Thin film magnetic head having good low frequency response

Details Thin film magnetic head having good low frequency response Thin film magnetic head having good low frequency response

1981-02-04

1983-08-16

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Core

29603, 360119, 360122, G11B 522, G11B 516, G11B 542

Patent

active

043994792

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: Re29326 (1977-07-01), Lazzari et al.
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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