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