{TAIL ~ Each individual scanning entity} includes a scanning system having {HEAD ~ a decoder} for decoding scanned bar code information and a printhead defect identifier for identifying printhead defects from scanned bar code information that cannot be decoded and for constructing printhead defect models for use in correcting future bar code scans 
{ TAIL ~ Each individual scanning entity } includes a scanning system having { HEAD ~ a decoder } for decoding scanned bar code information and a printhead defect identifier for identifying printhead defects from scanned bar code information that can not be decoded and for constructing printhead defect models for use in correcting future bar code scans
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH