Reflections from {HEAD ~ 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  
Reflections from { HEAD ~ 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
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH 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