发明名称 |
OPTICAL RECORDING/REPRODUCING MEDIUM-USE SUBSTRATE, PRODUCTION METHOD FOR OPTICAL RECORDING/REPRODUCING MEDIUM PRODUCING STAMPER AND OPTICAL RECORDING/REPRODCING MEDIUM PRODUCING STAMPER |
摘要 |
In an optical recording and reproducing medium having a groove 2 formed along a recording track and which is recorded and/or reproduced with irradiation of light L having a predetermined wavelength lambda , a track pitch p of the groove 2 is selected in a range of from 200 nm to 350 nm and a ratio wg'/p between a width wg of the groove 2 and the track pitch p is selected in a range of from 0.24 to 0.67. <IMAGE>
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申请公布号 |
EP1429321(A1) |
申请公布日期 |
2004.06.16 |
申请号 |
EP20020751644 |
申请日期 |
2002.07.18 |
申请人 |
SONY CORPORATION |
发明人 |
ENDOH, SOHMEI;SUZUKI, TADAO;SHIMIZU, JUN;NAKANO, JUN |
分类号 |
G11B5/00;G11B7/00;G11B7/007;G11B7/24;G11B7/26;(IPC1-7):G11B7/24 |
主分类号 |
G11B5/00 |
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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