发明授权
- 专利标题: Magnetic recording medium, method for its production, and system for its use
- 专利标题(中): 磁记录介质,其生产方法及其使用系统
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申请号: US7969申请日: 1993-01-22
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公开(公告)号: US5605733A公开(公告)日: 1997-02-25
- 发明人: Akira Ishikawa , Sadao Hishiyama , Tomoo Yamamoto , Yoshihiro Shiroishi , Tomoyuki Ohno , Yotsuo Yahisa , Yukio Kato
- 申请人: Akira Ishikawa , Sadao Hishiyama , Tomoo Yamamoto , Yoshihiro Shiroishi , Tomoyuki Ohno , Yotsuo Yahisa , Yukio Kato
- 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: JPX4-009011 19920122; JPX4-012810 19920128; JPX4-063057 19920319
- 主分类号: G11B5/64
- IPC分类号: G11B5/64 ; G11B5/73 ; G11B5/84 ; G11B5/66
摘要:
A thin-film magnetic recording medium improves the magnetostatic and dynamic magnetic characteristics of the conventional magnetic recording media. In one embodiment, the substrate surface is textured in both the circumferential and radial directions. In further embodiments, a variety of underlayers (13) and crystal orientation control layers (17) are provided in accordance with specific parameters to control the crystal structure of the magnetic layer (14). Finally, an embodiment includes multiple magnetic layers (14, 19) having respectively different residual magnetic flux densities and thicknesses, but similar dot products of residual magnetic flux density and thickness.
公开/授权文献
- US6084684A Trap with distribution for arbitrary inks 公开/授权日:2000-07-04
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