Dai Nippon Printing Co., Ltd.

Shino Takao

Hitoshi Saito

Shinji Kometani

Hirofumi Tomita

Yoshihiko Tamura

Hideki Usuki

Takeshi Takada

Yuji Matufuji

Yuji Matsufuji

The present invention provides a thermal transfer image receiving sheet comprising a substrate sheet and a dye receptor layer disposed on at least one surface of the substrate sheet, wherein the dye receptor layer comprises polycarbonate resin of a random copolymer having a main chain which comprises, as essential units, an unit 1 represented by the following formula 1 and an unit 2 represented by the following formula 2, or a polycarbonate resin of a homopolymer which comprises the unit 2, an amount ratio of the unit 1 being not more than 70 mol %, the polycarbonate resin having a Tg of not less than 125&deg; C. and being dissolvable in a general solvent: 

Thermal transfer image receiving sheet

Thermal transfer image-receiving sheet

Protective layer transfer sheet and print

A thermal transfer dye image-receiving sheet is provided which can form high-quality color images by a thermal transfer method. The thermal transfer dye image-receiving sheet comprises: a substrate sheet; and a dye-receptive layer provided on at least one side of the substrate sheet, the dye-receptive layer containing at least a caprolactone-modified cellulose, the cellulose comprising at least a cellulose acetate component.

Thermal transfer dye-receptive sheets and receptive layer transfer sheets

The present invention provides a thermal transfer image receiving sheet comprising a substrate sheet and a dye receptor layer disposed on at least one surface of the substrate sheet, wherein the dye receptor layer comprises polycarbonate resin of a random copolymer having a main chain which comprises, as essential units, an unit 1 represented by the following formula 1 and an unit 2 represented by the following formula 2, or a polycarbonate resin of a homopolymer which comprises the unit 2, an amount ratio of the unit 1 being not more than 70 mol %, the polycarbonate resin having a Tg of not less than 125&deg; C. and being dissolvable in a general solvent:

There is provided a protective layer transfer sheet comprising: a substrate sheet; and a thermally transferable protective layer provided on at least a part of one side of the substrate sheet, the protective layer comprising at least an aromatic polycarbonate resin which is soluble in a nonhalogenated solvent and has a glass transition temperature Tg of 80.degree. C. or above. There is also provided a print comprising a substrate having, on at least one side thereof, at least a dye image and a protective layer covering at least a part of the image, the protective layer having been formed by transfer from the above protective layer transfer sheet.

Protective layer transfer sheet

A thermal transfer image-receiving sheet comprising a substrate sheet, a dye-receptive layer provided on one surface of the substrate sheet and a dye-unreceptive layer provided on the other surface of the substrate sheet, the dye-unreceptive layer comprising a release agent which is the same as that contained in the dye-receptive layer or does not migrate to other places, for example, comprises an amino-modified silicone and an epoxy-modified silicone or a product of a reaction of both of them, or an addition-polymerizable silicone or a cured product obtained by a reaction thereof. A thermal transfer image-receiving sheet comprising a substrate sheet, a dye-receptive layer provided on one surface of the substrate sheet and a lubricious back surface layer provided on the other surface of the substrate sheet, the lubricious back surface layer being composed mainly of a binder and a nylon filler.

An image-receiving sheet for thermal transfer printing comprises a substrate, a color receptor layer formed on one surface of the substrate, and a back surface layer formed on an other surface of the substrate. The back surface layer comprises thermoplastic resin and hydrophilic porous microsilica which is obtained by a wet process and has a pore volume of from 0.2 to 3.0 ml/g. It is possible to write with any kind of writing means on the back surface layer, and a stamp can be stuck thereon. When printing information is recorded on the color receptor layer of the image-receiving sheet for thermal transfer printing, the image-receiving sheet therefor is converted into a printed material which may be used as a picture postcard.

Image-receiving sheet for thermal transfer printing and printed material

There is provided a heat transfer image-receiving sheet comprising: a substrate sheet, end a dye-receiving layer provided at least on one surface of the substrate sheet, comprising a thermoplastic resin and at least two types of cured products of modified silicones whose curing mechanisms are different. There is also provided a heat transfer image-receiving sheet comprising: a substrate sheet, a dye-receiving layer provided at least on one surface of the substrate sheet, comprising a thermoplastic resin, and a releasing layer provided on the dye-receiving layer, comprising at least two types of cured products of modified silicones whose curing mechanisms are different.

Heat transfer image-receiving sheet

There is provided a thermal transfer image-receiving sheet including a substrate sheet and an intermediate layer and a receptive layer provided in that order on at least one side of the substrate sheet, the intermediate layer being formed of at least one resin having an active hydrogen, the receptive layer including at least one thermoplastic resin and a curing agent reactive with the active hydrogen.

There is provided a thermal transfer image-receiving sheet including a substrate sheet, a whiteness-improving layer and a receptive layer provided on top of one another in that order, the whiteness-improving layer including a water-soluble polymer containing a water-soluble fluorescent brightening agent, the receptive layer including a resin soluble in an organic solvent.

A thermal transfer image-receiving sheet comprising a substrate sheet, a dye-receptive layer provided on one surface of the substrate sheet and a dye-unreceptive layer provided on the other surface of the substrate sheet, the dye-unreceptive layer comprising a composition composed mainly of at least one thermoplastic resin having at least one reactive functional group and an isocyanate compound or a chelate compound. A thermal transfer image-receiving sheet comprising a substrate sheet, a dye-receptive layer provided on one surface of the substrate sheet and a dye-unreceptive layer provided on the other surface of the substrate sheet, the dye-unreceptive layer comprising a release agent which is the same as that contained in the dye-receptive layer or does not migrate to other places, for example, comprises an amino-modified silicone and an epoxy-modified silicone or a product of a reaction of both of them, or an addition-polymerizable silicone or a cured product obtained by a reaction thereof. A thermal transfer image-receiving sheet comprising a substrate sheet, a dye-receptive layer provided on one surface of the substrate sheet and a lubricious back surface layer provided on the other surface of the substrate sheet, the lubricious back surface layer being composed mainly of a binder and a nylon filler.

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Tokyo-to, Japan

Shino Takao