Alignment of magnetic poles of thin film transducer

Details Alignment of magnetic poles of thin film transducer Alignment of magnetic poles of thin film transducer

1995-07-05

1996-11-26

Gorgus, Kathryn

Coating processes

Magnetic base or coating

Magnetic coating

4274432, 216 22, 216 41, 216 66, 205119, 205122, 20419234, B05D 512, B05D 118, C25D 502, C23C 1432

Patent

active

055783422

ABSTRACT:
A process for producing a thin film magnetic head uses the upper magnetic pole as a self-aligning mask for partially trimming the lower magnetic pole, wherein the yoke and pole tip regions to be trimmed are processed by separate and distinct photolithographic steps, thereby achieving noncritical alignment in the yoke area, while maintaining critical alignment in the pole tip region which includes the transducing gap.

REFERENCES:
patent: 4436593 (1984-03-01), Osborne et al.
patent: 5314596 (1994-05-01), Shukovsky et al.
patent: 5438747 (1995-08-01), Krounbi et al.

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