Patent ID: 7339858

Claim:
A disk device comprising: a disk tray capable of accommodating disks that are stacked in the axial direction; a first transferring component for transferring the disk tray in the disk-stacking direction; a driving unit comprising a head for optically reading out data recorded in the disks, and a supporting component for supporting the rotation of the disks; a second transferring component for selectively transferring the driving unit between a playback position where the driving unit overlaps with the disks in the disk-stacking direction and a retracted position where the driving unit does not overlap with the disks in the disk-stacking direction; a disk-detecting component for determining whether the disk tray accommodates disks at predetermined positions; and a controlling section for transferring the disk tray in the disk-stacking direction with the first transferring component while the driving unit is kept at the playback position on the basis of detection results of the disk-detecting component.