Magnetic head having a jagged-edged gap, and method for producin

Details Magnetic head having a jagged-edged gap, and method for producin Magnetic head having a jagged-edged gap, and method for producin

1977-12-05

1980-02-12

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Erase

360119, G11B 525

Patent

active

041886496

ABSTRACT:
An AC magnetic erase head having improved AC erase characteristics, the magnetic head being formed of two half core elements of a magnetic material, preferably ferrite, defining an irregular edged or jagged-edged gap, and including a non-magnetic substance, preferably glass, within the gap. The magnetic head is preferably produced by thermally etching ferrite magnetic material forming the half core elements by means of relatively prolonged heat soak at an elevated temperature.

REFERENCES:
patent: 2945919 (1960-07-01), Neumann
patent: 3217305 (1965-11-01), Hanson
patent: 3494026 (1970-02-01), Sugaya
patent: 3810245 (1974-05-01), Ozawa et al.

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