{HEAD ~ An upper ramp} is disposed upstream from the accumulation section and is movable into and out of {TAIL ~ the sheet feed plane} 
{ HEAD ~ An upper ramp } is disposed upstream from the accumulation section and is movable into and out of { TAIL ~ the sheet feed plane }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL