Magnetic field generator in which an end face of a magnetic mate

Details Magnetic field generator in which an end face of a magnetic mate Magnetic field generator in which an end face of a magnetic mate

1994-10-28

1996-01-16

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360103, 360124, G11B 1304

Patent

active

054854350

ABSTRACT:
A magnetic field generator includes a base, a plurality of magnetic field generating cores formed on the base, magnetic field generating coils respectively wound around the plurality of magnetic field generating cores, a magnetic material member being disposed between adjacent twos of the plurality of magnetic field generating cores, and a drive device for driving the magnetic field generating coils. Also, a magneto-optical recording apparatus includes an optical head for irradiating a light beam to a magneto-optical recording medium and the magnetic field generator. The magnetic field generator can set the maximum modulation frequency at a higher value while ensuring a scope of the effective vertical magnetic field sufficiently and efficiently, to thereby permit multi-recording.

REFERENCES:
patent: 4369476 (1983-01-01), Karsh
patent: 4706232 (1987-11-01), Funada et al.
patent: 4750159 (1988-06-01), Yoda
patent: 5043960 (1991-08-01), Nakao et al.
patent: 5103351 (1992-04-01), Kazama et al.
Patent Abstracts of Japan, Kokai No. 01-245540, vol. 13, No. 583, Dec. 1989.

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