| 摘要 |
PROBLEM TO BE SOLVED: To realize a low coefficient of friction stably within a heating temperature range by a thermal head by adding polyoxyalkylene sorbit aliphatic ester of a specific structure to a heat-resistant lubricating layer on the opposite face to the thermal transfer dye layer of the base sheet. SOLUTION: A thermal transfer dye layer is formed on the opposite face to the photographic paper of a base sheet. On the other hand, a heat-resistant lubricating layer is formed on the opposite face to the thermal transfer dye as the face runs in contact with a thermal head. Polyoxyalkylene sorbit aliphatic ester expressed by formula (in the formula, R<1> , R<3> , R<5> , R<7> , R<9> and R<11> are a 2-10C straight chain or branched alkyl group; R<2> , R<4> , R<6> , R<8> , R<10> and R<12> are a 12-30C straight chain acryl group; 1, m, n, o, p, q and r are an integer of 0-100 excepting the case when 1, m, n, o, p, q and r are 0), is added to the heat-resistant lubricating layer. |
