The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

Provided is a disc storage device including a casing capable of storing a stacked body including one or a plurality of disc recording media and a spacer interposed between the disc recording media and an inner surface of a bottom plate, a position regulating unit that regulates a storage position of the stacked body inside the casing, and a plurality of through holes formed in an area of the bottom plate of the casing where the spacer is provided, in which the spacer is adsorbed to tips of pins to be inserted through the through holes.

The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

Provided is a disc storage device including: a casing capable of storing a stacked body including one or a plurality of disc-like recording media and a spacer interposed between the disc-like recording media and an inner surface of a bottom plate; a position regulating unit that regulates a storage position of the stacked body inside the casing; and a plurality of through holes formed in an area of the bottom plate of the casing where the spacer is provided, in which the spacer is adsorbed to tips of pins to be inserted through the through holes.