发明授权
- 专利标题: Method for producing magnetic recording medium
- 专利标题(中): 磁记录介质的制造方法
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申请号: US367996申请日: 1995-01-03
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公开(公告)号: US5458914A公开(公告)日: 1995-10-17
- 发明人: Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
- 申请人: Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
- 申请人地址: JPX Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX5-61585 19930322; JPX5-100936 19930427
- 主分类号: G11B5/85
- IPC分类号: G11B5/85 ; H01F10/00
摘要:
A magnetic recording medium having good high density recording characteristics is produced by forming a magnetic layer on a substrate which is traveling around a peripheral surface of a cylindrical can by an oblique vapor deposition method to form a magnetic layer comprising cobalt, an axis of easy magnetization of which inclined from a line normal to the layer plane. A residual gas pressure in an initial region of the formation of the magnetic layer is kept as low as possible, in particular, the residual gas pressure in the initial region of the formation of the magnetic layer is lower than in the other part of the production apparatus.
公开/授权文献
- US4403336A X-Ray exposure apparatus 公开/授权日:1983-09-06