发明授权
- 专利标题: Magnetic recording medium and magnetic storage
- 专利标题(中): 磁记录介质和磁存储
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申请号: US399775申请日: 1989-08-28
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公开(公告)号: US5236791A公开(公告)日: 1993-08-17
- 发明人: Yotsuo Yahisa , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Shinichiro Saitoh , Suzuki Hiroyuki , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Noriyuki Shige , Kazumasa Takagi
- 申请人: Yotsuo Yahisa , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Shinichiro Saitoh , Suzuki Hiroyuki , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Noriyuki Shige , Kazumasa Takagi
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX63-214964 19880831; JPX63-228674 19880914
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/72 ; G11B5/73
摘要:
A magnetic recording medium that uses, as a protective coating layer provided on a magnetic layer for magnetically recording signals, a layer made of a nonmagnetic material consisting of two ore more elements of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W, and one or more elements of N, C, O, and B, or made of a magnetic material consisting of one or more elements of Co, Fe, Ni, and Gd, one or more elements of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W, and one or more elements of N, C, O, B, and Si is excellent in sliding endurance. When the protective coating layer is made of the nonmagnetic material, the magnetic recording medium is also excellent in corrosion resistance, and when the protective coating layer is made of the magnetic material, the spacing between a magnetic head and the magnetic recording medium can advantageously be made large. Both the cases are high in reliability, and suitable for high density magnetic recording. The magnetic recording medium can be used in combination with a magnetic head that uses a metal magnetic alloy as at least part of the magnetic core to provide an excellent magnetic storage.
公开/授权文献
- USD279864S Vitamin pill dispenser 公开/授权日:1985-07-30
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