发明名称 |
Optically readable disc with a centering member fixed to a transparent substrate |
摘要 |
A transparent substrate has an information layer on an entirely flat side, and a centering member on the other side adapted to cooperate with centering means of an apparatus for inscribing and/or reading the disc. The centering member may be glued in place and have an aperture for engagement by an apparatus spindle.
|
申请公布号 |
US5216664(A) |
申请公布日期 |
1993.06.01 |
申请号 |
US19910784722 |
申请日期 |
1991.10.28 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
SLEEGERS, FRANCISCUS T.;SCHUITMAKER, PIETER D.;JANSSEN, PETER J. M. |
分类号 |
G11B7/24 |
主分类号 |
G11B7/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|