发明授权
- 专利标题: Submicron track-width pole-tips for electromagnetic transducers
- 专利标题(中): 用于电磁换能器的亚微米轨道宽度极尖
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申请号: US09500380申请日: 2000-02-08
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公开(公告)号: US07023658B1公开(公告)日: 2006-04-04
- 发明人: Kenneth E. Knapp , Ronald A. Barr , Zhupei Shi , Billy W. Crue, Jr.
- 申请人: Kenneth E. Knapp , Ronald A. Barr , Zhupei Shi , Billy W. Crue, Jr.
- 申请人地址: US CA Fremont
- 专利权人: Western Digital (Fremont), Inc.
- 当前专利权人: Western Digital (Fremont), Inc.
- 当前专利权人地址: US CA Fremont
- 代理机构: Sawyer Law Group LLP
- 代理商 Joshua G. Harrison, Esq.
- 主分类号: G11B5/31
- IPC分类号: G11B5/31 ; G11B5/187 ; G11B5/265 ; G11B5/39
摘要:
A trailing pole-tip for an electromagnetic transducer is formed as a layer oriented substantially perpendicular to other layers of the transducer, allowing the pole-tip to be made much thinner than conventional pole-tips. The novel pole-tip is formed on an edge or sidewall of a base layer instead of being formed on top of an existing layer. Potential errors in pole-tip thickness are much less than standard error tolerances for conventional pole-tip thickness. Having a greatly reduced pole-tip width significantly reduces the track width so that many more tracks can fit on a media surface, providing a large increase in areal density.
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