Ricoh B064 Service Manual page 591

PAPER END DETECTION
2.5 PAPER END DETECTION
[A]
[B]
B473D111.WMF
The paper end sensor [A] monitors the light reflected by each sheet on top of the
stack.
When the last sheet feeds, the cutout [B] is exposed, and the paper end sensor
receives no reflected light from below because there is no paper and this signals
paper end.
SM 15 B473