To eliminate {TAIL ~ the above inconvenience} in accordance with this embodiment, at an instant the paper rear end detecting sensor 12 detects {HEAD ~ the rear end} of an imposed paper sheet 17, the paper discharge/transport speed of the transport means 6 is increased to thereby permit even a small size imposed paper sheet to be discharged steadily onto the paper discharge stand 9 
To eliminate { TAIL ~ the above inconvenience } in accordance with this embodiment , at an instant the paper rear end detecting sensor 12 detects { HEAD ~ the rear end } of an imposed paper sheet 17 , the paper discharge / transport speed of the transport means 6 is increased to thereby permit even a small size imposed paper sheet to be discharged steadily onto the paper discharge stand 9
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH