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