Patent ID: 6813236
Filing Date: 2004-11-02
Classification: G11B

Abstract:
An optical disk apparatus, comprising:an optical head for recording data to or reproducing data from a disk having a recording region ranging from an outer circumference portion to an inner circumference portion; a first guide member having a first axis substantially parallel to the disk, for supporting the optical head in such a manner that the optical head can be moved along the first axis from an end of the outer circumference portion to an end of the inner circumference portion; a second guide member for limiting rotation of the optical head about the first axis; a rack provided on the optical head, having a reference pitch line substantially parallel to the first axis; a pinion for moving the optical head by the pinion being engaged with the rack and being rotated; and a pressing member for pressing the rack toward the pinion, wherein the vector of a force exerted by the pinion on the rack in response to the pressing member pressing the rack toward the pinion substantially intersects the first axis.