发明授权
- 专利标题： Thin film magnetic head having a lower pole shaped to improve reproduction characteristics
- 专利标题（中）： 具有较低极点的薄膜磁头，以改善再现特性
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申请号： US556574申请日： 1995-11-13
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公开(公告)号： US5978187A公开(公告)日： 1999-11-02
- 发明人: Shigeru Shouji , Atsushi Toyoda
- 申请人： Shigeru Shouji , Atsushi Toyoda
- 申请人地址： JPX
- 专利权人： Yamaha Corporation
- 当前专利权人： Yamaha Corporation
- 当前专利权人地址： JPX
- 优先权： JPX6-304300 19941114
- 主分类号： G11B5/02
- IPC分类号： G11B5/02 ; G11B5/23 ; G11B5/31 ; G11B5/147 ; G11B5/187
摘要：
The leading edge of a lower pole is constituted by a protruded central parallel portion, opposite end parallel portions, and slanted portions coupling the central parallel portion and the opposite end parallel portions. The width T.sub.wc of the central parallel portion is set to 10 to 25% of the total width T.sub.wa of the lower pole. The thickness P1' of the opposite end portion is set in the range from 3/1 or thicker to 3/2 or thinner than the thickness P1 of the central parallel portion.
公开/授权文献
- US4597189A Packaged kiln dried firewood 公开/授权日：1986-07-01
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