| 发明名称 |
Magneto-optical disc. |
| 摘要 |
A magneto-optical disc has a resin substrate and a magneto-optical film. A birefringence distribution of the substrate in a static state is so set that a disc phase difference during rotation of the disc is kept at a level of substantially zero. <IMAGE> |
| 申请公布号 |
EP0612069(A3) |
申请公布日期 |
1994.11.17 |
| 申请号 |
EP19940300874 |
申请日期 |
1994.02.07 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TAKADA, KUNIO, C/O CANON KABUSHIKI KAISHA |
| 分类号 |
G11B11/10;G11B7/24;G11B11/105 |
主分类号 |
G11B11/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
