Sheet discharge device, {HEAD ~ method} for detecting {TAIL ~ sheet loading}, computer readable medium storing sheet loading detection program, and image forming apparatus including sheet discharge device 
for detecting
Sheet discharge device , { HEAD ~ method } for detecting { TAIL ~ sheet loading } , computer readable medium storing sheet loading detection program , and image forming apparatus including sheet discharge device
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH