Disc player
AssigneeSony Corporation
InventorsTsutomu Toyoguchi, Yoshiro Watanabe
Life of this patent
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Abstract
A compact disc player is disclosed, in which in order to protect a disc from being dirtied and damaged upon unloading and loading, at least a pair of rollers for holding therebetween and transporting a disc inserted thereinto are each formed to be of such a taper-shape that the diameter of each roller is made small at the central portion thereof and is gradually increased therefrom to both side portions thereof, thus each roller being in contact only with the peripheral edge portion of the inserted disc.
Claims11
A disc player comprising a housing having a front wall with an elongated opening extending laterally thereacross for insertion of a disc therethrough into said housing;
- a spindle motor in said housing connected to a rotatable disc table disposed horizontally at a level below said elongated opening;
- a pair of upper and lower rollers extending laterally within said housing between said front wall and said disc table, said upper roller being disposed at a level above said elongated opening so as to be engageable from above with a disc inserted through said opening, said lower roller being disposed below said upper roller, each of said upper and lower rollers having relatively large diameter end portions at the opposite ends thereof and tapering gradually from said large diameter end portions to a relatively small diameter portion centered therebetween;
- means mounting said lower roller for substantially vertical movement and being biased upwardly for normally urging said lower roller against said upper roller at said end portions thereof so that a disc inserted through said opening is engaged from above and below, at the periphery of the inserted disc, by said upper and lower rollers, respectively, so long as said lower roller is free to be normally urged upwardly;
- drive means for rotating said lower roller in a direction to cause the inserted disc engaged by said upper and lower rollers to be displaced therebetween to a position centered over said disc table;
- stop means limiting the movement of the disc by said upper and lower rollers at said position centered over the disc table;
- and means powered by said drive means in response to engagement of a disc with said stop means for moving said lower roller downwardly to a position below said level of the disc table for depositing the disc on said disc table, said drive means continuing to rotate said lower roller during the downward movement thereof for ensuring maintenance of the centered relation of the disc to said table.
Dependencies are inferred from the claim text.