发明公开
EP1347448A1 Optical recording medium and optical recording process using the same
有权
选择Aufzeichnungsmedium undzugehörigesAufzeichnungsverfahren
- 专利标题: Optical recording medium and optical recording process using the same
- 专利标题(中): 选择Aufzeichnungsmedium undzugehörigesAufzeichnungsverfahren
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申请号: EP03006474.5申请日: 2003-03-21
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公开(公告)号: EP1347448A1公开(公告)日: 2003-09-24
- 发明人: Shinotsuka, Michiaki, Ricoh Company, Ltd. , Sekiya, Takuro, Ricoh Company, Ltd.
- 申请人: Ricoh Company
- 申请人地址: 1-3-6, Nakamagome, Ohta-ku Tokyo 143-8555 JP
- 专利权人: Ricoh Company
- 当前专利权人: Ricoh Company
- 当前专利权人地址: 1-3-6, Nakamagome, Ohta-ku Tokyo 143-8555 JP
- 代理机构: Barz, Peter, Dr.
- 优先权: JP2002080057 20020322; JP2002273670 20020919; JP2002096709 20020329
- 主分类号: G11B7/24
- IPC分类号: G11B7/24
摘要:
An optical recording medium having two recording layer structures (101,201) which includes a cover substrate (100), a grooved substrate (200), a first recording layer structure (101), an intermediate layer (108), a separation layer (109), and a second recording layer structure (201). In the optical recording medium, the two recording layer structures (101,201) include a first recording layer (101) structure, and a second recording layer structure (201) between the substrates (100,200), the first recording layer structure (101) includes, in this order, a first protective layer (102), a first recording layer (104), a second protective layer (106), a first reflective layer (107), the second recording layer structure (201) includes, in this order, a third protective layer (202), a second recording layer (204), a fourth protective layer (206), a second reflective layer (207), and a ratio of a thickness of the first recording layer structure (101) and a thickness of the intermediate layer (108) is 0.2 to 1.0.
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