Magneto-optical recording system utilizing a leakage magnetic fi

Details Magneto-optical recording system utilizing a leakage magnetic fi Magneto-optical recording system utilizing a leakage magnetic fi

1985-02-13

1987-06-09

Cardillo, Raymond F.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 45, 360114, 365121, G11B 502, G11B 1110

Patent

active

046725946

ABSTRACT:
In a magneto-optical file memory wherein a storage medium having a vertical magnetic film is irradiated with a laser beam to reverse a magnetization direction of the magnetic film, thereby to write and/or erase information, and a rotation of polarizable face of reflected light from the storage medium is detected, thereby to reproduce information; a magneto-optical file memory wherein a sense of a leakage magnetic field of an actuator which controls an optical system for condensing the laser beam on the storage medium is set to be the same as a sense of initial magnetization of the magnetic film of the storage medium.

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