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