Each individual scanning entity has {TAIL ~ an error corrector} for correcting erroneous scanned bar code information using {HEAD ~ the locally stored printhead defect models} 
Each individual scanning entity has { TAIL ~ an error corrector } for correcting erroneous scanned bar code information using { HEAD ~ the locally stored printhead defect models }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD