发明授权
US07028743B1 High field contrast magnetic stampers/imprinters for contact patterning of magnetic media
失效
用于磁介质接触图形化的高场对比磁压模/打印机
- 专利标题: High field contrast magnetic stampers/imprinters for contact patterning of magnetic media
- 专利标题(中): 用于磁介质接触图形化的高场对比磁压模/打印机
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申请号: US10429799申请日: 2003-05-06
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公开(公告)号: US07028743B1公开(公告)日: 2006-04-18
- 发明人: Li-Ping Wang , David Kuo , Jing Gui , Koichi Wago
- 申请人: Li-Ping Wang , David Kuo , Jing Gui , Koichi Wago
- 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: B22D23/00
- IPC分类号: B22D23/00 ; B22D25/00
摘要:
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.
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