PURPOSE: To prevent the breakage of a device and the external member of a housing equipment mounted in an image reproducing device by providing a means for fixing the external member.

CONSTITUTION: This device is provided with the fixing means 31 for fixing the external member 2 of the photographic paper housing equipment 1 in the case of mounting the equipment 1 in the image reproducing device 10. Namely, in the case of fixing the external member 2 and moving a housing member 4 in the device 10, the member 2 is prevented from moving. After moving the member 4 in the device, the fixing of the external member 2 is released and the member 2 is freely separated from the device 10. Thus, the action of moving the member 4 from the member 2 to the device is smoothly executed and the member 2 and the device 10 are prevented from being broken while the device 10 is used.