Abstract: An object of the present invention is to provide a novel hinge device and an electronic instrument using the hinge device which is extremely high in commercial value.

Abstract: An object of the present invention is to provide a novel hinge device and an electronic instrument using the hinge device which is extremely high in commercial value.

Abstract: A disk player for use of playback of both of the single body of a digital optical disk and another digital optical disk encased in a cartridge by a single player. The disk player comprises a disk tray which is mounted on a main chassis and adapted to make its reciprocating movement in the fore-and-aft direction of the player to carry the single body of the disk to a predetermined position in the player. A cartridge carrier is mounted on a sub-chassis connected to and located above the main chassis and makes its reciprocating movement in the fore-and-aft direction to carry the cartridge encasing therein the disk to another predetermined position in the player. A mechanical chassis is tiltably connected to and located below the main chassis and movable upwardly and downwardly. A turntable is rotatably mounted on the mechanical chassis and driven by a motor supported to the mechanical chassis. Either one of the disks carried at the predetermined position is mounted on the turntable to be played back.

Abstract: A disc player is shown which can play both a naked disc and a disc encased in a cartridge. A disc tray is movable on a single horizontal way to take at least first, second and third positions which are respectively the position for receiving or ejecting the naked disc, the position for practically playing the naked disc and the position which is distant from the second and third positions. When playing of the cartridge is intended, the disc tray is moved to the third position to permit the cartridge to take a loaded position at which the cartridge is practically played.