Patent ID: 6510122
Filing Date: 2003-01-21
Classification: G11B

Abstract:
A disk drive device comprising:a rotation driving mechanism for rotating a disk-shaped storage medium having an information recording surface; a head for at least reading an information on said storage medium; support means composed of elastic members holding a base plate, on which said rotation driving mechanism and said head are mounted; an unbalance correcting mechanism for correcting unbalance of rotatingly movable parts including said storage medium, said unbalance correcting mechanism being provided with a rolling groove and correcting means rollingly movable within said groove; and rolling motion auxiliary means provided in said rolling groove for assisting in rolling motion of said correcting means, wherein said auxiliary means comprises an annular-shaped elastic member provided at an outer side surface thereof with or without irregularities, and is provided on an inner peripheral side surface of said rolling groove.