发明授权
- 专利标题： Magnetic head having electromechanical transducer disposed at one end thereof
- 专利标题（中）： 具有设置在其一端的机电换能器的磁头
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申请号： US400596申请日： 1982-07-22
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公开(公告)号： US4672496A公开(公告)日： 1987-06-09
- 发明人: Kenji Kanai , Nobuyuki Kaminaka , Noboru Nomura , Yuuji Omata
- 申请人： Kenji Kanai , Nobuyuki Kaminaka , Noboru Nomura , Yuuji Omata
- 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： JPX56-113753 19810722; JPX56-113754 19810722
- 主分类号： G11B5/127
- IPC分类号： G11B5/127 ; G11B5/49 ; G11B5/147
摘要：
A thin magnetic film is deposited over a nonmagnetic or piezoelectric substrate. When a shock wave is propagated through this substrate from its one end to the other end, the permeability of the thin magnetic film is locally increased and a portion or region having a high permeability also travels from one end to the other end of the thin magnetic film in unison with the shock wave. A magnetic core with a signal winding is disposed and magnetically coupled with the thin magnetic film. The signal can be recorded or reproduced while the recording medium is scanned.
公开/授权文献
- US5024542A Magnetic actuator 公开/授权日：1991-06-18
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