General Procedures/Information
FaxCentre F116/F116L
9/04
6-47
GP 15 Fusing
Overview
• A heat roller system is used as the fusing system. The toner image is fused by the Fuser Roll
heated by the Fuser Lamp, and securely fixed by the pressure between the Fuser Roll and
Pressure Roll.
• The toner image transferred onto the paper is securely fixed to the paper.
Figure 1.
Fusing Temperature Control Circuit
• The Thermistor detects the surface temperature of the Fuser Roll and inputs that analog volt-
age into IC1A-78. Corresponding to this data, the Fuser Lamp ON/OFF signal is output from
IC1A-55, causing the Heater Lamp to turn ON or OFF to control the fusing temperature.
• When the Fuser Lamp is not turned OFF even if the Thermistor detects a high temperature mal-
function (if the surface temperature of the Fuser Roll exceeds 230
°
C), the signal from IC1-79
changes from L to H to turn OFF the Fuser Lamp.
Figure 2.
4127s025
Paper
Paper Separator
Thermostat (TS1)
Thermistor (TH1)
Fuser Lamp (H1)
Pressure Roll
Fusing Entrance Guide
Fuser Roll
1
2
1
2
PJ2
2
1
TH1
1
2
CN1
H1
TS1
PU1
DC5V
78
IC1
PWB-A
3
2
1
DT1
GND
DC5V
IC2
79
55
CMPOUT
P01
CMPIN/AN8/P63
GND
GND
H1: ON
H1: OFF
L
H
H
L
L
L
1
2
3
PJ7
4
5
1
2
3
4
5
CN2
6
7
6
7
+24V
GND
GND
GND
FUSER_LAMP
+5V
+5V
N.C.
HEAT_N
HEAT_L
3
4121s037
Содержание FaxCentre F116
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Страница 196: ...XEROX EUROPE ...