A scanner 18 wherein the scanner has {HEAD ~ a roller transport} for positioning {TAIL ~ articles} to be scanned 
for positioning
A scanner 18 wherein the scanner has { HEAD ~ a roller transport } for positioning { TAIL ~ articles } to be scanned
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH