发明名称 |
OPTICALLY READABLE STORAGE DISC |
摘要 |
An interchangeable optically readable storage disk has a substrate with a recording surface, and a cover thereon which may comprise a second substrate with a further recording layer. The disk includes a protecting arrangement at the circumference of the substrate, which includes a balancing arrangement. The balancing may be effected by apertures in the protecting arrangement, or balancing masses affixed thereto. |
申请公布号 |
KR900011241(Y1) |
申请公布日期 |
1990.12.22 |
申请号 |
KR19850001437U |
申请日期 |
1985.02.11 |
申请人 |
N.V. PHILIPS GLOEILAMPENFABRIEKEN |
发明人 |
HUGEVEEN LEONARDUS P.J.;PETERS HEDNRICKS W.K.M.;SPRUIET ALOIZIUS M.J.M. |
分类号 |
G11C11/42;G11B7/24;(IPC1-7):G11B7/24;G11B25/04 |
主分类号 |
G11C11/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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