DISK DEVICE

PROBLEM TO BE SOLVED: To simplify the constitution of a main body of the device by unnecessitating a spring used for turning a shutter opening/closing roller back to the initial position at the time of the withdrawing operation of a tray. SOLUTION: This device is constituted in such a manner that a disk cartridge 150 utilizing a shutter opening/closing system is pulled into the device main body in the state mounted on the tray 102. In this case, a shutter opening/closing guide hole 117 for guiding the movement of the shutter opening/closing roller 118 opening the shutter 154 of the cartridge 150 at the time of the forwarding operation of the tray 102 is provided on a top plate 116 of the device main body 101. A shutter opening/closing guide rib 113 is provided on the tray 102 so as to be confroned with the front surface part of the cartridge 150, thereby the roller 118 is made to slide between the guide rib 113 and the cartridge 150 at the time of the forward/backward movement of the tray 102. At the time of the withdrawing operation of the tray 102, the roller 118 is pressurized by the guide rib 113 and moved along the guide hole 117 then turned back to the initial position Ps from the end position Pe.