The coefficient of {HEAD ~ reflectance} of the output reflective layer is determined by a mathematical relationship which takes into consideration the position of the reflective layer from the light entering region and the amount of light which must pass through the reflective layer to provide uniform illumination of {TAIL ~ the document} 
The coefficient of { HEAD ~ reflectance } of the output reflective layer is determined by a mathematical relationship which takes into consideration the position of the reflective layer from the light entering region and the amount of light which must pass through the reflective layer to provide uniform illumination of { TAIL ~ the document }
OTH OTH OTH 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 OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL