Fixing Control Circuit; Throughput Reduction Control - Canon D1300 Series Service Manual

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Technical Overview > Fixing System > Fixing Control Circuit > Throughput Reduction Control

Fixing Control Circuit

The Fixing control circuit controls the temperature in the Fixing Assembly. The printer uses an
on-demand Fixing method.
The figure below shows the configuration of the Fixing control circuit.
H201/2010
TP1/11
TH201/2010
FIXING TEMPERA TURE signal
FIXNG HEATER CONTROL signal
Fixing heater
control circuit
DC controller
• Fixing Heater (H201/2010): Heats the Fixing Film
• Thermistor (TH1/11): Detects Fixing temperature (Contact type)
• Thermoswitch (TP201/2010):Prevents an abnormal temperature rise of the Fixing
Heater (Contact type)
These temperature controls in the Fixing Assembly are performed by the Fixing Heater control
circuit and the Fixing Heater safety circuit according to the commands from the DC Controller.
2 Technical Overview > Fixing System > Fixing Control Circuit > Throughput Reduction Control
Fixing film
Pressure roller
Fixing heater
safety circuit
Fixing control circuit
Low-voltage power supply unit
Engine controller

■ 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.
● Small Size Paper Speed Control
Fixing Mode
ENVELOPE
ENVELOPE2
ENVELOPE3
Postcard
Long Narrow
Normal/Light/OHT
Label/Heavy1/Heavy2
Envelope/ Envelope2/
Envelope3
● 16K Paper Speed Control
Fixing Mode
F-2-24
Normal/Light/ 1 - 27 imprints
OHT 16 ppm
(Normal mode)
Normal/Light/ 1 imprints or
OHT more
6 ppm
Envelope2/ 1 - 89 imprints
Quiet 17 ppm
Label/ 1 - 34 imprints
Envelope/ 17 ppm
Envelope3
Heavy1/
Heavy2/
Postcard
Throughput
1 - 2 imprints 3 - 4 imprints 5 imprints
17 ppm 12 ppm 8 ppm
1 - 3 imprints 4 - 7 imprints 8 - 22 imprints
17 ppm 12 ppm 8 ppm
1 - 3 imprints 4 - 5 imprints 6 imprints or
12 ppm 8 ppm more
6 ppm
1 - 3 imprints 4 - 5 imprints 6 imprints or
12 ppm 8 ppm more
6 ppm
1 - 280 imprints 281 imprints or
2 ppm more
1 ppm
1 imprints or more
3 ppm
Throughput
28 - 39 imprints 40 - 79 imprints 80 - 199
14 ppm 12 ppm imprints
10 ppm
90 imprints or
more
14 ppm
35 imprints or
more
8 ppm
2-20
6 imprints or
more
6 ppm
23 imprints or
more
6 ppm
T-2-8
200 imprints or
more
8 ppm
T-2-9
2-20