Controlling The Supply Of Toner - Canon imagerunner C5180 Service Manual

Chapter 9

9.7.5 Controlling the Supply of Toner

1. Developing Assembly
When the ATR sensor detects the low toner level within the developing assembly, toner supply control from the
toner receptacle to the developing assembly is carried out.
The toner supply level is determined by detecting the revolution of the toner supply screw using the toner supply
screw revolution sensor inside the toner receptacle.
Toner supply level to the developing assembly per 1 revolution of the screw is constant. Therefore, the toner
level is calculated by cumulated revolution number.
DC controller PCB
J124 J126
Toner container (Y)
M20
Toner feedscrew
Developing assembly
Y drum unit
ATR sensor
F-9-39
9-45