发明授权
- 专利标题: Perpendicular magnetic recording medium and the method for preparing the same
- 专利标题(中): 垂直磁记录介质及其制备方法
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申请号: US506493申请日: 1990-04-05
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公开(公告)号: US4994321A公开(公告)日: 1991-02-19
- 发明人: Makoto Nagao , Kunihiko Sano , Fusao Yamanaka , Akira Nahara
- 申请人: Makoto Nagao , Kunihiko Sano , Fusao Yamanaka , Akira Nahara
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX61-12100 19860124; JPX61-12101 19860124
- 主分类号: G11B5/64
- IPC分类号: G11B5/64 ; G11B5/84
摘要:
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the magnetic layer is surface treated by a plasma treatment or by applying an oxide layer or a nitride layer thereon and thirdly, the protective layer is applied thereto.
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