Dynamic magnetic information storage or retrieval – Head – Core
Patent
1998-03-19
2000-06-06
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Core
G11B 5147
Patent
active
060726709
ABSTRACT:
A thin film magnetic head has, on the rear side of one and the other magnetic poles 2, 5 in the shape of a film formed on a substrate, a coil layer around a connection between both the magnetic poles, and on the end side of one and the other magnetic poles, a magnetic gap layer 3 between both the magnetic poles, and a non-magnetic track width regulating member 8 is provided on the opposite sides of both the magnetic poles 2, 5 and the magnetic gap layer 3, wherein the end of each track width regulating member 8 is positioned between the ends close to and distant from the magnetic gap layer in the other magnetic pole, and the other magnetic pole 5 formed by plating covers partially at least a portion of the end of each track width regulating member, or the end surfaces close to and distant from the magnetic gap layer in the other magnetic pole 5 are not parallel to each other. Thus, both the magnetic poles 2, 5 in the gap portion are formed to have the uniform and small width with high precision, resulting in prevention of side-fringing.
REFERENCES:
patent: 5649351 (1997-07-01), Wade
patent: 5802700 (1998-09-01), Chen
Furuichi Shinji
Yoshimura Kuniaki
Heinz A. J.
Hitachi Metals Ltd.
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