Apparatus for applying a magnetic field to a magneto-optical dis

Details Apparatus for applying a magnetic field to a magneto-optical dis Apparatus for applying a magnetic field to a magneto-optical dis

1996-07-25

1997-07-29

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100, G11B 1304

Patent

active

056527390

ABSTRACT:
An external magnetic field application apparatus is configured such that a magnet, which has a pair of magnetic poles of opposite polarities disposed side by side on a plane, is provided in an arm pivotable around a pin. A moving means, which moves the arm so that the desired one of the pair of magnetic poles is directly opposite a position on a magneto-optical disk on which position a light beam is incident, is constructed of a driving coil provided in the arm and a driving permanent magnet assembled to a yoke assembly so as to be directly opposite the driving coil.

REFERENCES:
patent: 5043972 (1991-08-01), Kurihara et al.
patent: 5291345 (1994-03-01), Umeda et al.
patent: 5434831 (1995-07-01), Ishii et al.
patent: 5517472 (1996-05-01), Miyatake et al.

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