发明名称 |
Thermoreversible recording material, thermoreversible recording medium and recording method |
摘要 |
<p>A thermoreversible recording material having its transparency changed in accordance with its thermal history, in particular the rate of cooling and the temperature to which it has been heated, comprises a matrix material and an organic compound of low molecular weight, wherein the matrix material comprises polyvinyl acetal, and the organic compound of low molecular weight comprises a saturated carboxylic acid or derivative thereof. The matrix material may further contain a material selected from a group consisting of epoxy resin, phenol resin, epoxy compound, aldehyde compound and isocyanate compound. A thermoreversible recording medium comprising the above thermoreversible recording material may be selectively heated by a thermal head or the like to record visual information. The visual information may be erased by heating the medium and cooling it slowly.</p> |
申请公布号 |
EP0535930(B1) |
申请公布日期 |
1997.01.02 |
申请号 |
EP19920308910 |
申请日期 |
1992.09.30 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
OKABE, YUTAKA;NISHIOKA, YOICHI;OKADA, YUKIHISA |
分类号 |
B41M5/36;(IPC1-7):B41M5/36 |
主分类号 |
B41M5/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|