发明授权
- 专利标题: Optical recording medium
- 专利标题(中): 光记录介质
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申请号: US764079申请日: 1985-08-09
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公开(公告)号: US4702945A公开(公告)日: 1987-10-27
- 发明人: Karl-Heinz Etzbach , Peter Neumann , Matthias Dust , Helmut Ringsdorf , Hans-Werner Schmidt , Guenter Baur , Friedrich Windscheid , Rudolf Kiefer
- 申请人: Karl-Heinz Etzbach , Peter Neumann , Matthias Dust , Helmut Ringsdorf , Hans-Werner Schmidt , Guenter Baur , Friedrich Windscheid , Rudolf Kiefer
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3429438 19840810
- 主分类号: B41M5/26
- IPC分类号: B41M5/26 ; C09K19/38 ; C09K19/40 ; G02F1/13 ; G11B7/24 ; G11B7/244 ; G11B7/245 ; G11B7/248 ; G11B7/25 ; C09K19/00
摘要:
An optical recording medium contains, on a base, one or more dyes and a polymer which forms liquid-crystalline phases.The information is written into the uniformly oriented liquid-crystalline polymer layer, for example by means of a laser. During this procedure, the polymer heats up locally to above a phase transition temperature. By cooling, the resulting change is frozen in the glass state.The information can be erased by applying an electric field and/or heating.The recording material permits high-contrast storage and possesses high sensitivity, good resolution and excellent stability.