Ricoh FT6645 Manual page 102

23 April 1993 PAPER FEED
6.9 PAPER NEAR END / PAPER END DETECTION
[B]
[A]
[C]
[D]
[E]
A feeler [A] on the lift arm shaft rotates counterclockwise in accordance with
the change of the top paper level. When almost 50 sheets are left on the tray,
the feeler activate the paper near end sensor [B] and informs the copier CPU
of the paper near end condition.
If paper is loaded in the paper tray, the paper end feeler [C] is raised by the
paper stack and the paper end sensor [D] is deactivated. When the paper
tray runs out of paper, the paper end feeler drops in the cut out [E] of the tray
bottom plate and the paper end sensor is activated.
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