Abstract: A disc may be inserted or ejected from a turntable of an optical disc drive without applying excessive force to the disc, and the disc is securely locked onto the turntable when the disc is being rotated. The optical disc drive includes a turntable having a protruding boss for insertion into a mounting hole formed on a disc. First locks are disposed at the outer circumference of the boss, such that the first locks can move in the radial direction of the boss to lock the disc located on the turntable. Elastic members provide an elastic force to the first locks. A magnetic member is disposed above the boss, and a second lock disposed in the boss increases a locking force of the first locks only when the second lock interacts with the magnetic member.

Abstract: An optical recording and/or playback apparatus in which a disc is prevented from being ejected from the optical recording and playback apparatus during operation of the optical recording and playback apparatus. The optical recording and playback apparatus includes a main body having an entrance, a deck mounted in the main body and having a spindle motor and an optical pickup unit, a tray mounted at the main body such that the tray is inserted into or ejected from the main body through the entrance, a loading unit to insert or eject the tray into or from the main body, and a safety door mounted at the entrance to close the entrance after the tray is inserted into the main body, the safety door being opened and closed according to the operation of the loading unit.