Disc device

摘要

In order to solve such an problem that primary rotational vibration which is caused by unbalance of the weight of a disc and which has been rapidly increased due to high speed rotation at present, vibrates a pick-up system, causing hindrance to reproduction signals, and produces noise and vibration of the device itself while deteriorates the reliability of the disc device, an unbalance correcting mechanism composed of a rotary pathway (17) having a rotating center coincident with the rotating center of the disc and correcting members (7) movable in the rotary pathway is provided in a holding means for holding the disc, and a support member for holding the rotary system and the pick-up system, and a casing are supported to each other by vibration proof legs having its natural frequency which is set to be higher than 30 Hz but lower than 70 Hz, and its amplitude amplification which is set to be higher than 80 dB at a resonant point, thereby it is possible to correct unbalance and restrain generation of vibration.