Ricoh R-C4 Service Manual page 395

21 July 2006
When the tray contains paper of a small width, the paper feed pressure may
become too low when the thickness of the remaining stack of paper has decreased.
The lift motor rotates forward 400 ms after the sensor detects a certain amount of
paper remaining in the tray to increase paper feed pressure, simulating the
pressure generated by a full tray.
NOTE: The relationship between the bottom plate re-adjustment timing, paper size
threshold, and the related SP modes is explained in "Bottom Plate
Pressure Adjustment for Paper Size".
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PAPER FEED