Canon imagePRESS C1 Service Manual - page 538
Chapter 9
9-1
9.1 Construction
9.1.1 Specifications/Control/Function
0012-0960
imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+
T-9-1
Item
Description
Fixing Method
by lower fixing belt
Heater
inside fixing roller
2pc (main heater/sub heater; integrated type)
Inside inlet roller
1pc.
Inside outside heating roller
1pc.
Control temperature
fixing roller
165 deg C (standby)
Fixing belt (inlet roller)
95 deg C (standby)
Outside heating roller
200 deg C (standby)
Fixing temperature detection Fixing roller
Main thermistor THM1 (roller center; non-contact)
Sub thermistor THM2 (roller rear end; contact)
Inlet roller
Main thermistor THM3 (roller center; contact)
Sub thermistor THM4 (roller rear end; contact)
Outside heating roller
Main thermistor THM5 (roller center; contact)
Sub thermistor THM6 (roller rear end; contact)
Fixing temperature
control
during warm-up, standby, printing, last rotation, power save mode
Fixing speed control
down sequence (black-and-white, constant velocity only)
Protective mechanism
A check is run for the following to cut power to the heater in the event of a fault.
check on the temperature using the main/sub thermistor
cutting the supply power using the thermal switch
Fixing roller
TP1 (roller front end; contact; operating temperature of 180 +/-7 deg C)
Fixing belt
TP2 (roller center; non-contact; operating temperature of 130 +/-5 deg C)
Outside heating roller
TP3 (roller front end; contact; operating temperature of 220 +/-8 deg C)
check for a thermistor open circuit/paper wrap
Separation mechanism
-Separation Roller
Separates paper from the fixing roller. Separates paper by pressing the separation roller of which first diameter is 20 mm dia into the
fixing roller to generate a local curvature change.
-Lower Separation Claw
Prevents wrapping of paper around the fixing belt (as when paper is curling downward)
Cleaning mechanism
fixing roller
by using the collecting roller and taking up the cleaning web
Fixing belt
none
outside heating roller
by the cleaning roller
Control mechanisms
-cleaning web drive control
- cleaning web length detection
- belt/web/outside heating roller attachment/detachment control
- belt displacement control
- paper wrap control