Magnetic erasing head with gaps utilizing high flux density and

Details Magnetic erasing head with gaps utilizing high flux density and Magnetic erasing head with gaps utilizing high flux density and

1978-06-05

1979-12-25

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Erase

360120, 360121, G11B 5251, G11B 527

Patent

active

041808355

ABSTRACT:
In a magnetic erasing head having a first gap and a second gap formed respectively between ferrite cores, one or more magnetic material layers (Fe-layers) are arranged in the gaps respectively, and the magnetic material layers have the magnetic flux density (B.sub.10) of more than 5000 gauss, the permeability of more than 5000 and the thickness of 5.mu. to 30.mu..

REFERENCES:
patent: 2535712 (1950-12-01), Wolfe
patent: 2702835 (1955-02-01), Camras
patent: 3098126 (1963-07-01), Kaspaul
patent: 3246384 (1966-04-01), Vice
patent: 3449529 (1969-06-01), Camras
patent: 3508014 (1970-04-01), Mersing
patent: 3519763 (1970-07-01), Lode
patent: 3526725 (1970-09-01), Camras
patent: 3641281 (1972-02-01), Varadi et al.
patent: 3882544 (1975-05-01), Hughes

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