发明名称 |
Method for making an optical disc having a track pitch smaller than a recording beam diameter |
摘要 |
A recording method whereby an inorganic resist made of an incomplete oxide of a transition metal is formed as a film onto a substrate and a latent image corresponding to pits is formed onto the inorganic resist by exposure. The exposure is performed by a laser beam whose intensity has been modulated by a pulse signal whose pulse height decreases in a rear portion in a length direction of the pit, thereby forming a format of a track pitch smaller than a recording beam diameter (track pitch/exposure beam diameter=0.333 to 0.833).
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申请公布号 |
US7529175(B2) |
申请公布日期 |
2009.05.05 |
申请号 |
US20060495427 |
申请日期 |
2006.07.28 |
申请人 |
SONY CORPORATION;SONY DISC & DIGITAL SOLUTIONS, INC. |
发明人 |
ENDOH SOHMEI;SAITO NORIYUKI;IGARI TAKAHIRO;GOUKO TAKESHI;MINEGISHI SHINJI;KIKUNO EIJIRO |
分类号 |
G11B7/24 |
主分类号 |
G11B7/24 |
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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