发明公开
- 专利标题: Optical recording disc and method of the production thereof
- 专利标题(中): 光学记录盘及其生产方法
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申请号: EP86107210.6申请日: 1986-05-27
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公开(公告)号: EP0204255A3公开(公告)日: 1989-04-12
- 发明人: Umeda, Jun-ichi , Shigematsu, Kazuo
- 申请人: Hitachi Maxell Ltd. , HITACHI, LTD.
- 申请人地址: No 1-1-88, Ushitora Ibaraki-shi Osaka-fu JP
- 专利权人: Hitachi Maxell Ltd.,HITACHI, LTD.
- 当前专利权人: Hitachi Maxell Ltd.,HITACHI, LTD.
- 当前专利权人地址: No 1-1-88, Ushitora Ibaraki-shi Osaka-fu JP
- 代理机构: von Kreisler, Alek, Dipl.-Chem.
- 优先权: JP112183/85 19850527
- 主分类号: G11B7/24
- IPC分类号: G11B7/24 ; G11B7/26
摘要:
An optical recording disc comprises a resin layer of resin material formed on a relatively rough surface of each of transparent disc substrates, the resin material having approximately the same refractive index of light as the refractive index of the transparent disc substrate, and a recording layer formed on each of said resin layers. Accordingly, the optical recording disc enables to decrease the production cost and to write and read an information signal into and from the recording layer at an improved signal to noise ratio than a conventional optical recording disc.
公开/授权文献
- EP0204255A2 Optical recording disc and method of the production thereof 公开/授权日:1986-12-10
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