Disk cartridge, disk device and shutter opening/closing mechanism

摘要

A disk device 1 comprising a disk cartridge 3 and a disk 2 accommodated therein. The disk cartridge 3 includes a body case 11: opened with a window for exposing a recording surface 5 of the disk 2; and provided with a shutter 26 to be moved in a manner capable of opening/closing the window. The body case 11 is provided with: a rotating body 30 in a gear shape having an outer peripheral surface exposed to the exterior of the body case; and transmission 35 for transmitting the rotation of the rotating body 30 to the shutter 26. Provided in a disk driving apparatus for recording a piece of information into or reproducing the information from the disk 2 are: a guiding rib; and an operation rack along the disk inserting direction. Provided on an outer surface of the body case 11 is an operational-position determining groove 17 in a recessed groove shape along the inserting direction of the disk device 1 and near the rotating body 30, and the rotating body 30 is engaged with the operation rack while engaging the groove 17 with the guiding rib so as to conduct the positioning, to thereby open/close the shutter 26.