发明授权
- 专利标题: Optical information recording medium
- 专利标题(中): 光信息记录介质
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申请号: US10344700申请日: 2002-06-26
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公开(公告)号: US06986152B2公开(公告)日: 2006-01-10
- 发明人: Hiroyuki Takemoto , Mitsuo Arima , Tadao Suzuki , Yoshihito Fukushima , Hiroshi Nakayama , Atsushi Takeuchi
- 申请人: Hiroyuki Takemoto , Mitsuo Arima , Tadao Suzuki , Yoshihito Fukushima , Hiroshi Nakayama , Atsushi Takeuchi
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP2001-200498 20010702
- 国际申请: PCT/JP02/06445 WO 20020626
- 国际公布: WO03/005353 WO 20030116
- 主分类号: G11B7/24
- IPC分类号: G11B7/24
摘要:
An optical information recording medium, which includes both of a land surface and a groove surface as a recording track and presents high signal quality. The optical information recording medium includes both a land and a groove as the recording track on a substrate, in which a laser light is irradiated from a reverse side of the substrate to thereby carry out a recording and a reproduction, and an inclination angle of a groove side is 25° or more and 40° or less, and both of arithmetic average roughness (Ra) on the land surface and the groove surface are assumed to be 0.2 to 0.7 nm.
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