Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2006-11-28
2006-11-28
Chen, Tianjie (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
07142392
ABSTRACT:
A thin film head having reading part and recording part having an upper magnetic pole front end layer and a lower magnetic pole having a lower magnetic main layer, a lower magnetic pole front end portion on the lower magnetic main layer, and a projection step portion on the lower magnetic pole front end portion. The upper magnetic pole front end layer has a magnetic pole expansion position and a length from an air bearing surface to the magnetic pole expansion position is less than a length from the air bearing surface to gap depth position of the lower magnetic pole front end portion.
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Fukui Hiroshi
Fuyama Moriaki
Ohtomo Shigekazu
Yoshida Nobuo
Antonelli, Terry Stout and Kraus, LLP.
Chen Tianjie
Hitachi Global Storage Technologies Japan Ltd.
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