Patent ID: 6655244
Filing Date: 2003-12-02
Classification: G11B,Y10T

Abstract:
A centering apparatus for centering a disk including a circular perimeter and a circular central opening concentric with the perimeter; the apparatus comprising:a disk-supporting base, over which the disk is slidable; a plurality of pairs of actuator units disposed adjacent the base; and a center member that is fixed in position relative to the actuator units and is disposed within the central opening of the disk when the disk is on the base; the actuator units of each of the pairs facing each other through the disk, each of the pairs of actuator units including a respective member which moves linearly to come into contact with the disk, the member being movable by a respective motor; whereby the disk is movable by the respective motors of the actuator units so that the central opening of the disk contacts the center member acting as a reference for centering the disk.