Lexmark MB2236 Service Manual page 303

Duplex print job
After the first side is printed, the paper stops at the output bin while still in the exit roller. The paper is fed back
into the duplex paper path to have the opposite page printed.
The paper travels along the duplex path until it reenters the second input roller. From there, the paper continues
its path until the print job is done.
1 Duplex rear roller
2 Duplex front roller
Theory of operation
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