Table Upper/Lower Limit Detection And Paper Height Control - Ricoh LDD280 Service Manual

PAPER FEED

Table Upper/Lower Limit Detection and Paper Height Control

[A]
[B]
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When the paper table moves up, the top of the paper stack contacts the pick-up
roller [B], lifting it up. Then, when the paper height sensor [A] is actuated, the paper
table stops.
During a printing run, sheets are fed from the stack, and the pick-up roller lowers.
When the paper height sensor is de-actuated, the paper table motor starts turning
and lifts the paper table until the sensor is actuated again. In this way, the top of
the paper stack remains at the same position during printing.
When the tray lowers, the lower limit position is detected by the paper table lower
limit sensor (not shown), which is located beside the paper table motor.
Paper Table Open Detection
[B]
[A]
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When the paper table is open, the lever [A] activates the paper table set sensor [B].
If the paper table remains closed and the sensor is not activated, guidance will be
displayed on the operation panel.
C262/C265 6-96 SM