User Guide

Loop control
The product controls the loop of paper to prevent print-quality and paper-feed defects.
●
If the fuser film/pressure roller rotates slower than the photosensitive drum/transfer roller, the
paper loop increases.
●
If the fuser film/pressure roller rotates faster than the photosensitive drum/transfer roller, the paper
loop decreases.
The DC controller detects the loop amount by monitoring the loop sensor and controls the rotational
speed of the fuser motor.
Figure 1-35 Loop control
M1M3
DC controller
SR6
Loop sensor
Pressure roller
Loop sensor lever
Fuser film/Pressure roller rotates slower than photosensitive drum/transfer roller.
Paper
Photosensitive
drum
Fuser motor
Drum motor
Fuser film
Transfer roller
Fuser film/Pressure roller rotates faster than photosensitive drum/transfer roller.
48 Chapter 1 Theory of operation ENWW