| 摘要 |
PURPOSE:To make fixed information unrewritable and variable information rewritable by providing a variable recording part colored and decolored in accordance with a temperature and a fixed recording part printed by the application of a predetermined temperature. CONSTITUTION:A fixed recording part C1 is formed on a breakable recording layer 3 made of a metallized film. On the breakable recording layer 3, printing can be made by the application of a temperature higher than a heat applied to a reversible thermal recording layer 4 by a thermal head. The reversible thermal recording layer 4 provided on the top surface of the breakable recording layer 3 has properties that it is colored by the application of a predetermined color-forming temperature and decolored by the application of a predetermined decoloring temperature. On the reversible thermal recording layer 4, a variable recording part C2 is formed. In this construction, fixed information cannot be rewritten, and variable information can be rewritten. |
