Xerox Phaser 6115MFP Service Manual page 52

Theory of Operation
2-8
Fusing Motor speed is regulated using the Fusing Loop Sensor output
following this process:
1. The initial fusing speed is set to the low speed. This causes the Transfer
Roller of the paper transport system to feed paper at a faster rate than the
speed of the fuser. This action causes a loop, or a bending effect of the
paper (see illustration below).
2. When the length of the loop formed in the paper becomes greater, the
Fusing Loop Sensor is activated (blocked).
3. While the Fusing Paper Loop Sensor remains activated, the fusing speed
increases to the high level.
4. When the Fusing Paper Loop Sensor is deactivated, the fusing speed
immediately switches to the low level.
5. The sequence of these operations is repeated so that the fusing speed is
changed automatically according to the loop length. This effectively
compensates for the difference between the fusing speed and paper
transport speed during image transfer.
s6115-072
Phaser 6115MFP Multifunction Product Service Manual
s6115-073