Patent ID: 7340753

Claim:
A disk drive adapted for use with a disk cartridge, the disk cartridge comprising: a disk; a body to store the disk therein; a window, which is provided for the body to allow a head to access the disk to read and/or write data from/on the disk; a shutter for opening or shutting the window; and a rotational member, which includes a gear portion and first and second notched portions to sandwich the gear portion and which interlocks with the shutter, wherein the disk drive comprises: a motor for spinning the disk; a transporting portion for holding and transporting the disk cartridge between a position where the motor is ready to spin the disk and a position where the disk cartridge is loaded into, or unloaded from, the disk drive; the head for reading and/or writing the data; and a shutter driving mechanism, which includes a rack portion that engages with the gear portion, and first and second driving levers that are supported to fit into, and turn with, the first and second notched portions, respectively, wherein the transporting portion includes a first cam structure for driving the first and second driving levers of the shutter driving mechanism such that the first and second driving levers swing as the transporting portion moves, and wherein as the transporting portion moves, the first and second notched portions and the gear portion of the disk cartridge held on the transporting portion get engaged with the shutter driving mechanism, which then rotates the rotational member so as to open or close the shutter.