| 摘要 |
PROBLEM TO BE SOLVED: To provide a clamping structure of a disk type storage medium to attain a low price information storage device which assures excellent rigidity. SOLUTION: In the clamping structure of a disk type storage medium comprising a spindle having the mount surface of a disk type storage medium, one or a plurality of disk type storage media to be mounted to the spindle and a fixing means for pressing the disk type storage medium to the mount surface, a rotation stopper means for spindle is provided between the disk type storage medium and the other members to be in contact with the medium. For example, a column type small projection 11 is provided on the substrate surface of a first hard disk 2 and a small hole 12 which is engaged with such a small projection 11 is also provided in a part of a first spacer 4 corresponding to such a small projection.
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