Paper End Detection - Ricoh Aficio 220 Service Manual

PAPER FEED 20 September 1999
For A4-width paper or wider, a projection [H] on the side fence engages the
secondary pressure spring [J] through a lever [I]. Then, the secondary pressure
spring [J] applies paper feed pressure in addition to the main pressure spring [K], to
ensure that extra pressure is applied to wider paper.
When the paper tray is pulled out, the pins [A, C] disengage from the couplings [B,
D], and the bottom plate drops. To make it easier to push the tray in, the lift motor
rotates backwards 1.7 seconds to return the bottom plate pressure lever coupling
[D] to the original position. The amount of reverse can be adjusted with SP 1-912.

2.8.5 PAPER END DETECTION

[A]
[B]
[C]
A265D520.WMF
If there is some paper in the paper tray, the paper stack raises the paper end feeler
[A] and the paper end sensor [B] is deactivated.
When the paper tray runs out of paper, the paper end feeler drops into the cutout
[C] in the tray bottom plate and the paper end sensor is activated.
When the paper tray is drawn out with no paper in the tray, the shape of the paper
end feeler causes it to lift up.
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