Canon ImageRUNNER 1022iF, Service Manual, Page: 123 / 270

Chapter 8
8-1
8.1 Construction
8.1.1 Specifications, Control Mechanisms, and Functions
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/ / / / iR1018 / iR1018J / / iR1022A / iR1022F / iR1022i / iR1022iF /
T-8-1
8.1.2 Outline
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/ / / / iR1018 / iR1018J / / iR1022A / iR1022F / iR1022i / iR1022iF /
The fixing unit employing the on-demand fixing method consists of a fixing film unit (incorporating a fixing heater, thermistor, and temperature huse), a pressure
roller, and a delivery roller.
The fixing pressure roller and the delivery roller are driven by the main motor (M1). The paper separated from the photosensitive drum is moved to the inside of
the fixing assembly; the paper is then moved outside it after the toner is fused to the paper by the work
of the fixing film and the fixing pressure roller.
The delivery sensor (SR5) is used to detect paper coming out of the fixing assembly.
F-8-1
F-8-2
Item Function/Method
Fixing method by fixing film + pressure roller
Fixing heater Unitary flat heater incorporating both main heater and sub heater
Fixing temperature detection [1] Main thermistor (TH1): Temperature control and fault detection
[2] Sub thermistor (TH2): Fault detection
[3] Temperature-switch (TP): Fault detection
Fixing temperature control [1] Warm-up temperature control
[2] Normal temperature control
[3] Sheet-to-sheet temperature control
Protection functions [1] Detection of error in temperature control by thermistor
[2] Detection of temperature rise by temperature huse
Delivery sensor (SR5)
Fixing pressure
roller
Fixing inlet guide
Fixing heater
Fixing film
Delivery roller
Fixing pressure roller
Fixing film
Main thermistor (TH1)
Sub thermistor (TH2)
Temperature fuse (TP)
Fixing heater (H1)