Thin-film magnetic head having slider body formed of ferrite

Details Thin-film magnetic head having slider body formed of ferrite Thin-film magnetic head having slider body formed of ferrite

1992-06-09

1994-03-22

Casaregola, Louis J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360126, G11B 510

Patent

active

052969827

ABSTRACT:
A thin-film magnetic head including: a slider body formed of a ferrite material and having air bearing portions on one major surface thereof on which a magnetic recording medium is slidable; a non-magnetic layer formed in the slider body such that the non-magnetic layer is located at least on a trailing end face of each of the air bearing portions, the non-magnetic layer having a thickness of at least 20 .mu.m; a head portion including an upper and a lower magnetic layer and a coil which are positioned within an area of the non-magnetic layer. The lower magnetic layer, the coil and the upper magnetic layer are laminated on the non-magnetic layer such that the upper and lower magnetic layers constitute a closed magnetic path, and such that a magnetic gap is formed between the upper and lower magnetic layers and is open in a top face of each air bearing portion.

REFERENCES:
patent: 4219853 (1980-08-01), Albert et al.
patent: 4893203 (1990-01-01), Ezaki et al.
patent: 5094897 (1992-03-01), Morita et al.
patent: 5198949 (1993-03-01), Narisawa et al.
Patent Abstracts of Japan, vol. 9, No. 170 (P-373) Jul. 16, 1985.
Patent Abstracts of Japan, vol. 7, No. 262 (P-238) Nov. 22, 1983.
IBM Technical Disclosure Bulletin, vol. 25, No. 7A, Dec. 1982.
2311 Fujitsu Scientific & Technical Journal, vol. 26, No. 4, Feb. 1991, pp. 353-364.

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