Invention Grant
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
- Patent Title: Optically readable disc with a centering member fixed to a transparent substrate
- Patent Title (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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Application No.: US784722Application Date: 1991-10-28
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Publication No.: US5216664APublication Date: 1993-06-01
- Inventor: Franciscus T. Sleegers , Pieter D. Schuitmaker , Peter J. M. Janssen
- Applicant: Franciscus T. Sleegers , Pieter D. Schuitmaker , Peter J. M. Janssen
- Applicant Address: NY New York
- Assignee: U.S. Philips Corporation
- Current Assignee: U.S. Philips Corporation
- Current Assignee Address: NY New York
- Priority: NLX8300479 19830209
- Main IPC: G11B7/24
- IPC: G11B7/24
Abstract:
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.
Public/Granted literature
- US4183337A Air-fuel mixture ratio control using electrostatic force Public/Granted day:1980-01-15
Information query
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