发明授权
US5216664A Optically readable disc with a centering member fixed to a transparent
substrate
失效
具有固定在透明基板上的定心构件的光学读取盘
- 专利标题： Optically readable disc with a centering member fixed to a transparent substrate
- 专利标题（中）： 具有固定在透明基板上的定心构件的光学读取盘
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申请号： US784722申请日： 1991-10-28
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公开(公告)号： US5216664A公开(公告)日： 1993-06-01
- 发明人: Franciscus T. Sleegers , Pieter D. Schuitmaker , Peter J. M. Janssen
- 申请人： Franciscus T. Sleegers , Pieter D. Schuitmaker , Peter J. M. Janssen
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： NLX8300479 19830209
- 主分类号： G11B7/24
- IPC分类号： G11B7/24
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.
公开/授权文献
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