Misfeed Prevention - Ricoh FT4430 Service Manual

MISFEED PREVENTION

The front side of the friction roller [A] is attached to the misfeed prevention
lever [B] through a one-way clutch.
When the leading edge of an original first contacts the feed [C] and friction
rollers [A], the friction roller is stationary. As the leading edge is fed between
these rollers, the friction roller rotates counter clockwise a few degrees to help
feed thick originals [D]. After the friction roller has rotated a few degrees, the
misfeed prevention lever contacts the stopper plate [E] and the friction roller
stops rotating. At this point, the separation mechanism will eliminate multiple
feeding.
When the trailing edge of the original passes the friction roller, the spring [F]
returns the lever to its original position without rotating the friction roller shaft.
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16 April '88