Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-07-05
2008-12-23
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125130
Reexamination Certificate
active
07468863
ABSTRACT:
A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer includes a base magnetic pole part comprising the magnetic pole end part and a base depression distanced farther from the medium-opposing surface than the magnetic pole end part, and an embedded magnetic pole part buried in the base depression and joined to the base magnetic pole part. The thin-film magnetic head structure includes a yoke magnetic pole part joined to the base magnetic pole part and embedded magnetic pole part at a position distanced farther from the medium-opposing surface than the recording gap layer, and an intervening insulative film disposed between the embedded magnetic pole part and yoke magnetic pole part at a position distanced farther from the medium-opposing surface than the recording gap layer.
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Horinaka Takehiro
Ishizaki Kazuo
Ito Hiroyuki
Sasaki Yoshitaka
Headway Technologies Inc.
Miller Brian E
Oliff & Berridg,e PLC
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