A disk device realizing reducing in size and number of parts, prevention of
damage to disks, shortening operation time for plurality operations,
improved vibration resistance and less expensive manufacturing cost is
provided. The disk device capable of storing a plurality of disks loosely
fitted and supported at its inner diameter, including separable loose
mandrel mechanisms, when the mandrel mechanism is loosely fitted to the
disk, the disk holder holds the disk, and one end of the a second mandrel
mechanism is connected to another end of a first mandrel mechanism in a
state that the disk is raised to a height abutting upon a support of a
ceiling side formed on the first mandrel mechanism.
