Erasing apparatus employing multiple magnetically premeable memb

Details Erasing apparatus employing multiple magnetically premeable memb Erasing apparatus employing multiple magnetically premeable memb

1983-12-12

1986-04-08

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360118, G11B 503, G11B 512

Patent

active

045816611

ABSTRACT:
The disclosed erasing apparatus serves for erasing a signal from individual recording tracks of a magnetic recording medium. A soft magnetic and high permeability member forms a magnetic circuit which passes through a magnetic head and the recording medium. A suitable arrangement causes either the magnetic head or the high permeability member to produce a magnetic field for erasing the signal.

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McKnight-Journal of Audio Engg. Society 6/63, vol. 11, No. 3, pp. 223-233.
I.B.M.T.D.B. vol. 9, No. 7 12/66, p. 764.

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