![OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL RECORDING METHOD](/ep/2011/02/23/EP1047056B1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL RECORDING METHOD
- 专利标题(中):记录介质记录用光学方法
- 申请号:EP99943215.6 申请日:1999-09-08
- 公开(公告)号:EP1047056B1 公开(公告)日:2011-02-23
- 发明人: MIZUNO, Hironobu Mitsubishi Chem. Corp. , OHNO, Takashi Mitsubishi Chemical Corporation , HORIE, Michikazu; Mitsubishi Chemical Corporation
- 申请人: Mitsubishi Kagaku Media Co., Ltd.
- 申请人地址: 1-23, Shiba 4-chome Minato-ku Tokyo JP
- 专利权人: Mitsubishi Kagaku Media Co., Ltd.
- 当前专利权人: Mitsubishi Kagaku Media Co., Ltd.
- 当前专利权人地址: 1-23, Shiba 4-chome Minato-ku Tokyo JP
- 代理机构: Merkle, Gebhard
- 优先权: JP25487798 19980909; JP5579299 19990303; JP16368599 19990610
- 国际公布: WO2000014735 20000316
- 主分类号: G11B7/24
- IPC分类号: G11B7/24 ; G11B7/125 ; G11B7/00
摘要:
An optical information recording medium comprises: (a) a substrate; and (b) a phase-change recording layer (B) containing a crystalline part as an unrecorded/erased state and an amorphous part as a recorded state. Information is recorded by using recording marks whose shortest length is at most 0.5 mu m. Either (1) erasure is effected by recrystallization substantially progressed by the growth of crystals from the boundary between the amorphous part or a fused part and the peripheral crystal part; or (2) (B) comprises a thin film with main components of germanium (Ge), antimony (Sb) and tellurium (Te), and at a fixed line speed, the recording layer is irradiated continuously with recording light of sufficient power (Pw) to melt the recording layer and generally recrystallize it and then this is interrupted and amorphous marks formed; or (3) on the substrate, in order from the recording regeneration light irradiation direction, are provided a first protective layer, the layer (B), a 5-30 nm thick second protective layer, and a reflecting layer, the thickness of (B) is 5-25 nm, and (B) is a thin film comprising a main component of a germanium- antimony-tellurium (GeSbTe) alloy having a composition shown by the region enclosed by 4 lines, A, B, C and D (excluding the boundary lines), where A is the line joining (Sb 0.7Te 0.3) and Ge, B is the line joining (Ge 0.03Sb 0.68Te 0.29) and (Sb 0.95Ge 0.05), C is the line joining (Sb 0.9Ge 0.1) and (Te 0.9Ge 0.1), and D is the line joining (Sb 0.8Te 0.2) and Ge.
公开/授权文献:
IPC结构图谱:
G | 物理 |
--G11 | 信息存储 |
----G11B | 基于记录载体和换能器之间的相对运动而实现的信息存储 |
------G11B7/00 | 用光学方法,例如,用光辐射的热射束记录用低功率光束重现的;为此所用的记录载体 |
--------G11B7/24 | .按所选用的材料或按结构或按形式区分的记录载体 |