发明授权
- 专利标题： Phase-change type optical recording medium and reproduction method and apparatus for such a recording medium
- 专利标题（中）： 相变型光学记录介质以及这种记录介质的再现方法和装置
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申请号： US11658346申请日： 2006-05-19
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公开(公告)号： US08000198B2公开(公告)日： 2011-08-16
- 发明人: Michiaki Shinotsuka , Masaru Shinkai , Hiroyoshi Sekiguchi , Eiko Hibino , Masaki Kato , Katsuyuki Yamada , Masahiko Nakayama
- 申请人： Michiaki Shinotsuka , Masaru Shinkai , Hiroyoshi Sekiguchi , Eiko Hibino , Masaki Kato , Katsuyuki Yamada , Masahiko Nakayama
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Dickstein Shapiro LLP
- 优先权： JP2005-166269 20050606; JP2005-166268 20050609; JP2005-347375 20051130; JP2006-019730 20060127
- 国际申请： PCT/JP2006/010516 WO 20060519
- 国际公布： WO2006/132096 WO 20061214
- 主分类号： G11B11/00
- IPC分类号： G11B11/00
摘要：
A dual-layer structure phase-change type optical recording medium includes a substrate (1), a reflective layer (2), a first protective layer (3), a first recording layer (4), a second protective layer (5), a resin intermediate layer (6), a third protective layer (7), a heat release layer (8) made of Cu or a Cu alloy, a fourth protective layer (9), a second recording layer (10), a fifth protective layer (11) and a cover substrate (12). A product of a reflectance of a high-reflection part and a modulation after recording is a value equal to or higher than a lower limit value for reproduction.
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