Canon imageRUNNER ADVANCE 6055 Series, Service Manual

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Technology > Fixing > Controls > Fixing temperature control
Technology > Fixing > Controls > Fixing temperature control
Controls
■ Overview
Cleaning Web
length detection
Fixing temperature
control
Down sequence
control
Control to prevent
paper-wrapping
Thermistor
reciprocating control
Upper Separation Claw
reciprocating control
Cleaning Web
drive control
Protective function
The control to prevent
temperature rise
at the edge
(Shutter Control)
NO Control/Function Overview
1 Fixing temperature control To control temperature of the Fixing Roller to prevent fixing
failure
2 Down sequence control In the case of large difference between the target temperature
and the detected temperature, this control drops productivity
to prevent fixing failure and image failure.
3 Paper anti-wrapping control To prevent failure of the Fixing Assembly caused by wrapping
of paper around the Fixing Roller and the Pressure Roller.
4 Shutter Control To control the shutter position in order to prevent the
temperature rising at the edge.
5 Thermistor reciprocating
control
To prevent scar on the Fixing Roller by the Main Thermistor,
this control moves the Main Thermistor back and forth.
6 Upper Separation Claw
reciprocating control
To prevent scar on the Fixing Roller by the Upper Separation
Claw, this control moves the Upper Separation Claw back and
forth.
7 Cleaning Web drive control To prevent fixing offset, this control removes residual toner on
the surface of the Fixing Roller.
8 Cleaning Web level detection To detect level of the Cleaning Web.
9 Protective function To detect error by Thermistor.
To detect error by Thermoswitch.
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■
Fixing temperature control
● Overview
To prevent fixing failure, temperature control of the Fixing Roller is executed with the following
timing.
NO Temperature control Overview
1 Temperature control during
startup
To control temperature to reach the standby temperature.
To be switched from the following 4 modes according to the
environment temperature/ humidity and the temperature of
the Fixing Roller:
• Normal startup mode
• Low temperature environment startup mode
• High humidity environment startup mode
• Recovery mode
2 Temperature control during
standby
To control temperature so that printing can be performed
immediately after receiving the print request signal
3 Temperature control during
printing
To control temperature by the temperature table according
to the paper type and the paper basis weight.
4 Other temperature
adjustments
Following shows other temperature adjustments
• To control temperature for reducing power consumption.
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