发明申请
US20070139817A1 Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disc drive
有权
用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器
- 专利标题： Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disc drive
- 专利标题（中）： 用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器
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申请号： US11591504申请日： 2006-11-02
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公开(公告)号： US20070139817A1公开(公告)日： 2007-06-21
- 发明人: Kei Hirata , Kiyoshi Noguchi
- 申请人： Kei Hirata , Kiyoshi Noguchi
- 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
- 优先权： JP2005-361166 20051215
- 主分类号： G11B5/147
- IPC分类号： G11B5/147
摘要：
A magnetic head comprises: a medium facing surface; a coil for generating a magnetic field corresponding to data to be written on a recording medium; and a pole layer allowing a magnetic flux corresponding to the field generated by the coil to pass therethrough, and generating a write magnetic field for writing the data on the recording medium by means of a perpendicular magnetic recording system. The pole layer incorporates a track width defining portion and a wide portion. The track width defining portion has an end face that is located in the medium facing surface and that defines the track width. The maximum width of the wide portion is greater than the track width and equal to or greater than the length of the wide portion taken in the direction orthogonal to the medium facing surface. When the coil is generating no magnetic field, in the end face of the track width defining portion, there exist first and second regions in which the directions of components of magnetization orthogonal to the medium facing surface are opposite.
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