发明授权
US4745507A Composite type magnetic head with non-magnetic member in coil mounting
portion
失效
在线圈安装部分中具有非磁性构件的复合型磁头
- 专利标题： Composite type magnetic head with non-magnetic member in coil mounting portion
- 专利标题（中）： 在线圈安装部分中具有非磁性构件的复合型磁头
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申请号： US826340申请日： 1986-02-05
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公开(公告)号： US4745507A公开(公告)日： 1988-05-17
- 发明人: Shigekazu Otomo , Noriyuki Kumasaka , Takeo Yamashita , Juichi Morikawa , Hideo Fujiwara , Osamu Inagoya , Takeshi Tottori , Masashi Hayashi
- 申请人： Shigekazu Otomo , Noriyuki Kumasaka , Takeo Yamashita , Juichi Morikawa , Hideo Fujiwara , Osamu Inagoya , Takeshi Tottori , Masashi Hayashi
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-24305 19850213
- 主分类号： G11B5/127
- IPC分类号： G11B5/127 ; G11B5/17 ; G11B5/187 ; G11B5/21 ; G11B5/23 ; G11B5/31
摘要：
A composite type magnetic head wherein a functional gap is formed by a pair of opposing magnetic metal substance members coupled to a substrate of a nonmagnetic substance and include a head front surface facing a magnetic recording medium. A coil portion is provided rearwardly of the head front surface and includes a coil window provided between the pair of magnetic metal substance members and a coil for encircling both the nonmagnetic substance substrate and at least one of the magnetic metal substance members coupled to the substrate. A rear core portion is provided rearwardly of the coil portion and is magnetically coupled with the magnetic metal substance members, the rear core portion including at least a part made of a high permeability ferrite.
公开/授权文献
- US5780512A Alkylated (hetero) cyclic compounds 公开/授权日：1998-07-14
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