发明授权
US07764465B2 Thin-film magnetic head with a spiral recording coil having a first part with a denser pitch closer to the medium facing surface than a second coil part and all set between a pair of magnetic layers
有权
具有螺旋记录线圈的薄膜磁头，其具有第一部分，该第一部分具有比第二线圈部分更靠近介质面对表面的更密的螺距，并且全部设置在一对磁性层之间
- 专利标题： Thin-film magnetic head with a spiral recording coil having a first part with a denser pitch closer to the medium facing surface than a second coil part and all set between a pair of magnetic layers
- 专利标题（中）： 具有螺旋记录线圈的薄膜磁头，其具有第一部分，该第一部分具有比第二线圈部分更靠近介质面对表面的更密的螺距，并且全部设置在一对磁性层之间
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申请号： US11692046申请日： 2007-03-27
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公开(公告)号： US07764465B2公开(公告)日： 2010-07-27
- 发明人: Sumihito Morita , Kiyoshi Kobayashi , Toru Takahashi
- 申请人： Sumihito Morita , Kiyoshi Kobayashi , Toru Takahashi
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Brinks Hofer Gilson & Lione
- 优先权： JP2006-088174 20060328
- 主分类号： G11B5/17
- IPC分类号： G11B5/17
摘要：
A thin-film magnetic head is capable of securing an insulating property and minimizing the projection of a recording element section due to heat expansion. The thin-film magnetic head includes a pair of magnetic layers disposed with a predetermined gap therebetween on a surface facing a recording medium. The layers are connected to each other along an inner part in a height direction from the medium-facing surface. A spiral recording coil is disposed between the pair of magnetic layers and wound around a connecting portion of the pair of magnetic layers. The recording coil includes a dense coil portion formed with a pitch smaller than that of the inner part in the height direction so as to be closer to the medium-facing surface than the connecting portion. An organic insulating layer is locally formed to fill coil gaps of the dense coil portion, and coil gaps other than those of the dense coil portion are filled with an inorganic insulating layer.
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