JP3217827B2 - Receiving layer transfer sheet, composite thermal transfer sheet, and image forming method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receptor layer transfer sheet for transferring a receptor layer to a material to be transferred by a thermal head or the like, a composite thermal transfer sheet including the receptor layer, and an image forming method. And a composite heat transfer sheet capable of forming a color image.

[0002]

2. Description of the Related Art Various thermal transfer methods are known in the art. Among them, a sublimable dye is used as a recording agent, and this is carried on a base film such as paper or plastic film to form a thermal transfer sheet. There have been proposed methods of forming various full-color images on an image receiving sheet such as paper or plastic film provided with a layer. In this case, a thermal head of a printer is used as a heating means, and a large number of color dots of three or four colors are transferred to the image receiving sheet by heating for a very short time, and a full-color image of the original is formed by the multicolor dots. That is to reproduce.

However, transfer materials on which images can be formed by the above-described method are limited to dye-dyeable plastic sheets or papers provided with a dye-receiving layer in advance. There is a problem that cannot be formed. Of course, it is possible to form an image even on ordinary plain paper if the receiving layer is formed on the surface thereof, but this is generally costly. For example, postcards, memos, stationery, reports It is difficult to apply to a general ready-made transfer receiving material such as paper. As a method for solving such problems, when an image is to be formed on a ready-made transfer receiving material such as plain paper, a method for easily forming a dye receiving layer only on a necessary portion thereof is a receiving layer transfer sheet. Is known (for example,
JP-A-62-264994). As a method for further simplifying the operation, yellow, cyan, magenta and, if necessary, black dye layers are sequentially formed on the surface of the long base film, and a transfer receiving layer is further formed on the same base film surface. There is known a composite thermal transfer sheet in which a receiving layer is first transferred to an image receiving sheet, and then a dye of each color is transferred to the receiving layer to form a full-color image, and further a protection for protecting the formed dye image. A composite thermal transfer sheet further provided with layers in a sequential manner has also been proposed.

[0004]

[Problems to be solved by the invention]
When using the receiving layer transfer sheet as described above, there are few problems in the case of processed paper with a smooth surface, but in the case of plain paper, postcards, and other papers with coarse meshes, fibers are exposed on the surface and Due to lack of smoothness, transfer of the receiving layer is not performed uniformly,
Therefore, there is a problem that white spots or chipping occur in the image formed on the receiving layer, and a high quality image cannot be obtained. As a method for solving these problems, it is conceivable to form a thick receiving layer and transfer it. In this case,
Insufficient transferability and foil breakability of the receiving layer, and insufficient cushioning due to the relatively hard receiving layer, resulting in uneven heat transfer from the thermal head through the thermal transfer sheet. Similarly, there is a problem that a high quality image cannot be obtained. Further, there is a problem that heat transmitted to the receiving layer is easily diffused, and the energy efficiency of the thermal head is low.
Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to form a high-quality and high-density image with no white spots or chips on rough paper having a non-smooth surface with good thermal energy efficiency. And a composite thermal transfer sheet, and an image forming method.

[0005]

The above object is achieved by the present invention described below. That is, the present invention provides a receptor layer transfer sheet comprising a transfer resin layer having at least a dye receiving layer, an intermediate layer, and an adhesive layer laminated on one surface of a base film. 50% hollow volume
A receiving layer transfer sheet comprising the above hollow capsule, a dye layer of one or more colors and at least a dye receiving layer, an intermediate layer and an adhesive layer are laminated on one surface of a long base film. A composite thermal transfer sheet, wherein a transferable resin layer is provided face-sequentially, and the transferable resin layer includes a hollow capsule having a volume hollow ratio of 50% or more, and an image forming method using the composite thermal transfer sheet. is there.

[0006]

By incorporating hollow capsules having a volume hollow ratio of at least 50% in the transfer resin layer containing at least the dye receiving layer, it is possible to impart good cushioning and heat insulation to the transferred dye receiving layer. As a result, it is possible to form a high-quality and high-density image without white spots or chippings with good thermal energy efficiency.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail with reference to preferred embodiments. One example of the receiving layer transfer sheet of the present invention is a transfer sheet in which at least a dye receiving layer 3, an intermediate layer 7, and an adhesive layer 4 are laminated on one surface of a base film 1, as schematically shown in FIG. In the transfer layer receiving sheet provided with the conductive resin layer A, the transferable resin layer A includes a hollow capsule having a volume hollow ratio of 50% or more. The composite thermal transfer sheet of the present invention has a dye layer 5 of one color or a plurality of colors, for example, yellow (5Y), magenta, on one surface of a long base film 1, as schematically shown in FIG. (5M), cyan (5C) and, if necessary, black (Bk) (not shown) and the transferable resin layer A containing the same dye-receiving layer as in FIG. It is characterized by being provided in. Incidentally, reference numeral 6 in the figure denotes a back slip layer.

As the substrate film used in the present invention, the same substrate film as used in the conventional thermal transfer sheet can be used as it is, and other substrates can be used without any particular limitation. Specific examples of preferred base films include, for example, glass paper, condenser paper, tissue paper such as paraffin paper, polyester, polypropylene, cellophane, polycarbonate, cellulose acetate, polyethylene, polyvinyl chloride, polystyrene, nylon, polyimide, and polyvinylidene chloride. And a plastic such as an ionomer, or a base film in which these are combined with the paper. The thickness of the base film can be appropriately changed depending on the material so that the strength and heat resistance are appropriate, but the thickness is
Preferably, it is 3 to 100 μm.

[0009] The present invention is, in the case of the embodiment shown in Figure 1, substantially entirely formed of transferable resin layer A containing the same dye-receiving layer 3 and below the above substrate such on the film I do.
In the case where the present invention is the embodiment shown in FIG. 2, the dye layer 5, the transfer receiving layer and, if necessary, the transfer protective layer B are provided on the surface of the continuum of the base film as described above. Formed. The dye layer 5 is a layer in which a dye is supported by an arbitrary binder resin. As the dye to be used, any dye conventionally used in a thermal transfer sheet can be effectively used in the present invention, and is not particularly limited. For example, some preferred dyes include, as red dyes, MS Red G, Ma
crolex Red Violet R, Ceres Red7B, Samaron Red HBS
L, Resolin RedF3BS, etc., and as the yellow dye, Holon Brilliant Yellow 6GL, PTY-52, Macrolex Yellow 6G, etc., and as the blue dye, Kayaset Blue 714, Waxolin Blue AP-FW,
Holon Brilliant Blue SR, MS Blue 100 and the like.

As the binder resin for supporting the above-mentioned dye, any of conventionally known binder resins can be used. Preferred examples thereof include ethylcellulose, hydroxyethylcellulose, ethylhydroxycellulose, hydroxypropylcellulose, methylcellulose and acetate. Cellulose resins such as cellulose and cellulose acetate butyrate,
Polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal, polyvinyl pyrrolidone, vinyl resins such as polyacrylamide, polyester and the like, among these, cellulose,
Acetal type, butyral type, polyester type and the like are preferred from the viewpoint of heat resistance, dye transferability and the like.

The dye layer may further contain, if necessary, various conventionally known additives. Such a dye layer,
Preferably, the above-mentioned sublimable dye, binder resin and other optional components are added to an appropriate solvent to dissolve or disperse each component to prepare a dye layer-forming paint or ink. To form a film by applying and drying the film sequentially. The dye layer thus formed has a thickness of 0.2-5.
0 μm, preferably about 0.4 to 2.0 μm, and the sublimable dye in the dye layer is 5 to 5 weight of the dye layer.
Suitably it is present in an amount of 90% by weight, preferably 10-70% by weight. The dye receiving layer 3 formed on the surface of the base film 1 is for receiving the sublimable dye transferred from the thermal transfer sheet after transferring to an arbitrary image receiving sheet and maintaining the formed image. . The dye receiving layer is provided on the dye layer in a plane-sequential manner. The relationship with the dye layer is not particularly limited. For example, as shown in FIG.
The order of Y → M → C → Bk → protective layer is generally, but not limited to. The dyes of each hue are usually provided on the same area, but the receiving layer is required to be transferred twice or more depending on the type of the material to be transferred and the durability required for the image. Therefore, it can be formed in a larger area.

Prior to the formation of the receiving layer, it is preferable to form a release layer 2 on the surface of the base film. Such release layers include waxes, silicone wax, silicone resin,
It is formed from a release agent such as a fluorine resin or an acrylic resin. The formation method may be the same as the formation method of the receiving layer, and the thickness thereof is set to 0.1.
About 5 to 5 μm is sufficient. If a matte receiving layer is desired after transfer, the release layer may be formed into a matte surface by incorporating various particles in the release layer or by using a base film having a matte surface on the release layer side surface. I can do it . Needless to say, when the base film has an appropriate peeling property, the release layer need not be formed. As shown in FIG. 1, the transferable resin layer A including at least the dye receiving layer 3 formed on the surface of the base film is formed of an intermediate layer or a barrier layer (hereinafter simply referred to as an intermediate layer 7) and a heat-sensitive adhesive layer 4
It is only necessary that at least one of these layers contains a hollow capsule having a volume hollow ratio of 50% or more.

The dye receiving layer 3 is for receiving the sublimable dye transferred from the thermal transfer sheet after transferring the receiving layer to an arbitrary material to be transferred, and for maintaining the formed image. Examples of the resin for forming the dye receiving layer include polyolefin resins such as polypropylene, halogenated polymers such as polyvinyl chloride and polyvinylidene chloride, vinyl polymers such as polyvinyl acetate and polyacrylester, polyethylene terephthalate, and poly (ethylene terephthalate). Polyester resins such as butylene terephthalate, polystyrene resins, polyamide resins, copolymer resins of olefins such as ethylene and propylene and other vinyl monomers,
Examples thereof include cellulose resins such as ionomers and cellulose diacetates, and polycarbonates. Particularly preferred are vinyl resins and polyester resins.

Preferred releasing agents to be used by mixing with the above resin include silicone oil, phosphate ester surfactants, fluorine surfactants, etc., but silicone oil is preferred. As the silicone oil, a modified silicone oil such as epoxy-modified, alkyl-modified, amino-modified, carboxyl-modified, alcohol-modified, fluorine-modified, alkylaralkyl-polyether-modified, epoxy / polyether-modified, or polyether-modified is preferred. One or more release agents are used. or,
The amount of the release agent to be added is preferably 0.5 to 30 parts by weight based on 100 parts by weight of the resin for forming the dye receiving layer. If the addition amount is not satisfied, problems such as fusion of the thermal transfer sheet and the dye receiving layer or reduction in printing sensitivity may occur. By adding such a releasing agent to the dye receiving layer, the releasing agent bleeds out on the surface of the receiving layer after transfer to form a releasing layer.

The receiving layer 3 is formed by dissolving the above-mentioned resin on one side of the above-mentioned base film and adding necessary additives such as a release agent to an appropriate organic solvent, or It is formed by applying and drying a dispersion dispersed in water or water by a forming means such as a gravure printing method, a screen printing method, or a reverse roll coating method using a gravure plate. In the formation of the dye receiving layer, a filler such as kaolin clay, calcium carbonate, or fine powdered silica can be added for the purpose of improving the foil cutting of the receiving layer. The dye receiving layer formed as described above may have any thickness, but generally has a thickness of 1 to 10 μm. Further, such a dye receiving layer is preferably a continuous coating, but may be formed as a discontinuous coating using a resin emulsion or a resin dispersion.

Further, an intermediate layer 7 is formed on the surface of the receiving layer 3. When the above-mentioned hollow capsule is contained in the adhesive layer 4, the intermediate layer 7 prevents the occurrence of irregularities on the surface of the receiving layer 3 due to the hollow capsule after the transfer of the receiving layer 3 and the damage of the receiving layer due to the burst of the hollow capsule. It also acts to prevent the release agent added to the receiving layer from migrating to the adhesive layer 4 to prevent a decrease in the adhesiveness of the adhesive layer. It is preferred to be formed from a resin having high elasticity. The intermediate layer 7 is, for example, a polyamide resin,
By applying and drying a solution of a resin having good coatability such as an acrylic resin, a vinyl chloride resin, an ethylene-vinyl acetate copolymer resin, a vinyl chloride-vinyl acetate copolymer resin, a polyester resin, etc. ~ 5 μm
It is formed to a thickness of about. Further, the resin may be at least partially crosslinked, or may have an improved strength such as an electron beam-curable or ultraviolet-curable resin. Of course, a hollow capsule can be included in this intermediate layer. The adhesive layer 4 formed on the intermediate layer 7 has a good adhesive property when heated, such as a polyamide resin, an epoxy resin, an acrylic resin, a vinyl chloride resin, a vinyl chloride-vinyl acetate copolymer resin, and a polyester resin. By applying and drying a solution of the resin, it is preferably formed to a thickness of about 0.5 to 10 μm.

The hollow capsule to be contained in at least one of the dye-receiving layer 3, the intermediate layer 7, and the adhesive layer 4 is made of, for example, a low-boiling liquid such as butane or pentane by using a resin such as polyvinylidene chloride or polyacrylonitrile. A known foaming agent such as a microballoon which is microencapsulated in the above is foamed, and a microballoon or the like coated with a white pigment can also be used effectively. Particularly preferred foaming agents are the above-mentioned microballoons which can be foamed at a relatively low temperature, the foams thereof, and microballoons coated with a white pigment. For example, Matsumoto Yushi Seiyaku Co., Ltd.
Available in various grades, all of which can be used in the present invention. These foaming agents are added to the transferable resin layer in an unfoamed state, and finally,
It is sufficient that the resin is foamed into a hollow capsule in the state of the thermal transfer image-receiving sheet, or it may be added to the resin layer in a state of foaming in advance. It is also effective to mix the foaming agent in the resin layer in an unfoamed state, leave it in an unfoamed state without performing a heat treatment, and heat-foam with the heat of a thermal head during image formation to encapsulate. Volumetric hollow rate of the hollow capsule is required to be 50% or more, sufficient cushioning and heat insulating property can not be obtained in this following hollow percentage by volume. The most favorable results are obtained when the volume hollow ratio is 90% or more, for example, 90 to 99.0%. The particle size of these hollow capsules is preferably from 0.2 to 20 μm. If the particle size is less than 0.2 μm, the cushioning and heat insulating properties are similarly insufficient. Is difficult to obtain, which is not preferable in image formation.
Further, the thickness of the partition wall of the hollow capsule is preferably in the range of 0.05 to 3 μm. If the thickness is too thin, the capsule is easily broken at the time of production or image formation, while if too thick, the cushioning property is poor.

The hollow capsule is preferably included in the adhesive layer for the above-mentioned reason. When the adhesive layer includes the hollow capsule, the Tg of the adhesive is -20 to +7.
The temperature is preferably 0 ° C., and by using such an adhesive, the cushioning properties of the hollow capsule can be fully utilized. The thickness of the layer containing the hollow capsule is 3 to 30.
is preferably [mu] m, is too thin can not be obtained sufficiently cushion and heat insulating properties, whereas, easily scratched-out attached to the surface of the receptive layer is too thick, causing degradation or poor printing of transferability. The hollow ratio of the layer containing the hollow capsule is 10 to 90%.
When the content is less than 10%, sufficient cushioning and heat insulating properties cannot be obtained, while when it exceeds 90%, the strength of the layer becomes unsatisfactory. Further, in the present invention, by including a filler, a white pigment, a fluorescent whitening agent, and the like in at least one of the above layers, a receiving layer having excellent whiteness regardless of the ground color of the material to be transferred is provided. I can do it. In the receiving layer transfer sheet of the present invention described above, an embodiment in which the layer containing the hollow capsule is made of a resin, a hollow capsule, and a cavity is also included. Here, the term “cavity” means, for example, a minute cell generated by a decomposable foaming agent. By making the hollow capsule and the cavity coexist, the cushioning property can be further enhanced. However, if the ratio of the cavities is too large, the film strength is reduced. Therefore, it is desirable to appropriately adjust the ratio between the hollow capsule and the cavities.

In the present invention, if necessary, a transparent or translucent transferable protective layer B is formed on the dye layer and the transferable receiving layer one by one. Examples of the resin for forming the protective layer B include polyolefin resins such as polypropylene, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, halogenated polymers such as polyvinylidene chloride, polyvinyl acetate, and polyacrylester. Such as vinyl polymers such as polyethylene terephthalate and polybutylene terephthalate, polyester resins such as polybutylene terephthalate, polystyrene resins, polyamide resins, copolymer resins of olefins such as ethylene and propylene with other vinyl monomers, ionomers, cellulose diacetates, etc. Cellulose-based resins, polycarbonates and the like can be mentioned, and particularly preferred are vinyl-based resins and polyester-based resins.

Further, it is preferable to provide an adhesive layer on the surface of the protective layer in order to improve the transferability of these layers. These adhesive layers, for example, polyamide resin,
Acrylic resin, vinyl chloride resin, vinyl chloride-vinyl acetate copolymer resin, polyester resin, etc., by applying and drying a solution of a resin having good adhesiveness when heated, preferably to a thickness of about 0.5 to 10 μm. Form. still,
In the case of the transferable protective layer, no bubbles and no intermediate layer are required.
The method for forming the layer may be in accordance with the formation of the transferable receiving layer. The image receiving sheet for transferring the receiving layer and forming an image using the receiving layer transfer sheet as described above is not particularly limited. For example, any of plain paper, woodfree paper, tracing paper, plastic film, and the like can be used. It may be a sheet, and may be in any form such as a card, a postcard, a passport, a stationery, a report sheet, a notebook, a catalog, etc., and is particularly applicable to plain paper having a rough surface and rough paper. The transfer method of the receiving layer and the protective layer may be a general printer equipped with a thermal head for thermal transfer, a hot stamper for a transfer foil, a heat roll, or the like, which can be heated to a temperature at which the receiving layer or the adhesive layer is activated. May be used. As a method for forming an image, any of conventionally known means can be used. For example, by controlling the recording time by a recording device such as a thermal printer (for example, a video printer VY-100 manufactured by Hitachi, Ltd.), By applying heat energy of about 100 mJ / mm ² , the intended purpose can be sufficiently achieved.

[0021]

Next, the present invention will be described more specifically with reference to examples and comparative examples. In the following description, parts and% are based on weight unless otherwise specified. <Example 1> A heat-resistant lubricating layer was formed on the back surface, and the other surface was subjected to a release treatment. The release treatment surface of a 4.5 μm-thick polyethylene terephthalate film (manufactured by Toray Industries, Ltd.) was 30 cm wide and 90 c apart.
With m, the receiving layer, the intermediate layer and the adhesive layer were formed to overlap. The receiving layer is formed by applying a coating liquid for a receiving layer having the following composition by a bar coater at a rate of 3.0 g / m ² when dried, temporarily drying with a drier, and drying in an oven at 100 ° C. for 30 minutes. The intermediate layer was formed by applying and drying at a rate of 1.0 g / m ² at the time of drying using the following coating liquid in the same manner.
The adhesive layer was formed by applying and drying at a rate of 3.0 g / m ² at the time of drying using the following adhesive solution in the same manner. The hollow ratio of this adhesive layer was 21%.

(Composition of Receptive Layer Coating Solution) Vinyl chloride / vinyl acetate copolymer resin (1000 GKT, manufactured by Denki Kagaku Kogyo) 100 parts Amino-modified silicone (X-22-343, Shin-Etsu Chemical Co., Ltd.) 3 parts Epoxy-modified silicone (KF-393, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 500 parts (coating liquid composition for intermediate layer) Polymethyl methacrylate resin (BR-106, manufactured by Mitsubishi Rayon) 100 parts Methyl ethyl ketone / 500 parts of toluene (1/1 by weight)

(Coating solution composition for adhesive layer) Polymethyl methacrylate resin (BR-106, manufactured by Mitsubishi Rayon) 100 parts Hollow capsule (SX863 (A), manufactured by Nippon Synthetic Rubber, hollow capsule ratio 70%, particle size 0) 0.4 μm, partition wall thickness 0.13 μm) 10 parts Titanium oxide (TCA-888, manufactured by Tochem Products) 100 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 500 parts Subsequently, an ink for a dye layer having the following composition was prepared. One not a respective width 30cm dry coating amount on the surface receiving layer of the substrate film is not formed, to obtain a composite thermal transfer sheet of coating and drying the present invention by a gravure coater so as to become 1.0 g / m ^2. (Ink composition for dye layer) Disperse dye (Kayaset Blue 714, manufactured by Nippon Kayaku Co., Ltd.) 4.0 parts Ethyl hydroxycellulose (manufactured by Hercules) 5.0 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 80 0.0 part Dioxane 10.0 parts In the same manner, the yellow thermal transfer sheet was treated with a yellow disperse dye (Macrolex Yellow 6G, CIDisper, manufactured by Bayer AG).
se Yellow 201) and a magenta thermal transfer sheet was formed using a magenta disperse dye (CIDisperse Red 60).

Example 2 15 parts of microcapsules (F-30D, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) were used in place of the foaming agent in Example 1, and the coating for the adhesive layer was carried out in the same manner as in Example 1 except for the above. Apply the working fluid and then 1
Heat drying and foaming were performed at 20 ° C. for 2 minutes to form a receiving layer transfer sheet of the present invention. The hollow ratio of the hollow capsule in this adhesive layer is 99%, the particle diameter is 25 μm, and the partition wall thickness is 0.1 μm.
The thickness of the adhesive layer after foaming was 35 μm, and the hollow ratio of the adhesive layer was 70%.

Example 3 Instead of the foaming agent in Example 1, titanium-coated microcapsules (F-30D / Matsumoto Yushi Seiyaku Co., Ltd.)
The receiving layer transfer sheet of the present invention was formed in the same manner as in Example 1 except that 15 parts of TiO ₂ ) was blended.

Example 4 The procedure of Example 1 was repeated, except that a transferable protective layer was further formed sequentially from a 20% methyl ethyl ketone solution of an acrylic resin (BR-85, manufactured by Mitsubishi Rayon Co., Ltd.). Thus, a receiving layer transfer sheet of the present invention was obtained.

Comparative Example 1 The procedure of Example 1 was repeated, except that no bubbles were contained.

<Example 5 > The receiving layer surface of the composite thermal transfer sheets of Examples 1 to 4 and Comparative Example 1 were superimposed on a postcard, and an output of 1 W / dot and a pulse width of 0.3 to 3 were obtained using a thermal head. 0.45mse
c. Transfer the receiving layer over the entire surface under the condition of a dot density of 3 dots / mm, and then print a yellow signal obtained by color separation of the original on the surface of the receiving layer to obtain a yellow dye layer. To form a yellow image. Further, a magenta dye is similarly transferred to the image area obtained above by a magenta signal, and a cyan dye is further transferred by a similar cyan signal to form a full-color image. Further, the protective layer (Example 4 ) is transferred to the image surface. Was. In the case of the present invention, the image quality of the obtained image was a high-quality image with no white spots or chips, but was an image with many white spots or chips when the composite thermal transfer sheet of the comparative example was used. Was.

[0029]

According to the present invention as described above, the transfer resin layer including at least the dye receiving layer contains hollow capsules having a volume hollow ratio of 50% or more, so that the transferred dye receiving layer has good cushioning properties. And a heat insulating property, and as a result, it is possible to form a high-quality and high-density image without white spots or chipping with good thermal energy efficiency.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating a cross section of a receiving layer transfer sheet of the present invention.

FIG. 2 is a diagram schematically illustrating a cross section of the composite thermal transfer sheet of the present invention.

[Explanation of symbols]

 1: Base film 2: Release layer 3: Dye receiving layer 4: Adhesive layer 5: Dye layer 6: Heat-resistant lubricating layer 7: Intermediate layer A: Transferable resin layer including dye receiving layer B: Transferable protective layer

Continuation of the front page (56) References JP-A-62-264994 (JP, A) JP-A-4-83683 (JP, A) JP-A-64-27996 (JP, A) JP-A-1-160682 (JP) JP-A-2-167777 (JP, A) JP-A-64-87390 (JP, A) JP-A-63-87286 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB Name) B41M 5/38-5/40

Claims (12)

(57) [Claims] 1. A receiving layer transfer sheet comprising a transfer film on which at least a dye receiving layer, an intermediate layer and an adhesive layer are laminated on one surface of a substrate film, wherein the transferable resin layer comprises: A receiving layer transfer sheet comprising a hollow capsule having a volume hollow ratio of 50% or more. 2. A long base film is provided with a dye layer of one or more colors and a transferable resin layer on which at least a dye receiving layer, an intermediate layer and an adhesive layer are laminated on one surface of the long base film. A composite thermal transfer sheet, wherein the transferable resin layer includes a hollow capsule having a volume hollow ratio of 50% or more. 3. The transfer sheet according to claim 1, wherein the hollow capsule has a volume hollow ratio of 90% or more. 4. A hollow capsule having a particle size of 0.2 to 20 μm.
The receiving layer transfer sheet according to claim 1, wherein 5. The thickness of the partition wall of the hollow capsule is from 0.05 to 0.05.
2. The receiving layer transfer sheet according to claim 1, which has a thickness of 3 μm. 6. The resin of the layer containing the hollow capsule has a Tg of-
The receiving layer transfer sheet according to claim 1, which is at least 20 and at most + 70 ° C. 7. The thickness of the layer containing the hollow capsule is from 3 to 30.
2. The receiving layer transfer sheet according to claim 1, which has a thickness of μm. 8. The layer containing a hollow capsule has a hollow ratio of 10 to 10.
The transfer sheet for a receptor layer according to claim 1, wherein the transfer rate is 90%. 9. The receiving layer transfer sheet according to claim 1, wherein the layer containing the hollow capsule comprises a resin, a capsule and a cavity. 10. The composite thermal transfer sheet according to claim 2 , wherein the transferable resin layer is white. 11. The composite thermal transfer sheet according to claim 2 , wherein at least one of the transferable resin layers contains at least one member selected from the group consisting of a white pigment, a fluorescent whitening agent, and air bubbles. 12. An image forming method using the composite thermal transfer sheet according to claim 2 , wherein a transferable resin layer and a dye image are sequentially transferred to a material to be transferred.