| 摘要 |
PURPOSE:To enable printing speed to be easily enhanced without requiring any complicated system, by using a light as a means for generating heat in a transfer sheet. CONSTITUTION:An output from a light output device for emitting a beam 13 of laser or the like, e.g., a laser oscillator 10, is modulated and scanned on a thermal transfer sheet 11. The beam provides a minute spot of 50-10mum in size, and when it is incident on the sheet 11, it is converted into a large quantity of heat at and around the point of incidence. In the same manner as in the case of a thermal head, the heat thus generated causes transfer of a coloring material to a paper 12. Since the laser beam can be concentrated on a minute part, it is possible to raise the temperature of only that part at high speed. In addition, the heating value is determined by the intensity of the beam and power can be increased as compared with that of a conventional heating resistance, high-speed heat response is ensured. |
