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： US694664申请日： 1985-01-24
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公开(公告)号： US4682321A公开(公告)日： 1987-07-21
- 发明人: Takashi Takaoka , Satoru Koyahara , Tetsuo Saito
- 申请人： Takashi Takaoka , Satoru Koyahara , Tetsuo Saito
- 申请人地址： JPX Kawasaki
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX59-14058 19840128
- 主分类号： B41M5/26
- IPC分类号： B41M5/26 ; G11B7/0045 ; G11B7/24 ; G11B7/243 ; G01D15/34
摘要：
An optical disk for recording information, comprising a substrate and a plurality of thin film layers disposed on said substrate, each film having different optical extinction coefficient from that is the others. The thin film layers can be converted into a single layer when irradiated with a recording beam.
公开/授权文献
- US4045295A Purification of sulfuric acid containing acetic acid 公开/授权日：1977-08-30
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