Optical-disc apparatus

Details Optical-disc apparatus Optical-disc apparatus

1982-07-26

1988-08-30

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 2504

Patent

active

047681853

ABSTRACT:
The invention relates to an apparatus for playing back and/or recording information on rotary optical discs comprising a device for clamping the optical disc in position on a disc aligner mounted on a rotating spindle. The clamping device comprises a disc loader which moves with clearance in a support which is movable between a rest position and an operating position. The disc loader exerts a clamping force on the disc during operation due to a magnetic force between magnets secured to the disc loader and the support. Rattling and an oblique position of the disc loader are precluded in that the magnets are arranged to exert a magnetic force which acts between the support and the disc loader so as to clamp the disc loader against the support when the latter is not in its operating position.

REFERENCES:
patent: 3156472 (1964-11-01), Brock
patent: 4068851 (1978-01-01), Yamamura
patent: 4218065 (1980-08-01), van der Hoek et al.
patent: 4232870 (1980-11-01), Iemeaschot

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