| 发明名称 |
Photochromic recording medium. |
| 摘要 |
<p>A photochromic recording paper. Photochromic material composed of triphenylmethane compound is impregnated in a paper substrate and is responsive to irradiation of optical ray effective to develop the photochromic material so as to effect recording of image on the substrate, the triphenylmethane compound having general composition represented by the following formula: <CHEM> c</p> |
| 申请公布号 |
EP0384411(A1) |
申请公布日期 |
1990.08.29 |
| 申请号 |
EP19900103268 |
申请日期 |
1990.02.20 |
| 申请人 |
SEIKO INSTRUMENTS INC. |
发明人 |
TAKAHASHI, HIROSHI, C/O SEIKO INSTRUMENTS INC.;IWASAKI, FUMIHARU, C/O SEIKO INSTRUMENTS INC.;SAKOJIRI, HIROMICHI, C/O SEIKO INSTRUMENTS INC. |
| 分类号 |
B41M5/28;G03C1/73;G03C7/46 |
主分类号 |
B41M5/28 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
