| 摘要 |
A double-sides playable disc player for playing back an information recording disk composed of a pair of circular base plates having signal recording layers, respectively, has a disc centering device for centering the information recording disc with respect to a turntable. The disc centering device comprises a first centering member fittable into the central hole of one of the circular base plates for centering the circular base plate with respect to the turntable, a second centering member fittable into the central hole of the other circular base plate for centering the other circular base plate with respect to the turntable, and a drive assembly for moving the first and second centering members. Even if the circular base plates are displaced with respect to each other, they can accurately be centered with respect to the turntable at all times. The components of the drive assembly double as components of a disc clamp mechanism, so that the disc player is of a low cost.
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