A lower ramp is disposed below the upper ramp and is movable into and out of {HEAD ~ the sheet feed plane} in alternating {TAIL ~ relation} to the upper ramp 
in alternating
A lower ramp is disposed below the upper ramp and is movable into and out of { HEAD ~ the sheet feed plane } in alternating { TAIL ~ relation } to the upper ramp
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH