Two pairs of feed rollers are provided, one at each side edge of the sheet, {HEAD ~ each pair} defining {TAIL ~ a nip} associated respectively with one of the opposite side edge portions of the sheet 
defining
Two pairs of feed rollers are provided , one at each side edge of the sheet , { HEAD ~ each pair } defining { TAIL ~ a nip } associated respectively with one of the opposite side edge portions of the sheet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH