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