Disc device having a chassis and movable tray part including a turntable and pickup means with a disc overhanging the tray perpendicular to the disc insertion direction

A disc device into which a CD may be removably inserted having a chassis adapted to be integrated into the frame of a computer and a movable tray comprising:

• a turntable supported on said tray for guiding an operator's placement of a disc on said turntable,
• a pickup unit including an optical head for detecting information recorded in said disk;
• a base for supporting said turntable and said pickup unit;
• wherein said tray is movable between a disc loading position inside said chassis and a disc replacement position which exposes said turntable outside said chassis;
• and
• said tray having a structure such that a part of said disc, which is placed on said turntable, extends outwardly beyond the outer periphery of said tray to permit said part of said disc to overhang from said tray with said disc device further comprising:
• said chassis having a sub-frame for supporting said base with the sub-frame arranged so as to be able to project from said device and retreat to said device and with said tray being mounted on said sub-frame;
• and rail means located on opposite sides of said sub-frame for moving said sub-frame between said disc loading position and said disc replacement position wherein the part of the disc which overhangs from said tray also overhangs from said rail means when in the disc replacement position thereby permitting said disc device to be miniaturized in size.