Ricoh FT4215, Service Training Manual

Page: 168 / 208

8. SECOND SIDE COPY
2,350 milliseconds after the duplex turn sensor is actuated by the leading
edge of the final copy in the first side copy run, the duplex feed motor [A]
reverses direction and rotates clockwise (front view), rotating the duplex feed
roller [B] counterclockwise (front view). This moves the flip mylar [C] back to
the right (front view). At the same time the cam clutch [D] rotates clockwise
(front view), raising the duplex bottom plate [E].
The paper feed system, which consists of the duplex feed roller [B] and the
friction roller [F], feeds only the top sheet of the stack copies to the relay
rollers [G] in the copier. After that, the second side copies follow the second
feed station paper path.
After the final copy leaves the duplex bottom plate, the paper end feeler [H]
drops through a slot in the duplex bottom plate. The paper end actuator [I],
which is on the same shaft as the paper end feeler, pivots into the duplex
paper end sensor [J], sending a High signal to the main board to stop the
next paper feeding cycle.
[G]
[C]
[B]
[F]
[A]
[D] [E]
[H]
[I] [J]
STM 5-11 FT4220/4222