Thermomagnetic recording device

Details Thermomagnetic recording device Thermomagnetic recording device

1980-07-10

1982-12-07

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Thermomagnetic recording or transducers

360119, 360122, G11B 502, G11B 522, G11B 525

Patent

active

043630529

ABSTRACT:
A thermomagnetic recording device for recording information on a magnetic recording medium having magnetic anisotropy across the thickness thereof comprises a laser beam irradiation mechanism applying a laser beam to said magnetic recording medium to reduce the coercive force thereof, and a single-pole magnetic head including a ferromagnetic thin membrane having an end face located opposite to said magnetic recording medium, a main body supporting said thin membrane, and a coil applying a perpendicular magnetic field to said recording medium through said end face of said thin membrane.

REFERENCES:
patent: 3230517 (1966-01-01), Supernowicz
patent: 3313889 (1967-04-01), Machinski
patent: 3521294 (1970-07-01), Treves
patent: 3582570 (1971-06-01), Cushner
patent: 3626114 (1971-12-01), Lewicki et al.
patent: 3676867 (1972-07-01), Bacon et al.
patent: 3778791 (1973-12-01), Lewicki et al.
patent: 4138685 (1979-02-01), Kellermen
patent: 4251842 (1981-02-01), Iwasaki et al.
"CrO.sub.2 -Based Thermomagnetic Information & Retrieval Systems" by R. K. Waring Jr, Jour. Appd. Physics, vol. 42H4, 3/15/71, pp. 1763-1768.

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