Sensors control the operation of the jogger assembly responsive to the presence of {HEAD ~ a stack} to be jogged and responsive to the movement of the jogging assembly to a given position displaced from {TAIL ~ the nominal operating position} 
Sensors control the operation of the jogger assembly responsive to the presence of { HEAD ~ a stack } to be jogged and responsive to the movement of the jogging assembly to a given position displaced from { TAIL ~ the nominal operating position }
OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL