发明授权
- 专利标题: Information recording medium glass substrate and information recording medium
- 专利标题(中): 信息记录介质玻璃基板和信息记录介质
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申请号: US14347944申请日: 2012-09-11
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公开(公告)号: US09454984B2公开(公告)日: 2016-09-27
- 发明人: Takeshi Endo
- 申请人: Takeshi Endo
- 申请人地址: JP Tokyo
- 专利权人: HOYA CORPORATION
- 当前专利权人: HOYA CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Brinks Gilson & Lione
- 优先权: JP2011-217374 20110930
- 国际申请: PCT/JP2012/073192 WO 20120911
- 国际公布: WO2013/047189 WO 20130404
- 主分类号: G11B5/73
- IPC分类号: G11B5/73
摘要:
An information recording medium glass substrate and an information recording medium are provided in which a first roll-off variation and a second roll-off variation fall within the following ranges: 180 Å≦first roll-off variation≦990 Å (condition 1) and 650 Å≦second roll-off variation≦3700 Å (condition 2).
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