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Technology > Fixing System > Fixing control circuit > Small Size Paper Printing Speed Control (Throughput Reduction Control)
Technology > Fixing System > Fixing control circuit > Small Size Paper Printing Speed Control (Throughput Reduction Control)
Fixing control circuit
The fixing control circuit controls the temperature in the fixing unit. The printer uses an on-
demand fixing method.
The Figure below shows the configuration of the fixing control circuit.
FIXING TEMPERA TURE signal
Pressure roller
FIXNG HEATER CONTROL signal
Fixing film
Fixing heater
control circuit
Fixing heater
safety circuit
DC controller
Low-voltage power supply unit
Engine controller
Fixing control circuit
H1
TP1
TH1
• Fixing heater (H1): Heats the fixing film
• Thermistor (TH1): Detects fixing temperature (Contact type)
• Thermoswitch (TP1):Prevents an abnormal temperature rise of the fixing heater
(Contact type)
These temperature controls in the fixing unit are performed by the fixing heater control circuit
and the fixing heater safety circuit according to the commands from the DC controller.
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Small Size Paper Printing Speed Control (Throughput
Reduction Control)
During continuous printing, the throughput is changed to reduce heat buildup on parts not in
contact with paper, to improve fixing characteristics and reduce curling.
The throughput reduction is implemented according to the following conditions.
Fixing Mode
Throughput
Envelope
1 – 23 imprints
23 – 39 imprints
40 – 47 imprints
48 imprints or more
17 ppm
12 ppm
8 ppm
6 ppm
Envelope 2
1 – 27 imprints
28 – 62 imprints
63 – 174 imprints
175 imprints or more
17 ppm
12 ppm
8 ppm
6 ppm
Envelope 3
1 – 31 imprints
32 – 47 imprints
48 – 79 imprints
80 imprints or more
12 ppm
8 ppm
6 ppm
4 ppm
Postcard
1 – 31 imprints
32 – 47 imprints
48 imprints or more
12 ppm
8 ppm
6 ppm
16K
1 – 89 imprints
90 imprints or more
16 ppm
14 ppm
16K Rough
1 – 34 imprints
35 imprints or more
16 ppm
8 ppm
Long Narrow 1 imprint or more
3 ppm
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