发明授权
- 专利标题: Three pole single element magnetic read/write head
- 专利标题(中): 三极单元磁读/写头
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申请号: US695647申请日: 1985-01-28
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公开(公告)号: US4644432A公开(公告)日: 1987-02-17
- 发明人: David E. Heim
- 申请人: David E. Heim
- 申请人地址: NY Armonk
- 专利权人: International Business Machines
- 当前专利权人: International Business Machines
- 当前专利权人地址: NY Armonk
- 主分类号: G11B5/09
- IPC分类号: G11B5/09 ; G11B5/127 ; G11B5/17 ; G11B5/265 ; G11B5/31 ; G11B15/12 ; G11B5/147
摘要:
A magnetic head has three pole pieces that form a magnetic circuit. The magnetic pole pieces are arranged in a common plane so that the two outside pole pieces are each spaced from the central pole piece to form a transducing gap between each of the outside pole pieces and the central pole piece. A first and a second coil, each having the same magnetic sense, is wound on the magnetic structure between an outside and the center pole piece. The coils are connected in series for a write operation so that the flux in the outside pole pieces is additive for writing, and the coils are connected in series opposition for a read operation so that the flux produced in the center pole by a previously recorded magnetic transition in the magnetic recording medium adjacent to the transducing gaps is sensed additively in the coils.
公开/授权文献
- USPP10194P Brachycome plant named `Strawberry Mousse` 公开/授权日:1998-01-13