| 摘要 |
PURPOSE:To make possible the blowing off of the dust on a disk surface to the outside of the surface by bringing an air blow port of a member for fixing a magnetic disk to a spindle hub into proximity to the disk surface. CONSTITUTION:The magnetic disk 3 is fixed to the spindle hub by the member 2 and the air blow port 1 is opened to the member 2. The air blowing out of the port 1 flows therefore near the surface of the disk 3 and the dust on the surface of the disk 3 is blown off to the outside of the surface.
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