An image processing system includes a computer and an image processing apparatus. The darker granules in the more posterior plane are visible from the front of the shingle to provide visually sharp, precise delineation between zones of lighter and darker shading. A network control unit comprises a network information transferring unit which transmits network information, a network database which stores network information and a request accepting unit which transmits permission ID. The ratio of dominant plasma to the secondary plasma can be adjusted such that ion densities are uniform across the wafer, resulting in uniform etch rate over the wafer. Image transfer from the recording surface of the medium to the transporting roller and image retransfer from the transporting roller to the recording surface of the following medium are inhibited and which has excellent recording quality.