After the front edge of the document sheet touches the stopper 101, the motor 21 is run for {HEAD ~ an extra period} of {TAIL ~ time} sufficient for moving the conveyer belt 10 by about 10 mm 
After the front edge of the document sheet touches the stopper 101 , the motor 21 is run for { HEAD ~ an extra period } of { TAIL ~ time } sufficient for moving the conveyer belt 10 by about 10 mm
OTH 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 REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH