Disc loading apparatus

Details Disc loading apparatus Disc loading apparatus

1990-06-07

1991-10-15

Trafton, David

Dynamic information storage or retrieval

With particular cabinet structure

Slotted for edgewise insertion of storage disc

369 751, 369 752, 369 772, 360 9902, 360 9906, G11B 3302, G11B 5016, G11B 1704

Patent

active

050580949

ABSTRACT:
A magneto-optical disc recording and/or reproducing apparatus records and/or reproduces a magneto-optical disc rotatably incorporated within a disc cartridge and in which a disc hub formed of a magnetizable metal plate is attached to a central portion of the disc. This magneto-optical disc recording and/or reproducing apparatus is comprised of a rotating device for clamping the disc hub by a magnetic attracting force of a magnet to thereby rotate the disc, a loading device having a cartridge holder for holding a disc cartridge inserted and for loading on the rotating device the magneto-optical disc inserted into the disc cartridge by the up and/or down movement of the cartridge holder, a supporting device for supporting a bias magnetic field generating device so that the bias magnetic field generating device can be freely moved up and down in the direction remote from and/or close to the magneto-optical disc which is clamped by the rotating device as the cartridge holder is moved up and/or down, and a pushing device for pushing a central portion of the magneto-optical disc so that, when the magneto-optical disc is loaded on the disc rotating device by the loading device, a center aperture of the disc hub is engaged with a spindle shaft of the disc rotating device.

REFERENCES:
patent: 4477894 (1984-10-01), Clurman
patent: 4669076 (1987-05-01), Broom et al.
patent: 4731775 (1988-03-01), Katsuyama
patent: 4740939 (1988-04-01), Watanabe
patent: 4745502 (1988-05-01), Takatori
patent: 4796251 (1989-01-01), Hirano
patent: 4797770 (1989-01-01), Takahashi
patent: 4799209 (1989-01-01), Grobben
patent: 4802158 (1989-01-01), Ogusu
patent: 4847826 (1989-07-01), Sakaguchi et al.
patent: 4896312 (1990-01-01), Odawara
Patent Abstracts of Japan No. 63-234443 (Iwata).

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