylamide resin, a polyester resin, or a polyvinyl butyral resin is generally used. Among these, polyvinyl acetal resin containing polyvinyl butyral resin is most preferable in consideration of handling property, price and the like. However, when a polyvinyl acetal resin containing a polyvinyl butyral resin is used as a binder resin for a sublimation transfer ink layer and a desired printing sensitivity is obtained, when a polyvinyl acetal resin containing polyvinyl butyral having the same skeleton is compared, Tg is set low. There is a need to. Specifically, it is 100 ° C. or lower, and if it is higher, the printing sensitivity is inferior. When such a low Tg resin is used as the binder resin, there is a problem of abnormal noise or sticking when peeling from the image receiving sheet. In general, sticking or the like is prevented by adding a wax or a filler, but the print sensitivity and the sharpness of the image are significantly reduced. As a result of intensive studies, the present inventors mixed the polyvinyl acetal resin containing the low Tg polyvinyl butyral resin with cellulose acetate butyrate having a Tg of 100 ° C. to 150 ° C., thereby suppressing the decrease in print sensitivity as much as possible. We found that noise and sticking during printing can be prevented.

As polyvinyl acetal resin containing polyvinyl butyral resin, there is no limitation in particular except that Tg is 60 degreeC or more and 100 degrees C or less.
When the Tg of the polyvinyl acetal resin containing the polyvinyl butyral resin is less than 60 ° C., not only a further improvement in the printing sensitivity can be seen, but even if cellulose acetate butyrate is mixed, it cannot prevent sticking or abnormal noise, In particular, sticking or abnormal noise cannot be prevented in an environment such as high temperature, high humidity, low temperature, and low humidity, and a printed image may be blurred. When the temperature exceeds 100 ° C., desired print sensitivity cannot be obtained when cellulose acetate butyrate is mixed.

  Cellulose acetate butyrate is not particularly limited except that Tg is 100 ° C. or higher and 150 ° C. or lower. If Tg is less than 100 ° C., sticking or abnormal noise cannot be prevented, and if it exceeds 150 ° C., improvement in sticking or the like is not improved, and print sensitivity may be lowered. .

  Examples of such cellulose acetate butyrate include trade names of CAB551-0.2 (Tg101 ° C), CAB553-0.4 (Tg136 ° C), CAB531-1 (Tg115 ° C), CAB381-0.1 (Tg123 ° C). ), CAB381-0.5 (Tg130 ° C), CAB381-2 (Tg133 ° C), CAB381-2BP (Tg130 ° C), CAB381-20BP (Tg128 ° C), CAB321-0.1 (Tg127 ° C) The thing made by company is mentioned.

  Examples of polyvinyl acetal resins containing such polyvinyl butyral resins include trade names of Denkabutyral 3000-1 (Tg 72 ° C.), Denka Butyral 3000-2 (Tg 73 ° C.), Denka Butyral 3000-K (Tg 67 ° C.), Denka Butyral. 5000-A (Tg 93 ° C.), Denkabutyral KY24 (Tg 100 ° C.), manufactured by Denki Kagaku Kogyo Co., Ltd., Slek BL-SH-1 (Tg 60 ° C.), Sekisui Chemical Co., Ltd. The product is mentioned.

  The sublimation transfer ink layer of the sublimation transfer sheet according to the present invention may contain conventionally known additives and the like as long as the object of the present invention is not impaired.

  As a substrate of the sublimation transfer sheet of the present invention, a known material that has been conventionally used as a substrate can be used as it is. For example, polyester film such as polyethylene terephthalate film, polyethylene naphthalate film, polycarbonate film, polyvinyl chloride film, polyvinylidene chloride film, cellulose acetate film, polyvinyl alcohol film, nylon film, fluororesin film, aramid film, polyamide film, polyethylene Film, polysulfone film, polystyrene film, polyimide film, polypropylene film, cellophane film, ionomer film and other synthetic resin films, chlorinated rubber film and other rubber films, condenser paper, glassine paper, thin paper such as tracing paper, non-woven fabric, and Although these composites etc. are mentioned, it is not limited to these. As the substrate, a heat resistant film is preferable, and in particular, a polyethylene terephthalate film is preferable from the viewpoint of price, mechanical strength, dimensional stability, heat resistance and the like. The thickness of these base materials is preferably 0.5 to 20 μm, more preferably 3 to 10 μm.

  In addition, the surface opposite to the surface on which the sublimation transfer ink layer is formed (back surface), that is, the surface to which heat is directly applied during transfer, protects the substrate from heating and prevents fusion with the thermal head. It is desirable to provide a heat resistant slipping layer for the purpose of improving running performance, preventing blocking between the back surface and the color material layer surface, and the like. It is formed from a fluororesin, a silicone resin, a reaction product of a polyvinyl butyral resin and an isocyanate resin, a curable silicone oil, a curable silicone wax, or the like. In addition, it is possible to further improve the lubricity by adding a phosphate ester-based surfactant or a filler such as talc or mica to the lubrication layer.

The dye constituting the sublimation transfer ink layer of the sublimation transfer sheet of the present invention is a dye that melts, diffuses, or sublimates by heat, and any of the dyes used in conventionally known sublimation transfer sheets can be used. is there.
Examples of such dyes include methine series such as diarylmethane series and thiazole series, indoaniline, acetophenone azomethine, azomethine series typified by imidazole azomethine, pyridone azomethine, xanthene series, oxazine series, and cyano typified by dicyanostyrene. Examples include methylene-based, azine-based, thiazine-based, benzeneazo-based, pyridoneazo, isothiazoleazo, imidazoleazo, pyrroleazo, disazo, triazoleazo and other azo-based, naphthoquinone-based, anthraquinone-based, quinophthalone-based, rhodamine-lactam-based and the like.

As a specific dye,
C. I. (Color Index) Disperse Yellow 3, 7, 23, 51, 54, 60, 79, 141, etc.
C. I. (Color Index) Disperse Blue 14, 19, 24, 26, 56, 287, 301, 354, etc.
C. I. (Color Index) Disper Thread 1, 59, 60, 73, 135, 167, etc. C.I. I. (Color Index) Disperse Violet 4, 1326, 31, 36, 56 etc. C.I. I. (Color Index) Disperse Orange 149, etc.
C. I. (Color Index) Solvent Yellow 14, 16, 29, 56, 201 etc.
C. I. (Color Index) Solvent Blue 11, 35, 36, 49, 50, 63, 97, 105, etc.
C. I. (Color Index) Solvent Red 18, 19, 23, 24, 25, 81, 143, 182, etc.
C. I. (Color Index) Solvent Violet 13, etc., C.I. I. (Color Index) Solvent Green 3 etc., C.I. I. (Color Index) Solvent Black 3 and the like.
The dye in the dye layer is preferably blended in an amount of 5 to 90% by weight, more preferably 10 to 70% by weight, based on all components constituting the dye layer.

  Such a dye layer is prepared by adding the dye, binder resin, and other optional components to an appropriate solvent, and dissolving or dispersing to prepare a dye layer forming ink, which is applied onto the substrate film and dried. Form. The thickness of the dye layer thus formed is preferably 0.1 to 5.0 μm, more preferably 0.3 to 2.0 μm.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these.

(Examples 1-13, Comparative Examples 1-16)
(Production of image receiving sheet)
An unstretched polypropylene film (Toyobo Co., Ltd. pyrene film-CTP1128; thickness: 30 μm) is bonded to urethane on an A-2 coat (thickness: 165 μm) manufactured by Mitsubishi Paper Industries, Ltd. as a base sheet. The agent was dry laminated using a coating amount of 5 g / m ² and laminated.
Further, a coating solution for forming a receiving layer having each composition shown in Table 1 (the unit of the numerical values shown in Table 1 is “parts by weight”) is applied onto the unstretched polypropylene film in an application amount of 5.0 g / m. Then, coating was performed using a Mayer bar so as to be ² , followed by drying to form a receiving layer, thereby preparing an image receiving sheet.

(Transferability)
Each image-receiving sheet obtained in each example and each comparative example was cut into a size of 100 × 140 mm. The sublimation transfer ribbon for the printer was set in a Sony sublimation thermal transfer printer CVP-G7, and gradation printing of 32 gradations was performed on each of the image receiving sheets, and the image quality unevenness was visually evaluated. The evaluation criteria were as follows. The results are shown in Table 2. In the evaluation, it is assumed that the region from the lighter density to the darker region is shifted from the first gradation to the 32nd gradation.
Further, the optical reflection density of one gradation was measured with Macbeth RD-918 (manufactured by Gretag Macbeth).
<Evaluation criteria (print quality)>
A: There was no unevenness in all gradations.
○: There was some unevenness in the 1st to 2nd gradations, but there was no other gradation.
X: Unevenness was observed after 3 gradations.
<Evaluation criteria (optical reflection density>
○: 2.0 or more Δ: 1.7 or more and less than 2.0 ×: less than 1.7

(Silentness during printing)
Using the printer and the transfer ribbon, N = 10 people confirmed and evaluated the peeling sound when printing a solid black with yellow, magenta and cyan superimposed at the maximum energy. The evaluation criteria were as follows. The results are shown in Table 2.
<Evaluation criteria>
A: I felt that everyone was not interested.
○: I felt that 80% of the people were not worried.
X: I felt that more than 80% of people were interested.
XX: The image receiving sheet and the sublimation transfer sheet were adhered.

(Environmental printing characteristics: high temperature and high humidity)
The quietness at the time of printing was evaluated under the same conditions and evaluation criteria except that the evaluation was performed in an environment of a temperature of 60 ° C. and a humidity of 85%. The results are shown in Table 2.
(Environmental printing characteristics: low temperature, low humidity)
The quietness during printing was evaluated under the same conditions and evaluation criteria except that the evaluation was performed in an environment of a temperature of 0 ° C. and a humidity of 5%. The results are shown in Table 2.

(Print wrinkles, surface scratches)
The solid black portion printed in the above-described quietness test during printing was visually observed to evaluate printing wrinkles. The evaluation criteria were as follows. The results are shown in Table 3.
<Evaluation criteria>
○: A portion that could be judged as a print wrinkle was not observed.
X: Print wrinkles and portions that could be judged as surface scratches were observed.

(Light resistance test)
In the samples of Examples and Comparative Examples prepared for the transferability test, irradiation was performed for 96 hours with a xenon fademeter (Ci-35A, manufactured by Atlas Co., Ltd.) for a step in which the optical reflection density before irradiation of cyan was near 1.0. The optical density residual ratio before and after was evaluated.
○: Residual rate is 85% or more Δ: Residual rate is 70% or more and less than 85% ×: Residual rate is less than 70%

(Examples 14 to 26, Comparative Examples 17 to 28)
(Preparation of thermal transfer sheet)
A coating solution having the following composition was applied to one surface of a 6 μm thick polyester film using a gravure coater and dried to form a heat resistant slipping layer.
(Heat resistant slipping layer coating solution)
HR15ET (polyamideimide resin manufactured by Toyobo Co., Ltd.) 3.0 parts
HR14ET (Toyobo Polyamideimide silicone resin) 5.0 parts
FP-100 (Phosphononitrile acid phenyl ester manufactured by Fushimi Pharmaceutical) 0.2 parts Methanol 50 parts
n-butanol 10 parts xylene 10 parts toluene 50 parts

Next, the composition shown in Table 3 (the unit of numerical values shown in Table 3 is “parts by weight”) so that VP-standard surface-sequential specifications can be printed on the surface opposite to the surface provided with the heat-resistant slip layer. there.) and the following cyan dye, applied by a gravure coater so as magenta dye, and a yellow dye colors of the coating liquid, respectively, the dry 1.0 g / cm ^2, and dried. The cyan dye, magenta dye, yellow dye, and their blending amounts are as follows.
(Cyan dye)
Kayaset Blue 714 (Nippon Kayaku Co., Ltd.) 10.0 parts

(Magenta dye)
MS Red G (Mitsui Chemicals) 5.2 parts
Macrolex Red Violet R (Bayer) 2.8 parts

(Yellow dye)
Foron Brilliant Yellow S-6 GL (Clariant) 11.0 parts

(Transferability)
Each image-receiving sheet obtained in Example 1 was cut into a size of 100 × 140 mm. The sublimation transfer sheets obtained in the examples and comparative examples are set in the form of sublimation transfer ribbons so that they can be set on the Sony sublimation thermal transfer printer CVP-G7. Printing was performed, and image quality unevenness was visually evaluated. The evaluation criteria were as follows. The results are shown in Table 2. In the evaluation, it is assumed that the region from the lighter density to the darker region is shifted from the first gradation to the 32nd gradation.
Further, the optical reflection density of one gradation was measured with Macbeth RD-918 (manufactured by Gretag Macbeth).
<Evaluation criteria (print quality)>
A: There was no unevenness in all gradations.
○: There was some unevenness in the 1st to 2nd gradations, but there was no other gradation.
X: Unevenness was observed after 3 gradations.
<Evaluation criteria (optical reflection density>
○: 2.0 or more Δ: 1.7 or more and less than 2.0 ×: less than 1.7

(Silentness during printing)
Using the above-described printer and the transfer ribbons of Examples and Comparative Examples, the peeling sound when printing a black solid on which yellow, magenta, and cyan were superimposed with the maximum energy on the image receiving sheet obtained in Example 1 was N = 10. Confirmed and evaluated by human. The evaluation criteria were as follows. The results are shown in Table 2.
<Evaluation criteria>
A: I felt that everyone was not interested.
○: I felt that 80% of the people were not worried.
X: I felt that more than 80% of people were interested.
XX: The image receiving sheet and the sublimation transfer sheet were adhered.

(Environmental printing characteristics: high temperature and high humidity)
The quietness at the time of printing was evaluated under the same conditions and evaluation criteria except that the evaluation was performed in an environment of a temperature of 60 ° C. and a humidity of 85%. The results are shown in Table 2.
(Environmental printing characteristics: low temperature, low humidity)
The quietness during printing was evaluated under the same conditions and evaluation criteria except that the evaluation was performed in an environment of a temperature of 0 ° C. and a humidity of 5%. The results are shown in Table 2.

(Print wrinkles, surface scratches)
The solid black portion printed in the above-described quietness test during printing was visually observed to evaluate printing wrinkles. The evaluation criteria were as follows. The results are shown in Table 3.
<Evaluation criteria>
○: A portion that could be judged as a print wrinkle was not observed.
X: Print wrinkles and portions that could be judged as surface scratches were observed.

(Light resistance test)
In the samples of Examples and Comparative Examples prepared by the transferability test, the step of the optical reflection density before irradiation in the cyan color near 1.0 is 96 hours with a xenon fade meter (Ci-35A, manufactured by Atlas). The optical density residual ratio before and after irradiation was evaluated.
○: Residual rate is 85% or more Δ: Residual rate is 70% or more and less than 85% ×: Residual rate is less than 70%

Claims (3)

  A sublimation transfer image-receiving sheet having a receiving layer on a substrate, wherein the binder resin of the receiving layer has a glass transition temperature of 30 ° C to 75 ° C and a glass transition temperature of 100 ° C to 150 ° C. A sublimation transfer image-receiving sheet comprising a mixed resin with a certain cellulose acetate butyrate, wherein the cellulose acetate butyrate is mixed at a ratio of 10 to 100 parts by weight with respect to 100 parts by weight of the polyester resin.   A sublimation transfer sheet having a sublimation transfer ink layer comprising a dye and a binder resin on a substrate, wherein the binder resin includes a polyvinyl acetal resin containing a polyvinyl butyral resin having a glass transition temperature of 60 ° C. or higher and 100 ° C. or lower. A ratio of 10 to 100 parts by weight of cellulose acetate butyrate with respect to 100 parts by weight of polyvinyl acetal resin comprising a mixed resin with cellulose acetate butyrate having a glass transition temperature of 100 ° C. or higher and 150 ° C. or lower. Sublimation transfer sheet characterized by being mixed in A sublimation transfer sheet having a sublimation transfer ink layer comprising a dye and a binder resin on a substrate and a sublimation transfer image receiving sheet having a receiving layer on the substrate, and heating the ink layer of the sublimation transfer sheet A sublimation transfer recording set used for sublimation transfer in which the dye of the layer is vaporized or sublimated and recorded on the receiving layer of the sublimation transfer image receiving sheet opposed to the sublimation transfer sheet, wherein the sublimation transfer sheet is claimed in claim 2. 2. A sublimation transfer recording set according to claim 1, wherein the sublimation transfer image receiving sheet is the sublimation transfer image receiving sheet according to claim 1.