| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reversible multicolor recording medium, which can maintain clear and distinct color developing and erasing functions and recording characteristics even after a large number of times of recording and erasion. <P>SOLUTION: This recording medium is produced by separatingly/laminatingly forming recording layers 11-13, each reversibly develop color different in color tone from one another to the planar direction of a supporting board 1. The reversible multicolor recording medium 10 is produced by separatingly and independently mixing at least a color developing composition prepared by including a colorable compound with electron donability and a developer/reducer with electron acceptability in a resin and a photothermally converting composition including photothermally converting materials each absorbing infrared rays having wavelength regions different from one another as the recording layers 11-13. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
