发明授权
- 专利标题： Radial magnetic field reset system for producing single domain soft magnetic underlayer on perpendicular magnetic recording medium
- 专利标题（中）： 用于在垂直磁记录介质上产生单畴软磁层的径向磁场复位系统
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申请号： US11145197申请日： 2005-06-03
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公开(公告)号： US07910159B2公开(公告)日： 2011-03-22
- 发明人: Hong-Sik Jung
- 申请人： Hong-Sik Jung
- 申请人地址： US CA San Jose
- 专利权人： WD Media, Inc.
- 当前专利权人： WD Media, Inc.
- 当前专利权人地址： US CA San Jose
- 主分类号： G11B5/64
- IPC分类号： G11B5/64
摘要：
A radial magnetic field reset apparatus including a housing having a cavity with a soft magnet rod disposed at its center and a permanent magnet disposed around the cavity. The cavity and thickness of the soft magnet rod are sized to permit a cassette of disks to be inserted into the housing with the soft magnet rod disposed within the inner diameter holes of the disks contained in the cassette. The soft magnet rod at the center of the housing attracts the magnetic field generated by the permanent magnet, which results in a substantially uniform, radial magnetic field inside the housing.
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