Then, an original light image is exposed to the thus charged surface of the drum 1 through {HEAD ~ an exposure system} 4 thereby forming {TAIL ~ an electrostatic latent image} 
Then , an original light image is exposed to the thus charged surface of the drum 1 through { HEAD ~ an exposure system } 4 thereby forming { TAIL ~ an electrostatic latent image }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL