发明名称 |
Optical data recording disc with protrusion between clamping area and center hole |
摘要 |
A disc-shaped optical data recording medium has a signal recording layer for reading and/or writing data using light, and a 10 mum to 200 mum thick transparent protective layer disposed over the signal recording layer. The optical data recording medium includes a protrusion projecting from a surface of the transparent protective layer on a light-incidence surface side to which light is emitted to the signal recording layer. The protrusion is disposed in an area between a center hole and a clamping area where the optical data recording medium is held when reading and/or writing data in the signal recording layer.
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申请公布号 |
US2008016522(A1) |
申请公布日期 |
2008.01.17 |
申请号 |
US20070898461 |
申请日期 |
2007.09.12 |
申请人 |
HAYASHI KAZUHIRO;OHNO EIJI;MOHRI MASANARI |
发明人 |
HAYASHI KAZUHIRO;OHNO EIJI;MOHRI MASANARI |
分类号 |
G11B7/24;B29C45/26;B29D17/00;G11B7/26;G11B17/028 |
主分类号 |
G11B7/24 |
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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