Fixing Film Unit Engagement/Disengagement Control - Canon imageRUNNER ADVANCE C255 Series Service Manual

Execution condition/timing
When switching to paper that is wider than the preceding sheet while printing and the detected temperature of the Main Thermistor
(front/rear edge of the Fixing Heater) and Sub Thermistor (front/rear edge of the Fixing Film) at that time exceeds the designated
temperature
Control description
This is a control to stop pickup of the succeeding sheet and power distribution to the Fixing Heater to reduce fixing temperature.
This down sequence is terminated at the point when any of the following conditions is satisfied.
• When the detected temperature of the Main Thermistor (front/rear edge of the Fixing Heater) and Sub Thermistor (front/rear
edge of the Fixing Film) is at or below the designated temperature
• When specified time has elapsed after the preceding sheet passed the fixing nip

Fixing Film Unit Engagement/Disengagement Control

The Fixing Film Unit is disengaged from the Pressure Roller under a specific condition in order to prevent deformation of the
Fixing Film/Pressure Roller due to heat and pressure that arise when the drive of the Pressure Roller stops, and to improve jam
removability.
Fixing Film
Non-feed area
B5R
Non-feed area
86
2. Technology
A4R