Paper Lift; Lift Mechanism; Paper End/Near-End Detection - Ricoh TH-C1b Service Manual

10 February 2005

6.10.3 PAPER LIFT

Lift Mechanism

The spring under the bottom plate [A] presses the plate upward. When you press
the bottom plate as far down as possible, the hook on lever [C] holds the plate. The
lever releases the bottom plate when it is pressed by the protruding part on the
right tray rail; this happens when the tray [B] is completely pushed into the machine.
[A]: Bottom plate
[B]: Tray
[C]: Lever

Paper End/Near-End Detection

[A]: Paper near-end sensor
[B]: Paper near-end sensor feeler
[C]: Paper end sensor
[D]: Paper end sensor feeler
The bottom plate gradually rises as paper is fed. The bottom plate position is
checked with the near-end sensor feeler [B]. The sensor [A] is actuated when
about 50 sheets are left in the tray, and the paper near-end message appears on
the operation panel.
When paper runs out, the paper end sensor feeler [D] drops into the cutout in the
bottom plate. This actuates the sensor [C], and the paper end message appears on
the operation panel.
[C]
[A]
6-59
PAPER FEED
[A]
[B]
B156D044.WMF
[B]
[C]
[D]
B156D045.WMF