| 摘要 |
PURPOSE:To suppress the surface shaking of a disk, by providing an air flow generating blade, an air flow suction entry, and an air flow exhaustion exit on a stabilizer that is the pressing means of the disk, and providing a covered plate keeping position relation to secure a micro interval on the disk. CONSTITUTION:The disk 1 is placed on a turntable 4, and also the disk 1 is pressed and held on the turntable 4 by the pressing means 9, and the air flow generating blade 17, the air flow suction entry 18, and the air flow exhaustion exist 19 are provided in the pressing means 9. And the covered plate 20 is provided on a part of a holder 12 which holds the pressing means 9 rotatably freely keeping the position relation where the micro interval 21 exists between the upper plane of the disk 9. In other words, an air flow is generated by the air flow generating means 17 provided in the pressing means 9, and the air flow is poured into the micro interval 21 formed between the disk 1 and the covered plate 20 provided at a part of the holder covering the disk. In such a way, wind pressure is generated in the micro interval 21, and the shaking of the surface of the disk at the time of rotating the disk can be suppressed by the wind pressure.
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