Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2007-09-25
2007-09-25
Evans, Jefferson (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S125330, C360S319000, C360S324200
Reexamination Certificate
active
11079677
ABSTRACT:
A composite type thin-film magnetic head is provided, which comprises: a MR read head element having an upper shield layer, a lower shield layer, an MR layer in which a sense current flows in a direction perpendicular to a surface of the layer through the upper shield layer and the lower shield layer; an inductive write head element formed on the MR read head element, having an upper magnetic pole layer, a recording gap layer, a lower magnetic pole layer where end portion is opposed to an end portion of the upper magnetic pole layer through the recording gap layer, and a write coil; and a capacitance C12between the write coil and the upper shield layer, set to 0.1 pF or less.
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Chinese Office Action, with English-language translation, dated Dec. 22, 2006.
Hachisuka Nozomu
Kasahara Noriaki
Kiyono Hiroshi
Saruki Shunji
Evans Jefferson
Frommer & Lawrence & Haug LLP
TDK Corporation
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