Patent ID: 8640151

Claim:
An optical disk apparatus for performing at least one of recording and reproduction of information on an information recording surface of an optical disk mounted on the apparatus, the optical disk apparatus comprising: a tray configured to mount the optical disk thereon, wherein the tray includes a guide rail configured to guide movement of the tray in a tray insertion direction and a tray election direction, the guide rail disposed on sides of the tray parallel with the tray insertion direction and the tray election direction; and a casing configured to store the tray, so that the tray can be inserted and ejected, wherein the casing includes: rail guides formed on sides facing to the guide rail of the tray when the tray is inserted, and configured to guide the guide rail, and a spring member formed on a front end of at least one of the rail guides, in the tray insertion direction, wherein the spring member is configured to provide elastic deformation, in the tray insertion direction, when a force in the tray insertion direction is applied to the spring member.