Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2007-07-03
2007-07-03
Evans, Jefferson (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S122000
Reexamination Certificate
active
11068967
ABSTRACT:
A thin film magnetic head is provided to reduce excess magnetostatic leakage field in order to generate a sufficient recording magnetic field. The pole end portion has a width to define a recording track width. The pole rear portion has one end which is magnetically connected with the pole end portion at or in the vicinity of an edge portion of an insulating film and defines a first flare point, the other end which is connected with the upper yoke portion and defines a second flare point, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point toward the first flare point. The width of the pole end portion at the first flare point is smaller than the maximum width of the pole rear portion.
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Hirabayashi Hiraku
Narushima Shin
Noguchi Kiyoshi
Oike Taro
Sakamoto Takamitsu
Evans Jefferson
TDK Corporation
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