Patent ID: 7480922

Claim:
A disk drive in which a disk cartridge is mounted, the disk cartridge including a case having an aperture, a disk placed inside the case, a rotating wheel with a first gear on an outer circumference to rotate the rotating wheel to open and close the aperture, and a latch that locks the rotating wheel when the aperture is closed, the disk drive comprising: a main body; a tray on which the disk cartridge is mounted, the tray being loaded into and unloaded from the main body; a guide formed on the tray; and an opener installed in the main body, and elastically contacting the guide, the opener comprising: a second gear to rotate the rotating wheel while being coupled to the first gear, and a first protrusion formed at a first end of the second gear, the first protrusion temporarily rotating the rotating wheel such that the first and second gears mesh, wherein the guide includes a first cam to move the opener such that the first protrusion does not come into contact with the latch while the tray is moving between an unloaded position and a loaded position.