Video disc player for playing records of different thickness

Details Video disc player for playing records of different thickness Video disc player for playing records of different thickness

G - Physics

11

B

352/32.3

G11B 7/00 (2006.01) G11B 7/0037 (2006.01) G11B 17/032 (2006.01)

Patent

CA 1071767

ABSTRACT A record player, more specifically a video player for playing a disc-shaped record with a central hole and which is made of a transparent material, which record has a transparent surface at one side and at its other side a surface which is provided with information tracks which are optically readable with the aid of a read beam and are covered by a light-reflecting layer. In order to enable both relatively thick rigid records and relatively thin flexible records to be played or. the same record player, the invention provides a removable transparent adapter disc, which together with a flexible record can be positioned on the record player and driven in a rotary fashion. In order to prevent dust particles from being trapped between the flexible record and the transparent adapter disc, the adapter disc may be provided with a central recess with a number of air admission apertures at the circumference thereof, so that during operation a thin film of air is formed between the flexible record and the adapter disc.

247441

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