| 发明名称 |
Optical disk having an index mark. |
| 摘要 |
<p>An optical disk (1) for optically recording and reproducing information thereon and therefrom, comprising:
(a) a substrate;
(b) a recording layer deposited on at least one side of said substrate; and
(c) a rotation index mark (9) indicative of a starting point of the rotation of said disk, said index mark being constructed of a groove-like phase structure within said substrate and said recording layer. </p> |
| 申请公布号 |
EP0054438(A1) |
申请公布日期 |
1982.06.23 |
| 申请号 |
EP19810305910 |
申请日期 |
1981.12.16 |
| 申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SATOH, ISAO;YOSHIDA, TOMIO;HARIGAE, SHUNJI;KOISHI, KENJI |
| 分类号 |
G11B7/007;G11B7/013;G11B17/00;G11B19/28;G11B23/42;G11B27/10;G11B27/19;G11B27/24;G11B27/30;(IPC1-7):11B7/24;11B7/00 |
主分类号 |
G11B7/007 |
| 代理机构 |
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代理人 |
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