发明名称 |
Process for producing magnetic recording medium |
摘要 |
A disk-form magnetic recording medium having a minimized change in output on an output envelope is produced by a process which comprises coating a nonmagnetic substrate with a magnetic paint and applying a magnetic field for orientation to the magnetic paint in a yet unsolidified state on the substrate moved in a direction. The magnetic field for orientation is made stronger in a direction perpendicular to the moving direction of the coated substrate than in the moving direction. The directional change in magnetic field for orientation is provided, e.g., by a plurality of magnetic poles having different magnetic powers or disposed with increasing angular spacing in a direction leaving the moving direction of the substrate, or by an electromagnet supplied with a positionally varying current.
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申请公布号 |
US4824708(A) |
申请公布日期 |
1989.04.25 |
申请号 |
US19860928420 |
申请日期 |
1986.11.10 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SUZUKI, TAKASHI;HASU, AKINORI;YOSHIDA, HIROSHI;HASHIMOTO, SHIGERU |
分类号 |
G11B5/845;(IPC1-7):G11B5/70 |
主分类号 |
G11B5/845 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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