Dai Nippon Printing Co., Ltd.

Takenori Omata

Taro Suzuki

Munenori Ieshige

Masamitsu Suzuki

Yoji Orimo

Katsuyuki Oshima

Tatsuya Kita

Kenichi Hirota

Naohiro Obonai

Masahiro Yuki

Kenji Sakamoto

Hidemasa Kaida

Kazushi Kimura

Shino Suzuki

A thermal transfer image receiving sheet, excellent in releasability even after printing based on a thermal transfer process is performed a plurality of times, is provided. The thermal transfer image receiving sheet has: a substrate sheet; and an image receiving layer which is formed on the substrate sheet and having a binder resin, a high molecular weight silicone, and a low molecular weight-modified silicone. A kinematic viscosity of the high molecular weight silicone is 500000 mm/s or more, and a kinematic viscosity of the low molecular weight-modified silicone ranges from 100 mm/s to 100000 mm/s.

Thermal transfer image receiving sheet, and method for manufacturing same

There is provided a thermal transfer image-receiving sheet which has none of the offset of an antistatic agent, the transfer of the antistatic agent onto a carrier roll of a thermal printer or the like, a lowering in whiteness, glossiness, and sensitivity in printing of the thermal transfer image-receiving sheet, and a remarkable lowering in coating strength under high-humidity environmental conditions and thus can realize stable and excellent antistatic properties. The thermal transfer image-receiving sheet comprises a substrate sheet and a dye-receptive layer provided on at least one side of the substrate sheet. An electrically conductive layer is provided as at least one layer between the substrate sheet and the receptive layer, or as at least one layer on the substrate sheet in its side remote from the receptive layer. The electrically conductive layer comprises electrically conductive synthetic phyllosilicate. By virtue of the incorporation of the electrically conductive synthetic phyllosilicate in the electrically conductive layer, the electrically conductive layer has good adhesion to the substrate sheet and other layers and has high glossiness, and the thermal transfer image-receiving sheet is free from a change in physical properties such as coating strength upon a change in environmental conditions and has excellent antistatic properties.

Thermal transfer image-receiving sheet

It is an object of the invention to provide a thermal transfer image receiving sheet which can enhance sensitivity by low heat conductivity and can be easily manufactured at a low cost compared with the lamination of a foaming film. In a thermal transfer image receiving sheetwherein a thermal insulation layerand a dye receiving layerare formed on a base material sheet, the thermal insulation layeris formed by extrusion-molding a resin containing at least one of a foaming agent and hollow bodies. The resin extruded at the time of forming the thermal insulation layeris inserted between the base material sheetand the base material film, and the base material sheetand the base material filmare bonded to each other via the thermal insulation layer. The dye receiving layeris formed outside of the base material film

Thermal transfer image receiving sheet and method for manufacturing the same

The present invention provides a thermal transfer image receiving sheet having a good productivity, capable of inexpensively obtaining an image with high density and high resolution. A dye receiving layer is provided on one surface side of a base material film, and a porous layer with hollow particles bonded by a binder resin provided on the other surface side, respectively. The porous layer is attached with a base material via an adhesive layer.

The present invention is first directed to a thermal transfer sheet which is not high in cost for obtaining a substrate, does not involve a problem of blocking or the like at the time of winding after coating of a backside layer onto the substrate, can eliminate the need to provide a release layer on the protective layer region, and further can enhance glossiness of a print with a protective layer. The thermal transfer sheet comprises a substrate, a dye layer of at least one color and a thermally transferable protective layer provided in a face serial manner on one side of the substrate, a protective layer provided on a part of one side of the substrate, an easy-adhesion layer provided on the whole surface of the protective layer and the substrate, the dye layer being provided on the easy-adhesion layer in its region where the protective layer is not located on the underside of the easy-adhesion layer. The second invention is directed to a thermal transfer sheet which can cope with increased printing speed in the thermal transfer, can meet demands for the provision of thermally transferred images having high density and high quality, can prevent the occurrence of abnormal transfer, cockles, etc., and can improve sensitivity in transfer at the time of printing. The thermal transfer sheet according to the second invention comprises a substrate, a heat-resistant slip layer provided on one side of the substrate, and an adhesive layer and a dye layer provided in that order on the other side of the substrate, the adhesive layer comprising a polyvinylpyrrolidone resin. By virtue of this construction, the sensitivity in transfer can be significantly improved at the time of thermal transfer, and a high-density thermally transferred image can be provided without applying high energy.

Thermal transfer sheet

There is provided a thermal transfer image-receiving sheet which can yield, on its receptive layer, a thermally transferred sublimation dye image possessing excellent resistance to hand cream, resistance to sebum, resistance to plasticizers, and resistance to fats and oil. The thermal transfer image-receiving sheet comprises: a substrate sheet; and, provided on at least one side of the substrate sheet in the following order, an intermediate layer and a dye-receptive layer, the intermediate layer comprising a resin layer comprising an inorganic pigment having an acicular crystal structure.

There is provided a thermal transfer image-receiving sheet which has dyeability high enough to realize high-speed printing and low-energy printing, permits a protective layer to be thermally transferred onto an image formed on the thermal transfer image-receiving sheet, is free from heat fusing to a thermal transfer sheet at the time of image formation on the thermal transfer image-receiving sheet, and has satisfactory separability from the thermal transfer sheet. The thermal transfer image-receiving sheet comprises: a substrate sheet; and a receptive layer provided on at least one side of the substrate sheet, said receptive layer comprising at least a combination of a cellulose ester resin (A) having a degree of acetylation of 10 to 30% with a cellulose ester resin (B) having a degree of acetylation of less than 6%, the total degree of acetylation of the cellulose ester resin (A) and the cellulose ester resin (B) being 8 to 14%, the content of hydroxyl groups in the cellulose ester resin (A) and the content of hydroxyl groups in the cellulose ester resin (B) each being not more than 6% by weight, the remaining hydroxyl groups having been esterified with an organic acid excluding acetic acid. By virtue of the above construction, the thermal transfer image-receiving sheet can realize printing of an image thereon with high dyeability at a high speed, has excellent separability from a thermal transfer sheet, is free from smudge and blurring derived from plasticizers, and permits a protective layer to be adhered onto the receptive layer.

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Tokyo-to, Japan

Takenori Omata