发明授权
- 专利标题: Process for the preparation of magnetic recording medium
- 专利标题(中): 制备磁记录介质的方法
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申请号: US943123申请日: 1978-09-18
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公开(公告)号: US4189508A公开(公告)日: 1980-02-19
- 发明人: Katsuyoshi Chiba , Yoshiki Kato , Teruo Tsunoda , Hajime Fukke , Teruaki Kobayashi , Heigo Ishihara , Waichi Nagashiro , Munehisa Mitsuya
- 申请人: Katsuyoshi Chiba , Yoshiki Kato , Teruo Tsunoda , Hajime Fukke , Teruaki Kobayashi , Heigo Ishihara , Waichi Nagashiro , Munehisa Mitsuya
- 申请人地址: JPX
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX52/113348 19770922
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B5/845 ; H01F10/02
摘要:
A process for the preparation of a magnetic recording medium comprising;applying a magnetic coating material composed of dispersing a ferromagnetic fine powder in a high molecular binder onto the surfaces of a nonmagnetic support member to form a coating thereon;arraying one or more sets of magnet pairs on the sides of front and back surfaces of said support member, each of said magnet pairs being deviated by a predetermined distance in the moving direction of said support member such that said magnet pairs will not face to each other; andapplying a magnetic field in such a manner that the magnetic field applied to said coating by the magnet pairs arrayed on the side of the front surface of said support member is greater than the magnetic field applied to said coating by the magnet pairs arrayed on the side of the back surface of said support member, thereby satisfying the requirements ofDo.ltoreq.a,b wherein Do represents a distance between the surface of said support member and said magnet pairs, a an average distance between the magnets constituting said magnet pairs arrayed on the side of the front surface of said support member, and b an average distance between the magnets constituting said magnet pairs arrayed on the side of the back surface of said support member.
公开/授权文献
- US5411674A Detergent composition having a sulfosuccinic amide 公开/授权日:1995-05-02
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