Ricoh A156 Service Manual page 145

Rev. 7/95
12. DUPLEX
[H]
12.1 OVERVIEW
[H]
[A]
[A]
– A156 copier –
– A160 copier –
– A160 copier –
[G]
[B]
[C]
– A156 copier –
[F]
[E]
[D]
The duplex tray is used for multiple two-sided and single two-sided copying.
Note the paper feed path differences between the A156 and the A160.
Timing of the duplex function is started when the paper actuates the fusing
exit sensor [H].
The junction gate [A] rotates up 1.1 seconds after the registration clutch has
turned on, and the copy passes to the duplex tray. Shortly after the fusing
exit sensor [H] detects the leading edge of the paper, the entrance rollers [B]
and duplex feed roller [C] start to rotate. At the same time, the duplex bottom
plate [D] lowers.
The copy feeds over the duplex feed roller and into the tray. The jogger
fences [E] and end fence [F] move inward to square the copy stack, then
they move back 10.5 mm from the paper stack. After the final copy is
delivered to the stack area, the jogger and end fences remain against the
paper stack.
After the final copy is squared the second side copy is initiated. The duplex
bottom plate lifts the paper to the feed position and the duplex feed roller
starts rotating counterclockwise to feed the top copy to the relay rollers [G].
The second side is then copied with the copy following the upper paper tray
feed station paper path.
STM 2-97 A156/A160/A162