| 摘要 |
In order to automatically position a magnetic disk relative to a disk drive, the drive includes a pivotable backer that provides positive seating of a central hub (on the disk) upon a drive spindle of a disk drive motor. A shuttle removes a cartridge containing the disk from a magazine and inserts the cartridge into a door offset from the spindle and commonly pivotable with the backer. The backer and door are differentially cammed so that the backer overtravels the door in a substantially continuous motion linked to the insertion movement. A hub seater depending from the backer penetrates an opening in the door to force the hub against the spindle as the door moves the disk into position relative to the drive. The backer then retreats to an offset position in which the hub seater breaks contact with the disk hub before the drive motor is started, thereby inserting the disk securely and seating the hub in one continuous motion without prolonging frictional contact as the disk begins to rotate.
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