| 摘要 |
PROBLEM TO BE SOLVED: To arrange an optical disk constituted by sticking two optical disks together, at a proper position on a turntable regardless of a defect in sticking. SOLUTION: The optical disk drive is equipped with the turntable 10 where an optical disk 1 is arranged, a disk hold part 20 which is provided protruding from the center part of the turntable 1 and engages the loading hole 9 of the optical disk 1, and a clamp member 21 which is provided at part of the peripheral surface of the disk hold part 20, freely movable in the radial direction, and energized radially outward. The clamp member 21 is formed in a mountain shape by 1st and 2nd tilt surfaces 21b and 21c and the peak part 21a at the border between those tilt surfaces is so shaped as to come into surface contact with the optical disk 1.
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