Pre-Fixing Arch Level Control - Canon imageRUNNER ADVANCE C350 series Service Manual

2
Technical Explanation > Fixing System > Controls > Pre-fixing arch level control
<Pressure state>
Fixing
Slit
Pressure Release
Sensor (PS13)
Pressure Release
Gear
Pressure Release
Gear
Pressure Release
Cam
Pressure Roller
Pressure
Plate
Fixing Film
Execution conditions/timing of pressure application operation:
• In case of disengaged state during printing
Execution conditions/timing of disengagement operation:
• When the Front/Right door is opened
• At power-off
• When a jam occurs
• When an error occurs
• When the specified time elapses after printing ends
2 Technical Explanation > Fixing System > Controls > Pre-fixing arch level control
<Pressure Release state>
F-2-123

■ Pre-fixing arch level control

Purpose:
To prevent image failure and feeding failure
Since the feeding speed of the Pressure Roller and that of the Secondary Transfer Outer
Roller are not the same when a sheet is fed to the Fixing Assembly, image failure, paper
wrinkle, image stretching, etc. occur. To prevent these symptoms, Arch Sensors located
at downstream of the Secondary Transfer Unit detect the slack of paper, and the rotation
speed of the Fixing Motor is adjusted. This keeps an appropriate level of paper slack.
Starting conditions:
This control is performed every time the paper is fed.
Fixing Film
Pressure Roller
ITB
Secondary Transfer Outer Roller
2-96
Sensor Flag
Loop Sensor
(PS11)
F-2-124
2-96