Frr Feed System - Ricoh FT6645 Service Training Manual

6.2

FRR FEED SYSTEM

[B]
[A]
[C]
This copier uses an FRR paper feed system using three rollers.
6.2.1 Pick-up Roller
The pick-up roller [A] is not in contact with the paper stack before it starts
feeding paper. Shortly after the Start key is pressed, the pick-up roller drops
down and feeds the top sheet between the feed [B] and the separation rollers
[C]. At almost the same time that the paper's leading edge arrives at 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. The feed and separation
rollers then take over the paper feed process.
6.2.2 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 to the feed
roller. 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. The separation roller solenoid keeps the
separation roller in contact with the feed roller.
FT6645/6655/6665 2-68 STM