Method of making a thin film magnetic head having good low frequ

Details Method of making a thin film magnetic head having good low frequ Method of making a thin film magnetic head having good low frequ

1983-03-28

1983-12-13

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427132, 427265, 427272, B05D 512

Patent

active

044205058

ABSTRACT:
To provide a thin film magnetic head having good low frequency response, the invention teaches the use of a movable mask technique whereby a first deposited magnetic film is provided with a tapered, or knife-, edge. Gap spacer material is then deposited on the film knife-edge. Thereafter, a second magnetic film is deposited atop the knife-edge, as well as on the same substrate that supports the first magnetic film. What results, therefore, is a slant gap thin film magnetic head having good low frequency response.

REFERENCES:
patent: 2325844 (1943-08-01), Fischer
patent: 2543483 (1951-02-01), Barrett
patent: 2635149 (1953-04-01), Cain
patent: 2653189 (1953-09-01), Camras
patent: 2697754 (1954-12-01), Ranger
patent: 2832839 (1958-04-01), Muffly
patent: 4219854 (1980-08-01), Church et al.
patent: 4219855 (1980-08-01), Jones, Jr.

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