发明授权
- 专利标题： Optical card and method for reading information recorded in it
- 专利标题（中）： 用于读取记录在其中的信息的光卡和方法
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申请号： US581188申请日： 1990-09-11
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公开(公告)号： US5248584A公开(公告)日： 1993-09-28
- 发明人: Kyo Miura , Hisaaki Kawade , Keiko Ikoma , Yoshihiro Oguchi , Masashi Miyagawa , Mizuho Hiraoka , Hitoshi Yoshino , Kazumi Nagano
- 申请人： Kyo Miura , Hisaaki Kawade , Keiko Ikoma , Yoshihiro Oguchi , Masashi Miyagawa , Mizuho Hiraoka , Hitoshi Yoshino , Kazumi Nagano
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-205870 19860903; JPX61-260800 19861104; JPX62-172917 19870713; JPX62-172918 19870713
- 主分类号： G11B7/0033
- IPC分类号： G11B7/0033 ; G11B7/244
摘要：
An optical card comprises a transparent substrate having a track groove on its surface, an optical recording layer provided on said track groove, and an opaque card substrate provided in such a manner that it may be contiguous to said optical recording layer, wherein an unrecordable part is provided at an end of said track groove formed on the surface of the transparent substrate.
公开/授权文献
- US4985436A Composition of matter for inhibiting leukemias and sarcomas 公开/授权日：1991-01-15