| 摘要 |
PURPOSE:To allow a character to appear on a heat sensitive film for a specific time and to eliminate the need for a form for writing by using the heat sensitive film which varies in transparency with temperature and a temperature pen in combination. CONSTITUTION:Pressure sensitive rubber 16, a conductor film 17, and the heat sensitive film 18 which varies in transparency with temperature are laminated on a resistance film 1. The temperature pen 19 as a presser body, on the other hand, is heated above an ambient temperature by a power source 20. Therefore, when a character is written on the heat sensitive film 18 with the temperature pen 19, the character locus part of the heat sensitive film 18 becomes transparent and the color of the conductor film 17 appears. Consequently, the written character is seen as it is. This character disappears the specific time later by lowering the temperature of the heat sensitive film. Thus, the character appears on the heat sensitive film for the specific time to eliminate the need for a form for writing. |
