Patent ID: 8348255
Filing Date: 2013-01-08
Classification: H01L

Abstract:
1. A disk holding apparatus comprising: a plurality of movable holding claws arranged uniformly spaced in a circumferential direction of a disk having a notch therein, each of the movable holding claws having a holding part formed at one end thereof so as to abut an outer circumference of the disk; a movable claw driving unit that moves each of the movable holding claws, respectively, in a radial direction that passes through a center of the disk, the movable holding claws being moved between a holding position where the holding part of the movable holding claw abuts the outer circumference of the disk and a release position where the holding part is separated from the outer circumference of the disk; an inner ring on which the movable holding claws are supported; and an outer ring secured to the inner ring, wherein the movable holding claws are biased outwardly in the radial direction by a first spring, and wherein the movable claw driving unit includes a relative rotation generating unit that rotates the inner ring and the outer ring relative to each other.