Magnetic head with magnetic pole minimum Fe content...

Details Magnetic head with magnetic pole minimum Fe content... Magnetic head with magnetic pole minimum Fe content...

2006-02-14

2006-02-14

Renner, Craig A. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

C360S119050

Reexamination Certificate

active

06999276

ABSTRACT:
A magnetic head includes an upper magnetic pole layer formed by electroplating in which the density of the impressed current is increased in stages every predetermined period of time. The upper magnetic pole layer contains at least 60 mass % of Fe. The difference between the maximum Fe content and the minimum Fe content of the upper magnetic pole layer within 0.3 μm from the interface with the gap layer is 6 mass % or less.

REFERENCES:
patent: 2002/0008936 (2002-01-01), Kawasaki et al.
patent: 2002/0071209 (2002-06-01), Watanabe et al.
patent: 10-241125 (1998-09-01), None
patent: 2001-6931 (2001-01-01), None
patent: 2001-209915 (2001-08-01), None
Copy of Office Action dated Jan. 11, 2005 for Japanese Patent Application No. 2001-133985.

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