Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2007-06-14
2010-12-07
Watko, Julie Anne (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125090, C360S125100
Reexamination Certificate
active
07848055
ABSTRACT:
The present invention relates to a perpendicular recording magnetic head. A main magnetic pole film of a perpendicular recording element is a plated film formed on an electrode film and having a small width portion and a large width portion. The small width portion is a portion for emitting a perpendicular magnetic field from a front end thereof, while the large width portion is portion being continuous with a rear end of the small width portion and having an increased width. The electrode film is different in film thickness between beneath a portion of the plated film forming at least the front end of the small width portion and beneath a portion of the plated film forming the large width portion.
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Miyata Shingo
Noguchi Kiyoshi
Sano Masashi
Yamaguchi Atsushi
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
TDK Corporation
Watko Julie Anne
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