| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To maintain the high information reading/writing accuracy even if a disk hub is deformed by a clamping force. <P>SOLUTION: A deformation on a disk mounting face 10d due to the clamping force is previously considered. At least a portion of the disk mounting face 10d provided in the disk hub 10 has a shape in which it is located near a disk D from an inside diameter end 10d1 of the disk mounting face 10d. If the clamping force is applied to the disk mounting face 10d, a portion located near the disk D from the inside diameter end 10d1 of the disk mounting face 10d is pushed into a side opposite to the disk D in the axial direction, and a flatness of the disk D is corrected and approaches zero. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
