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