{HEAD ~ Reflections} from the indicia 12 illuminated by {TAIL ~ the line} 16 are focused by the imaging lens 18 onto a sensor 20, such as a linear charge coupled device  
illuminated by
{ HEAD ~ Reflections } from the indicia 12 illuminated by { TAIL ~ the line } 16 are focused by the imaging lens 18 onto a sensor 20 , such as a linear charge coupled device
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL 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