Magnetic shield and multitrack magnetic head apparatus using sam

Details Magnetic shield and multitrack magnetic head apparatus using sam Magnetic shield and multitrack magnetic head apparatus using sam

1982-04-01

1985-07-02

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Head

Plural gaps

360129, 360122, G11B 510, G11B 512

Patent

active

045272123

ABSTRACT:
To reconcile a variety of problems associated with multitrack magnetic heads, modified shields therefor were fabricated. Each such shield is comprised of a plurality of laminations of magnetically, and mechanically, soft material bonded together into a unitary stack of appropriate thickness. The laminations are typically of .mu.-metal; and the stacked laminations are preferably provided with copper cladding as is the practice in the art. At the medium bearing surface of the shield, a cutout is provided; and into such cutout a small insert of magnetically soft, mechanically hard, material, e.g. Sendust, is provided.

REFERENCES:
patent: 3663765 (1972-05-01), Schneider
patent: 3863268 (1975-01-01), Ikeda
patent: 4291354 (1981-09-01), Chase
The Complete Handbook of Magnetic Recording, by F. Jorgensen, FIG. 7-44, p. 155, published by Tab Books, Inc.

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