Film Unit Engagement/Disengagement Control - Canon imageRUNNER ADVANCE C3500 III Series Service Manual

Startup conditions
When the difference between the higher temperature detected by either the Sub Thermistor 1 (TH01_03) or the Sub Thermistor
2 (TH01_01) and the temperature of the Main Thermistor (TH01_02) is the specified temperature or higher at the time a sheet
with a width wider than the preceding one is fed during printing.
Operation
The paper interval is increased to decrease temperature, and feeding the succeeding sheet and power supply to the Heater are
stopped.
Termination condition
This down sequence is terminated at the point when any of the following conditions is satisfied.
• The difference between the higher temperature detected by either Sub Thermistor 1 (TH01_03) or Sub Thermistor 2 (TH01_
01) and the temperature of the Main Thermistor 1 (TH01_02) has become the specified temperature or less.
• A maximum of 30 seconds has elapsed since the preceding sheet passed the fixing nip.

Film Unit Engagement/Disengagement Control

Control description
The Fixing Film Unit is disengaged from the Fixing Pressure Roller under a specific condition in order to prevent deformation of
the Fixing Film/Fixing Pressure Roller due to heat and pressure that arise when the drive of the Fixing Pressure Roller stops, and
to improve jam removability.
PS13
No.
[1] Pressure Release Gear
[2] Cam Gear
[3] Fixing Film
Engaged state
[1]
Sensor flag is ON
[2]
[3] [4]
Non-feeding area
A4R
A4
Non-feeding area
Disengaged state
[1]
PS13
Sensor flag is OFF
[2]
[3]
Name
97
2. Technology
[4]