{HEAD ~ A log} is provided at {TAIL ~ each individual scanning entity} for storing locally constructed printhead defect models and printhead defect models that have been constructed at other scanning entities in the network 
is provided at
{ HEAD ~ A log } is provided at { TAIL ~ each individual scanning entity } for storing locally constructed printhead defect models and printhead defect models that have been constructed at other scanning entities in the network
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH