Duplexer Reverse-And-Feed Operation; Table 1-22 Duplexer Reverse-And-Feed Components; Figure 1-64 Duplexer Reverse-And-Feed Operation - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Duplexer reverse-and-feed operation

The duplexer reverses the feed and delivery rollers in the product to print on both sides. The paper that
passed through the fuser unit reverses its feeding direction and is fed to the duplexer. The duplexer
feeds the paper and performs horizontal registration to align the starting position of the main scan for
the second-side print. Then, the paper is fed into the product engine unit again.
Figure 1-64
Intermediate
output roller
Fuser output sensor
Table 1-22
Component
M1
CL1
SR1
SR2
88 Chapter 1 Theory of operation
Duplexer reverse-and-feed operation
Output roller
M1
Duplexer reverse-and-feed components
Duplex feed motor
Duplex feed clutch
Duplex reverse sensor
Duplex re-pickup sensor
Reverse position
Re-pickup waiting position
SR1
SR2
CL1
Side misregistration sensor
Signal
DUPLEX FEED MOTOR CONTROL signal
DUPLEX FEED CLUTCH signal
DUPLEX FEED signal
DUPLEX RE-PICKUP signal
ENWW