Disk clamping device for magnetic disk drive

Details Disk clamping device for magnetic disk drive Disk clamping device for magnetic disk drive

G - Physics

11

B

G11B 17/02 (2006.01) G11B 5/012 (2006.01) G11B 17/038 (2006.01) G11B 23/03 (2006.01)

Patent

CA 2103186

A disk clamping device in a magnetic disk drive includes a clamper which presses an uppermost one of a plurality of magnetic recording disks and a clamping force transmission member which presses the clamper against the uppermost magnetic recording disk. A material having a small Young's modulus, such as a high polymer material and a super elastic material, is used for the clamper or the clamping force transmission member, or both of them. The device may include a shim whose Young's modulus is larger than that of the clamper which presses the uppermost disk through the shim. The arrangement makes it possible to reduce the variations in the clamping force caused by a lack of manufacturing precision or a change in temperatures and to provide a stable clamping force. The uniform clamping force enables to reduce the occurrence of undulation in the disks otherwise caused by the circumferential clamping force differences in the clamper.

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