Roller Function - Ricoh FT5540 Service Manual

31 August 1989

10.3 ROLLER FUNCTION

This copier uses an FRR (Feed + Reverse Roller) paper feed system with three rollers.
Pick-up Roller
The pick-up roller [A] rests on the paper stack until the start key is pressed.. A few moments
after the Start key is pressed, the pick-up roller starts to rotate and feeds the top sheet
between the feed roller [B] and the separation roller [C]. When the paper's leading edge
reaches the feed roller, the pick-up roller lifts off the paper stack so that it does not interfere
with the operation of the feed and separation rollers.
Feed and Separation Rollers
There is a one-way bearing inside the feed roller so it can turn only in one direction. The
separation roller is driven in the opposite direction. The separation roller, however, is driven
through a slip clutch (torque limiter clutch) which allows it to turn in either direction depending
on the friction between the rollers. A spring keeps the separation roller in contact with the feed
roller.
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