Thin film magnetic heads

Details Thin film magnetic heads Thin film magnetic heads

1975-03-10

1976-08-17

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360121, 360127, G11B 516, G11B 527, G11B 514

Patent

active

039757730

ABSTRACT:
In a thin film magnetic writing head structure, a high permeability layer is arranged parallel to the lateral face of a pole piece which is situated in the downstream direction of movement of the magnetic record carrier under the head airgap. Said high permeability layer is magnetostatically de-coupled from the pole piece. This arrangement guides the zero magnetic field lines from the head along the frontal plane of the pole piece and along the lateral face of said piece, thereby drastically reducing the action of de-magnetizing components of the writing flux on the record.

REFERENCES:
patent: 3867368 (1975-02-01), Lazzari

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