Process for fabricating thin film magnetic recording heads havin

Details Process for fabricating thin film magnetic recording heads havin Process for fabricating thin film magnetic recording heads havin

1988-04-13

1989-06-13

Hall, Carl E.

Coating processes

Electrical product produced

Coil or winding

29603, 427131, 360119, G11B 542, B05D 512

Patent

active

048391972

ABSTRACT:
A process for fabricating a thin film magnetic head to achieve improved dimensions and tolerances of the pole tip portion of the head. A lower thin film magnetic layer comprising the lower pole tip is first formed followed by a thin layer defining the gap of the head. A thin film magnetic layer is then deposited only in the vicinity of the pole tip to define the upper pole of the head. Following this, successive layers of insulation and coils are deposited. Finally, a top thin film magnetic layer is deposited. This top layer contacts the already formed layer comprising the top pole piece.

REFERENCES:
patent: 4190872 (1980-02-01), Jones, Jr. et al.
patent: 4242710 (1980-12-01), Hempstead et al.
patent: 4511942 (1985-04-01), Valstyn
patent: 4546541 (1985-10-01), Reid
patent: 4589042 (1986-05-01), Anderson et al.
patent: 4652954 (1987-03-01), Church
patent: 4689877 (1987-09-01), Church

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