发明名称 |
Optical information recording medium production method |
摘要 |
A method of manufacturing an optical information recording medium to/from which signals can optically be recorded and reproduced. The recording medium includes a signal substrate (100), a signal recording layer (110), and a transparent cover layer (125) having a first transparent layer (115) and a second transparent layer (120) harder than the first transparent layer (115), signals being recorded and reproduced to and from the recording medium by a light transmitted to the signal recording layer through the transparent cover layer (125). The first transparent layer is formed so as to have a first predetermined distribution of thickness. The second transparent layer is formed so as to have a second predetermined distribution of thickness to make the total thickness of the transparent cover layer (125) uniform. The first transparent layer (115) may be made of a plurality of thin laminated transparent layers.
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申请公布号 |
US2004232570(A1) |
申请公布日期 |
2004.11.25 |
申请号 |
US20040479505 |
申请日期 |
2004.05.10 |
申请人 |
HAYASHI KAZUHIRO;HISADA KAZUYA;ABE SHINYA;HIGASHIMARU KAZUHIRO;OHNO EIJI |
发明人 |
HAYASHI KAZUHIRO;HISADA KAZUYA;ABE SHINYA;HIGASHIMARU KAZUHIRO;OHNO EIJI |
分类号 |
G11B7/254;G11B7/26;(IPC1-7):B29D11/00 |
主分类号 |
G11B7/254 |
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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