发明授权
- 专利标题： Abrasion resistant magnetic recording member
- 专利标题（中）： 耐磨磁记录元件
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申请号： US934594申请日： 1986-11-25
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公开(公告)号： US4804590A公开(公告)日： 1989-02-14
- 发明人: Kyuzo Nakamura , Yoshifumi Ota , Taiki Yamada , Michio Ishikawa , Noriaki Tani
- 申请人： Kyuzo Nakamura , Yoshifumi Ota , Taiki Yamada , Michio Ishikawa , Noriaki Tani
- 申请人地址： JPX Kanagawa
- 专利权人： Nihon Shinku Gijutsu Kabushiki Kaisha
- 当前专利权人： Nihon Shinku Gijutsu Kabushiki Kaisha
- 当前专利权人地址： JPX Kanagawa
- 优先权： JPX61-22979 19860206; JPX61-119108 19860526
- 主分类号： G11B5/725
- IPC分类号： G11B5/725 ; G11B5/72
摘要：
An abrasion resistant magnetic recording member having a carbonaceous surfacial protective film for protecting a surface of a magnetic film formed on a substrate, and the carbonaceous surfacial protective film is formed of a lower layer comprising a comparatively hard carbonaceous film and an upper layer comprising a comparatively soft carbonaceous film.
公开/授权文献
- US5859490A Vibration actuator and driving apparatus 公开/授权日：1999-01-12