Invention Grant
US07808742B2 Thin-film magnetic head comprising shield/magnetic-pole layer having surface without right nor sharp angle
有权
薄膜磁头包括屏蔽/磁极层,其表面没有正确或锐利的角度
- Patent Title: Thin-film magnetic head comprising shield/magnetic-pole layer having surface without right nor sharp angle
- Patent Title (中): 薄膜磁头包括屏蔽/磁极层,其表面没有正确或锐利的角度
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Application No.: US11781606Application Date: 2007-07-23
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Publication No.: US07808742B2Publication Date: 2010-10-05
- Inventor: Akifumi Kamijima , Hideyuki Yatsu , Hitoshi Hatate , Hisayoshi Watanabe , Atsushi Yamaguchi , Shingo Miyata , Masahiro Saito
- Applicant: Akifumi Kamijima , Hideyuki Yatsu , Hitoshi Hatate , Hisayoshi Watanabe , Atsushi Yamaguchi , Shingo Miyata , Masahiro Saito
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Main IPC: G11B5/31
- IPC: G11B5/31

Abstract:
Provided is a thin-film magnetic head in which the concentration of magnetic flux in the shield layer and the magnetic pole layer is suppressed. The thin-film magnetic head comprises a plurality of magnetic layers that have front surfaces reaching a head end surface on the ABS side. Further in this head, at least one of the plurality of magnetic layers has a shape in which: each of edges corresponding to both side surfaces extends so as to spread obliquely rearward with each other from an end of a straight edge in a track width direction corresponding to the front surface; and the front surface reaching the head end surface has a shape in which upper and lower corner portions in each of both end portions in the track width direction form obtuse angles or rounded shapes.
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