Apparatus for recording magnetic impulses perpendicular to the s

Details Apparatus for recording magnetic impulses perpendicular to the s Apparatus for recording magnetic impulses perpendicular to the s

1979-09-26

1981-07-07

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record medium

360110, 427131, 428900, 428212, G11B 566, G11B 502

Patent

active

042778093

ABSTRACT:
Apparatus is disclosed for recording magnetic impulses on a selectively magnetizable medium with such impulses being recorded with their axes of magnetization substantially perpendicular to the surface of the medium utilizing a recording medium having a high magnetic permeability backing layer and an overlying coating of magnetic material having uniaxial anisotropy substantially perpendicular to the surface of the backing layer, and using a unitary magnetic head for both recording and playback with such head positioned adjacent to one side of the recording medium.

REFERENCES:
patent: 3102048 (1963-08-01), Gran et al.
patent: 3185776 (1965-05-01), Camras
patent: 3219353 (1965-11-01), Prentky
patent: 3471272 (1969-10-01), Wilhelm et al.
patent: 3582912 (1971-06-01), Valin et al.
patent: 3738818 (1973-06-01), Stone et al.
patent: 3775178 (1973-11-01), Perrington et al.
patent: 4034410 (1977-07-01), Suzuki et al.
patent: 4069360 (1978-01-01), Yanagisawa et al.
patent: 4075384 (1978-02-01), Suzuki et al.
patent: 4091158 (1978-05-01), Kasuga et al.
Iwasaki et al., The Magnetic Field Distribution of a Perpendicular Recording Head, Mag.-14, No. 5, IEEE Transactions on Magnetics, Sep. 1978, pp. 436-438.
Iwasaki et al., An Analysis for the Magnetization Mode for High Density Magnetic Recording, vol. Mag.-13, No. 5, IEEE Trans. on Mag., Sep. 1977, pp. 1272-1277.

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