| 摘要 |
PURPOSE:To record an image with a high printing density by a number of times without the occurrence of wrinkle and break by specifying the Young's modulus of a thermal transfer recording medium both longitudinally and crosswise. CONSTITUTION:A line thermal head is abutted on the rear surface of a substrate of a thermal transfer recording medium. A first thermal printing is conducted to the end of the thermal transfer recording medium. After that, the medium is reversed or rewound, and second and succeeding printing actions are repeatedly conducted. The thermal transfer recording medium used for printing preferably has a Young's modulus of 1200kg/mm<2> or more both longitudinally and crosswise. In printing using a thermal transfer recording medium having a Young's modulus less than 1200kg/mm<2> both longitudinally and crosswise, a thermal deformation accumulated at every printing causes the occurrence of wrinkle at the time of winding and the break of the thermal transfer recording medium. A failure image is induced by using an expanded part for printing. |
