The load of either the paper feeding unit or the paper discharging unit is supported by {HEAD ~ said contact pieces} at the closed position of {TAIL ~ the ADF} 
The load of either the paper feeding unit or the paper discharging unit is supported by { HEAD ~ said contact pieces } at the closed position of { TAIL ~ the ADF }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL