发明名称 |
METHOD OF FORMING MICROPATTERN, METHOD OF MANUFACTURING OPTICAL RECORDING MEDIUM MASTER COPY, OPTICAL RECORDING MEDIUM MASTER COPY, OPTICAL RECORDING MEDIUM STAMPER, AND OPTICAL RECORDING MEDIUM |
摘要 |
By using an existing, relatively inexpensive manufacturing device, micropatterns (e.g. guiding grooves, prepits) having such track pitch and pit pitch that are smaller than the diameter of a light spot are formed more finely. There are provided at least two layers, i.e. (i) a resin substrate and (ii) a depressed part inducing layer made of dielectric material or metal oxide. A light beam is radiated and focused onto the depressed part inducing layer so as to form pit parts and/or guiding grooves on irradiated parts of the resin substrate. The depressed part inducing layer is then removed, so as to expose the pit parts and/or guiding grooves.
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申请公布号 |
US2010018639(A1) |
申请公布日期 |
2010.01.28 |
申请号 |
US20090574651 |
申请日期 |
2009.10.06 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
YAMAMOTO MASAKI;MORI GO;TAJIMA HIDEHARU;TAKAMORI NOBUYUKI;MIEDA MICHINOBU |
分类号 |
G11B7/004;G11B7/26;G03F7/00;G03F7/11;G11B7/24 |
主分类号 |
G11B7/004 |
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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