Magneto-optical disc recording and/or reproducing apparatus

Details Magneto-optical disc recording and/or reproducing apparatus Magneto-optical disc recording and/or reproducing apparatus

1991-10-17

1995-01-24

Pascal, Robert J.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 752;13, G11B31304

Patent

active

053847571

ABSTRACT:
A magneto-optical disc recording and/or reproducing apparatus comprises a disc cartridge loading portion on which a disc cartridge to housing an magneto-optical disc is loaded; a disc rotary drive means for rotating the magneto-optical disc; an optical pickup which is moved in a radial direction of the magneto-optical disc for recording and/or reproducing information signals on and from the magneto-optical disc; magnetic field generating means which is disposed in a position opposite to the optical pickup with respect to the magneto-optical disc and is moved in a radial direction of the magneto-optical disc in synchronization with the movement of the optical pickup in a radial direction of the magneto-optical disc for recording informational signals on the magneto-optical disc together with the optical pickup; lifting means for moving the magnet field generating means perpendicularly toward and away from the surface of the magneto-optical disc; loading means for loading the disc cartridge upon the cartridge loading portion and for loading the magneto-optic disc housed in the disc cartridge on the disc rotary drive means, such that magnetic field generating means is moved from a position remote from the magneto-optical disc to a position close to the magneto-optical disc by the lifting means in association with the loading operation of the disc cartridge on the cartridge loading portion by the loading means.

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Applied Optics, vol. 25, No. 4, Feb. 1986, New York, US, pp. 483-489; Ojima et al.: "Compact magnetooptical disk for coded data storage".
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