Sony Corporation

Hiroaki Ogasawara

Kei Obata

Huy Sam

Masayoshi Isago

Akihiro Horii

Satoru Shinohara

Yoshinori Nakamura

A thermally sensitized sheet having excellent light resistance and weather resistance and capable of suppressing deterioration, a decrease clearness and color change of an image formed by a dye transferred to a reception layer. The thermally sensitized sheet includes a substrate 1 on which a dye reception layer 2 is formed. The dye reception layer 2 contains a compound expressed by: ##STR1##

Thermally sensitized sheet

A thermal transfer sheet having a base sheet; a thermal transfer dye layer formed on the front side of the base sheet; and a heat resisting and lubricating layer formed on the reverse side of the base sheet. Even if the thermal transfer dye layer contains an indoaniline dye, deterioration in the indoaniline dye can be prevented, the preservability of the thermal transfer can be maintained, fusion of the thermal transfer sheet to a thermal head can be prevented and smooth movement of the thermal transfer sheet is enabled. Thus, sticking which occurs during a printing operation can be prevented. The thermal transfer sheet according to the present invention has a base sheet; a thermal transfer dye layer formed on the right side of the base sheet; and a heat resisting and lubricating layer formed on the reverse side of the base sheet, wherein the thermal transfer dye layer contains an indoaniline dye, and the heat resisting and lubricating layer contains polyoxyethylene sorbitol fatty acid ester and phosphoric ester at a weight ratio of 10:1 to 1:2.

Thermal transfer sheet

The present invention provides a thermal printing sheet which enables to realize a stable low friction coefficient within a heating range by a thermal head and which has a superior preservation stability without giving an adverse affect to dye layers. The thermal printing sheet according to the present invention includes a substrate sheet 1, on one side of which are formed thermal dye layers 2 and on the other side of which is formed a heat resistant slide layer 3. The heat resistant slide layer 3 contains polyoxyalkylene sorbite fatty acid ester which exhibits a superior lubrication characteristic, enabling to obtain a low friction coefficient even under a high temperature. Moreover, the polyoxyalkylene sorbite fatty acid ester is neutral and does no adversely affect the dye layers. The heat resistant slide layer 3, in addition to the polyoxyalkylene sorbite fatty acid ester, may contain polyglycerin fatty acid ester and metallic soap.

Thermal printing sheet

The present invention is to provide a thermal transfer inksheet with excellent antistatic properties and shelf stability, which are given by using a polyvinyl acetal resin of a polyvinyl alcohol unit concentration at 12% by weight or less as the binder of the thermally resistant lubricant layer and by using a tetraammonium salt as the antistatic agent. The thermal transfer inksheet contains a substrate, a thermally transferable ink layer formed on one face of the substrate, a thermally resistant lubricant layer formed on the other face of the substrate which contains a polyvinyl acetal resin and a tetraammonium salt wherein the vinyl alcohol unit concentration in the polyvinyl acetal resin is 12% by weight or less.

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Miyagi, Japan

Hiroaki Ogasawara