Compound type magnetic head

Details Compound type magnetic head Compound type magnetic head

1983-03-11

1986-07-22

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 512, G11B 522

Patent

active

046023070

ABSTRACT:
A compound type magnetic head comprising a main core (11) made of a magnetic material high in saturation flux density and low in inherent resistance, such as sendust or amorphous material and two auxiliary cores (12) sandwiching the main core (11) therebetween. The auxiliary cores (12) each consist of a first member made of a material high in inherent resistance such as ferrite and a second member made of a low melting point glass portion 42 formed on the front side of the first member, namely on the side abutting against the magnetic tape.

REFERENCES:
patent: 4115827 (1978-09-01), Gooch
patent: 4387410 (1983-06-01), Takanohashi et al.
patent: 4404608 (1983-09-01), Yasuda et al.
patent: 4475137 (1984-10-01), Yasuda et al.
"Sendust Head for Video Cassette Recorders", Sanyo Technical Review, vol. 14, No. 2, Aug. 1982, pp. 66-73.
"Ultra-High Density Recording with Sendust Video Head and High Coercive Tape", IEEE Transactions on Magnetics, vol. Mag-17, No. 6, Nov., 1981, pp. 3114-3116.

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