发明授权
US07050248B1 Method and apparatus for patterning magnetic media by contact printing
有权
用于通过接触印刷图案化磁性介质的方法和装置
- 专利标题: Method and apparatus for patterning magnetic media by contact printing
- 专利标题(中): 用于通过接触印刷图案化磁性介质的方法和装置
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申请号: US10429800申请日: 2003-05-06
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公开(公告)号: US07050248B1公开(公告)日: 2006-05-23
- 发明人: Li-Ping Wang
- 申请人: Li-Ping Wang
- 申请人地址: US CA Scotts Valley
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Scotts Valley
- 代理机构: McDermott Will & Emery LLP
- 主分类号: G11B5/86
- IPC分类号: G11B5/86
摘要:
An apparatus for forming a magnetic transition pattern in a magnetic material by contact printing, comprising: (a) a stamper having an imprinting surface comprising a plurality of projections and depressions arranged according to the magnetic transition pattern, the stamper being formed of at least one high saturation magnetization, high permeability magnetic material; (b) means for supporting a workpiece such that a surface thereof comprised of the magnetic material is in contact with the imprinting surface; (c) magnet means for applying a unidirectional re-alignment magnetic field to the stamper and workpiece to effect selective re-alignment of magnetic domains of portions of the magnetic material facing the depressions of the imprinting surface, such that the pattern of selectively re-aligned magnetic domains forms a pattern replicating the pattern of projections and depressions; and (d) means for applying sufficient pressure to the stamper and workpiece to overcome magnetic attraction between the stamper and the magnet means to thereby maintain full contact therebetween.
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