Fixing System; Functional Configuration; Fixing Temperature Control - Canon MF735C Series Service Manual

Fixing System

Functional Configuration

Overview
The fixing system forms a permanent image by melting the toner on the paper using pressure and heat.
Description
The fixing control circuit controls the temperature of the Fixing Assembly.
The Fixing Assembly of this machine uses the on-demand fixing method.
TH803
H120
H240
TH801
TH802
TH803
FU1
Temperature control of the Fixing Assembly which consists of these parts is performed by the Fixing Heater control circuit and
Fixing Heater safety circuit according to the command of the DC Controller.

Fixing Temperature Control

Overview
This control circuit controls the temperature such that the Fixing Heater reaches the target temperature.
FU1
Fixing heater control signal
Fixing heater
control circuit
Fixing control circuit
Symbol
Pressure film
Fixing roller
TH801
Fixing heater
safety circuit
DC controller
Fixing Heater (120 V)
Fixing Heater (240 V)
Temperature Fuse
45
2. Technical Explanation (Device)
Fixing film
H120/H240
TH802
Fixing temperature signal
Parts name
Main Thermistor
Sub Thermistor 1
Sub Thermistor 2