发明名称 |
RECORDING/REPRODUCING METHOD AND DEVICE OF PIGMENT-BASED WRITE ONCE TYPE DVD MEDIUM |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording/reproducing method and device for obtaining a preferable recording waveform when performing a high linear velocity recording to a pigment-based write once type DVD medium. <P>SOLUTION: The pigment-based write once type DVD medium recording/reproducing method is implemented as follows. The shortest mark is recorded with a higher output pulse than the other marks onto a recording layer mainly composed of organic pigment and formed on a substrate having a wobbled guide groove. The third shortest mark and after are recorded by a single pulse light having a pulse power equal to that of the second shortest mark which has been outputted highly when the pulse rear end has been outputted highly for a predetermined period of time. When performing mark recording, a cooling pulse is irradiated to the rear end and after of the pulse of all the marks and the irradiation light intensity is maintained at 0.1 mW or below for a predetermined period of time. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005100579(A) |
申请公布日期 |
2005.04.14 |
申请号 |
JP20040022112 |
申请日期 |
2004.01.29 |
申请人 |
RICOH CO LTD |
发明人 |
TOMURA TATSUYA;SATO TSUTOMU;UENO YASUNOBU;NOGUCHI SO |
分类号 |
G11B7/244;G11B7/0045;G11B7/007;G11B7/125;G11B7/24;G11B7/246;G11B7/254;G11B7/256;G11B7/257;G11B7/258 |
主分类号 |
G11B7/244 |
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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