The document 10 is moved in direction 14 so that {HEAD ~ all portions} of {TAIL ~ the document} are eventually illuminated by the line of light, or scan line 16, which is produced by the illuminating devices of the scanner 
of
The document 10 is moved in direction 14 so that { HEAD ~ all portions } of { TAIL ~ the document } are eventually illuminated by the line of light , or scan line 16 , which is produced by the illuminating devices of the scanner
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH