Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2007-07-23
2010-10-05
Blouin, Mark (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
07808742
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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patent: 7019944 (2006-03-01), Matono et al.
patent: 2004/0021985 (2004-02-01), Pokhil et al.
patent: 2008/0019056 (2008-01-01), Ohta et al.
patent: A 2001-76316 (2001-03-01), None
patent: A 2001-256610 (2001-09-01), None
U.S. Appl. No. 11/774,912, filed Jul. 9, 2007, Naoki Ohta et al.
Hatate Hitoshi
Kamijima Akifumi
Miyata Shingo
Saito Masahiro
Watanabe Hisayoshi
Blouin Mark
Oliff & Berridg,e PLC
TDK Corporation
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