Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-01-04
2005-01-04
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603080, C029S603120, C029S603160, C029S603180, C029S606000, C361S121000, C361S122000, C361S126000, C361S317000, C216S039000, C216S041000, C216S048000, C451S005000, C451S041000, C427S127000, C427S128000
Reexamination Certificate
active
06836956
ABSTRACT:
A method of manufacturing a thin film magnetic head in which a top pole is divided into a pole tip and a tope pole layer, and the pole tip is formed on the flat surface of a bottom pole with a write gap layer in between. An insulating layer is formed in a region adjacent to the pole tip. A first layer of thin film coil is formed in a region wherein the insulating layer is formed. The thin film coil is covered by the insulating layer whose surface is flattened. A surface of the top pole layer facing the recording medium can be formed recessed from a surface of the pole tip facing the recording medium.
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“Edge eliminated head”; Yoshida, M.; Sakai, M.; Fukuda, K.; Yamanaka, N.; Koyanagi, T.; Matsuzaki, M.; Magnetics, IEEE Transactions on , vol.: 29, Issue: 6 , Nov. 1993; pp.: 3837-3839.
Kim Paul D
Oliff & Berridg,e PLC
TDK Corporation
Tugbang A. Dexter
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