Erase head

Details Erase head Erase head

1977-03-30

1979-02-20

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Erase

G11B 512

Patent

active

041410521

ABSTRACT:
An erase head comprises a magnetizable material which can be magnetized into a permanent magnet having N- and S-poles. The magnetization takes place in a manner such that one of the poles which is the first to be contacted by a magnetic medium to be erased is magnetized to produce a field strength which is less than the magnetic field strength produced by the other pole.

REFERENCES:
patent: 3427710 (1969-02-01), Williams
patent: 3947891 (1976-03-01), Saito

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