Copying Temperature Control - Canon iR4570 Series Service Manual

Chapter 9
A: start-up control
B: copying temperature control
C: 65 (%) power supply
D: X (%) power supply
E: Y (%) power supply

9.3.2.4 Copying Temperature Control

iR2270 / iR2870 / iR3570 / iR4570 / iR3530
The machine uses this mechanism to control the temperature of the fixing heater to an optimum level while a
recording medium is passing through the fixing film assembly; specifically,
1.the machine varies the power ratio in relation to the difference between the temperature detected by the thermistor
and the target control temperature.
2.if the temperature detected by the thermistor is higher than the target control temperature for a specific period of
time (0.6 sec), the machine will decrease the power ratio; if lower, it will increase the power rate.
9.3.2.5 Changing the Fixing Film Control Temperature
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
When a fixing failure occurs or creases appear, the fixing film control temperature can be changed in the service
mode as shown below.
COPIER> OPTION> BODY> TEMP-CON (to switch the fixing temperature mode for heavy paper)
COPIER> OPTION> BODY> TEMPCON2 (to switch the fixing temperature mode)
0: OFF (default), 1: -10 deg C, 2: -6 deg C, 3: -3 deg C, 4: +3 deg C, 5: +6 deg C, 6: +10 deg C, 7: 15 deg C
9.3.2.6 Temperature Control in Response to Automatic Double-Sided Copy
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
9-6
180
C
85
400ms 200ms
500ms 300ms
B
A
D E
F-9-3
0006-6584
0007-5452
0007-5453