发明名称 |
Optical information recording media and optical information read/write device |
摘要 |
Both guide grooves and lands of an optical information recording medium constitute information tracks, the depth of the guide groove being between approximately lambda /8 and approximately lambda /4.7 in optical length and the width of the guide groove being between 0.34R and R, where R represents the beam diameter of a write laser beam on the record film and the power for writing information on each guide groove being differentiated from that for writing information on each land. <IMAGE> |
申请公布号 |
EP0859358(A3) |
申请公布日期 |
1999.02.10 |
申请号 |
EP19980103787 |
申请日期 |
1994.05.25 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MIYAGAWA, NAOYASU;OHNO, EIJI;NISHIUCHI, KENICHI |
分类号 |
B41M5/26;G11B7/00;G11B7/0045;G11B7/005;G11B7/0055;G11B7/006;G11B7/007;G11B7/085;G11B7/09;G11B7/125;G11B7/24 |
主分类号 |
B41M5/26 |
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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