发明申请
- 专利标题: Information recording medium
- 专利标题(中): 信息记录介质
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申请号: US10929425申请日: 2004-08-31
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公开(公告)号: US20050064334A1公开(公告)日: 2005-03-24
- 发明人: Akemi Hirotsune , Junko Ushiyama , Yumiko Anzai
- 申请人: Akemi Hirotsune , Junko Ushiyama , Yumiko Anzai
- 申请人地址: JP Osaka
- 专利权人: HITACHI MAXELL, LTD.
- 当前专利权人: HITACHI MAXELL, LTD.
- 当前专利权人地址: JP Osaka
- 优先权: JP2004-077408 20040318; JP2003-329298 20030922
- 主分类号: B41M5/26
- IPC分类号: B41M5/26 ; C22C28/00 ; G11B7/0045 ; G11B7/24 ; G11B7/243 ; G11B7/254 ; G11B7/257
摘要:
An information recording medium for high-density recording and reproduction that is low-cost and that has good rewrite characteristics. The information recording medium, in which recording is performed as an atomic arrangement is changed by optical irradiation, is capable of a number of rewrites. The information recording medium comprises a substrate on which a first protective layer with a thickness in the range from 18 to 65 nm, a recording film, a second protective layer, and a reflective layer are disposed in the mentioned order as seen from a light-incident side. Not less than 97 atomic % of the composition of the recording film is accounted for by Ge, Bi, and Te.