发明名称 |
Optical information recording medium. |
摘要 |
<p>An optical information recording medium is disclosed which is manufactured by a so-called photopolymerization process. The medium comprises a glass substrate and a layer of ultraviolet ray setting resin having a surface which is a replica of a stumper. Concentric recesses are formed at the outer and inner peripheral edge of the glass substrate to receive an excess resin to avoid any formation of bar on the finished disk medium. <IMAGE></p> |
申请公布号 |
EP0443522(A2) |
申请公布日期 |
1991.08.28 |
申请号 |
EP19910102352 |
申请日期 |
1991.02.19 |
申请人 |
SONY CORPORATION |
发明人 |
ANEZAKI, YOSHIKAZU, C/O SONY MAGNETIC PRODUCTS INC;SASAKI, KOJI, C/O SONY MAGNETIC PRODUCTS INC |
分类号 |
B29C35/08;B29C39/00;B29C39/28;B29D17/00;G11B7/24;G11B7/26 |
主分类号 |
B29C35/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|