Photo-magnetic disk driving apparatus

Details Photo-magnetic disk driving apparatus Photo-magnetic disk driving apparatus

1991-02-20

1993-11-02

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360137, G11B 1304, G11B 1112, G11B 1110

Patent

active

052589650

ABSTRACT:
Photo-magnetic disk driver for recording, playing back, or erasing information on a photo-magnetic disk in a cartridge. The disk driver has a driver to rotate the photo-magnetic disk at a driving position, a generator of a magnetic field having a direction perpendicular to a surface of the photo-magnetic disk, a laser beam generator to irradiate a laser beam onto the disk surface so that the temperature of the irradiated portion of the surface is increased, a disk receiver of the cartridge. This disk driver includes a loading path to the driving position, and a support for moving the generator between a first position where the generator is inserted into the loading path, and a second position where the generator is outside of the loading path, wherein the generator is at the first position before the cartridge is received by the receiver.

REFERENCES:
patent: 4837758 (1989-06-01), Motoyama et al.
patent: 4984225 (1991-01-01), Ando
patent: 4993009 (1991-02-01), Shiho
patent: 5027334 (1991-06-01), Yamanaka et al.
patent: 5060207 (1991-10-01), Kaneda et al.
patent: 5103435 (1992-04-01), Nemoto et al.

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