The documents are placed at a predetermined position on the upper surface of {HEAD ~ the platen glass} 8 by {TAIL ~ the action} of the conveying belt mechanism 36 
by
The documents are placed at a predetermined position on the upper surface of { HEAD ~ the platen glass } 8 by { TAIL ~ the action } of the conveying belt mechanism 36
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH