User Guide

Duplexer
The optional duplexer is installed in the left side of the product. The duplexer reverses the output roller
and intermediate output roller in the product engine, reverses and feeds the paper passed through the
fuser. Then it detects side misregistration to adjust the starting position of the scanning direction for the
second side of paper according to the command from the formatter and feeds it to the product engine.
Figure 1-58 Duplexer paper path
Simplex paper path
Duplex unit
Intermediate output roller
Output roller
Side misregistration sensor
Re-pickup roller
Duplex reverse roller
Duplex re-pickup roller
Duplex paper path
Figure 1-59 Duplexer signal flow
Duplex controller
Duplex unit
Motor
Clutch
Photointerrupter
Side misregistration sensor
DC controller
+24V
Photoreceiver
sensor
NVRAM
Fan
LED
76 Chapter 1 Theory of operation ENWW