Dai Nippon Printing Co., Ltd.

Tomohiko Imoda

Kazuya Yoshida

Ryoji Hattori

Yoshihiro Imakura

Yasuyuki Shouji

Hiroyuki Hasegawa

Tomoko Suzuki

Daisuke Fukui

Yoshimasa Kobayashi

Hiroaki Segawa

Koichiro Kuroda

Kano Sakamoto

To provide a coating liquid for release layer with which a release layer having a small variation in the performance difference can be stably formed, to provide a method for producing a thermal transfer sheet using this coating liquid for release layer, and to provide a thermal transfer sheet having stable releasability. A thermal transfer sheet having a substrate, a release layer provided on the substrate, and a transfer layer provided on the release layer, wherein the transfer layer is provided peelably from the release layer, and the release layer contains a silsesquioxane.

Thermal transfer sheet, coating liquid for release layer, and method for producing thermal transfer sheet

To provide a coating liquid for release layer with which a release layer having a small variation in the performance difference can be stably formed, to provide a method for producing a thermal transfer sheet using this coating liquid for release layer, and to provide a thermal transfer sheet having stable releasability. A thermal transfer sheet having a substrate, a release layerprovided on the substrate, and a transfer layerprovided on the release layer, wherein the transfer layeris provided peelably from the release layer, and the release layercontains a silsesquioxane.

There is provided a thermal transfer sheet having satisfactory peelability when a transfer layer is peeled off without being affected by a peeling environment when the transfer layer is peeled off. A thermal transfer sheetincludes a substrateand a transfer layerprovided on one surface of the substrate, in which the peeling force in a stable period is in the range of 4.6 g/cm or more and 23 g/cm or less when the transfer layeris peeled off at a peeling temperature in the range of 30&#xb0; C. or more and 70&#xb0; C. or less and at a peeling angle of 90&#xb0; while the surface of the transfer layeron the side opposite to the substrateis made to serve as a peeling interface.

Thermal transfer sheet

The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet. The problem is solved by a thermal transfer sheet () in which at least a colorant layer () is layered on a substrate sheet (), wherein the colorant layer () contains a predetermined solvent, a colorant () dispersible in the predetermined solvent, a dispersant, and a binder resin, and the dispersant being one or more selected from the group consisting of polyether-based dispersants, graft type polymer dispersants, acryl-based block type polymer dispersants, urethane-based polymer dispersants and azo-based dispersants.

Thermal transfer sheet, coating liquid for colorant layer, method for manufacturing thermal transfer sheet, and image forming method

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Tokyo, Japan

Tomohiko Imoda