| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of negative pressure on a rotational center part of a disk by the rotation of the disk. SOLUTION: Relating to an upper cover 14 of the disk device 11, an air introducing hole 34 is opened at the center of a top plate part 14a which is formed so as to cover the upper surface of the disk 22 clamped by a clamp mechanism 23 of a turntable 22. This air introducing hole 34 is arranged at the position confronted with the upper part of the turntable 18 forming the rotational center of the disk. A fixed sheet 36 provided with holes is adhered around the air introducing hole 34. On the lower surface side of the fixed sheet 36 with holes there is the adhering surface and five vent holes 36a are arranged at the center part. Then, a filter 38 is adhered on the lower surface of the fixed sheet 36 with holes. This filter 38 consists of a fiber such as cotton to eliminate the dust in the air when the air is introduced from the outside.
|
