发明授权
US09454984B2 Information recording medium glass substrate and information recording medium 有权
信息记录介质玻璃基板和信息记录介质

  • 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
  • 申请号: US14347944
    申请日: 2012-09-11
  • 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
Information recording medium glass substrate and information recording medium
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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