Patent ID: 7698717

Claim:
A system for recording/reproducing a photosensitive recording medium, comprising: a photosensitive recording medium cartridge including a cartridge body, a shutter, and a lock mechanism, the cartridge body receiving a photosensitive recording medium therein so that the photosensitive recording medium can rotate, the cartridge body having an opening for exposing a center and a recording surface of the photosensitive recording medium to the outside, the shutter being attached to the outside of the cartridge body so as to be disposed movably between a close position for closing the opening and an open position for opening the opening, the lock mechanism being provided for locking the shutter in the close position; and a recording/reproducing device including a housing, an insertion port shutter, an unlock mechanism, and a shutter opening mechanism, the housing being provided with an insertion port through which the photosensitive recording medium cartridge can be inserted into the housing, the housing having an internal space shielded from external light, the insertion port shutter being provided to open/close the insertion port desirably so that the insertion port shutter shields the insertion port from external light when the insertion port is closed, the unlock mechanism being provided for releasing the lock based on the lock mechanism when the photosensitive recording medium cartridge is inserted, the shutter opening mechanism being provided for opening the shutter of the photosensitive recording medium cartridge when the photosensitive recording medium cartridge is inserted into a predetermined position and the inside of the housing is shielded from light; wherein the recording/reproducing device further includes an illuminance sensor for detecting illuminance in the inside of the housing, and wherein a light-shielded state of the inside of the housing is decided when illuminance not higher than a predetermined value is detected by the illuminance sensor for controlling the shutter.