A developing device in which, after a film onto which an image was exposed has been heat-development processed, an image reader reads image information from the film and the image information is recorded onto a floppy disk. Then the film from which the image information was read is transported to a cutting apparatus. At the cutting apparatus, the film is grippedly transported between a cutter roller and a rubber roller and the film is destroyed such that the image information thereon cannot be read. The cutting apparatus is built into the interior of the developing device. Thus, when the film is ejected to an eject tray provided outside the developing device, the image information is already in an indecipherable state. Hence, the confidentiality of the recorded image information is reliably assured.