Toner Container; Outline; Transfer Unit; Outline Of The Transfer Unit - Canon iR2020 Series Service Manual

Chapter 6
DC controller

6.7 Toner Container

6.7.1 Outline

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The structure of the toner bottle is shown below.
The toner bottle is charged with 1-component, insulating, magnetic toner. The stirring rod in the toner bottle is rotated by the mina motor to supply toner into the
developing assembly through the toner supply port.
[1] Stirring rod
[2] Toner bottle lever
[3] Toner supply port

6.8 Transfer Unit

6.8.1 Outline of the Transfer Unit

6.8.1.1 Outline

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The transfer unit consists of a transfer roller [1] and an static eliminator [2].
The transfer roller is driven by the photosensitive drum.
The static eliminator is biased to separate paper from the drum.
6-6
High-voltage power supply PCB
PCB
Developing bias circuit
/DVDCPWM Comparison
ASIC
circuit
/DVDCFOT
/DVACFOT
/DVACON
TNRCHKD
CPU
TNRCHKT
[3]
Developing DC bias
voltage detection circuit
DC generation circuit
Superimposition
AC generation circuit
Developing AC bias
current detection circuit
Remaining toner level
detection circuit
F-6-10
[1]
F-6-11
JP7/JP8
To developing
cylinder
JP1/JP2
From remaining
toner level sensor
[2]
0010-4281
0010-4287