Magneto optic data recording system with variable field strength

Details Magneto optic data recording system with variable field strength Magneto optic data recording system with variable field strength

1988-12-14

1991-06-04

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360 59, G11B 1304, G11B 1112

Patent

active

050220179

ABSTRACT:
For magneto-optic data recording, permanent magnets are used to produce a magnetic field with a variable field strength. The field strength is varied by controlled rotation of the magnets about their longitudinal axis, which also allows inversion of the direction of the magnetic field. The magnets are oriented such that their combined fields produce a resultant force continuously substantially perpendicular to the recording medium despite rotation of the magnets.

REFERENCES:
patent: 4748606 (1988-05-01), Naito et al.
patent: 4868802 (1989-09-01), Kobori

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