Ricoh G-P3 Service Manual page 366

Paper Feed
Interleaving
6
Step 1:
This duplex unit uses the interleaving mechanism. This decreases the total time of duplex printing.
The machine prints on side [1]. Then, the first sheet of paper is fed out of the exit, but not fully.
Then the exit roller changes direction and the paper goes to the duplex feed path. At the same time, the
second sheet of paper is fed between the transfer belt and the transfer roller, and side [3] is printed.
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