During Printing - Canon iR C3200 Series Service Manual

Fixing main heater
(H1)
Fixing sub heater
(H2)
Fixing heat retain-
ing heater (H3)
Fixing motor
(M24)

11.3.2.4 During Printing

The temperature of the fixing roller is controlled by turning on and off the main heater according to the reading taken
by the main thermistor.
During printing, the control (i.e., timing at which control is initiated) varies according to the type of paper being used.
The following shows the sequence of temperature control when printing on plain paper:
Fixing motor
(M24)
Fixing main heater
(H1)
Fixing sub heater
(H2)
Fixing heat retain-
ing heater (H3)
WMUPR
*1: The main heater or the sub heater performs temperature
control (to 190˚C) according to the reading of the main
thermistor (TH1) or the sub thermistor (TH2).
*2: The fixing heat retaining heater repeatedly remains ON
for 4.2 sec and OFF for 1.6 sec.
Start
key ON
PSTBY PINTR
Controlled Controlled
*1
to 193˚C to 185˚C
*1
1st sheet passed
193˚C
190˚C
185˚C
174˚C
164˚C
10 sec 20 sec
*1: The main heater or the sub heater performs temperature control
(to 190˚C) according to the reading of the main thermistor (TH1)
and the sub thermistor (TH2).
PSTBY
*1
*1
300 sec 480 sec
F-11-10
PRINT
Controlled
to 174˚C
Controlled
to 164˚C
20 sec
130 sec
F-11-11
Chapter 11
*2
0000-5024
LSTR PSTBY
*1
*1
11-11