Canon imageRUNNER ADVANCE C255 Series, Service Manual, Page: 83 / 987

This machine uses a Toner Container that has a bellows mechanism at the edge. The Toner Bottle is rotated and the bellows
section is operated by driving the Bottle Motor. At that time, air pressure is used to supply toner to the Hopper Unit.
M03
Press
Shrunk Image
Toner Container
M09
M10
Bottle Motor (YM)
Bottle Motor (CK)
Developing Motor
Bottle Rotation Sensor
(PS6,7,8,9)
Flag
Exhaust
Toner Feed Screw
ATR Sensor
(Y,M,C,Bk)
(UN34,35,36,37)
Main Controller
PCB (UN81)
Video Count Value
ATR Sensor result
DC Controller
PCB (UN04)
Developing Assembly
supply count
Developing Assembly
Title Supply to the Hopper Supply to the Developing Assembly
Description Toner is supplied from the Toner Container
to the Hopper Unit. Toner is supplied from the Hopper Unit to the
Developing Assembly.
Supply timing Toner is supplied when supply is determined
necessary from the result of ATR control. Toner supply from the Hopper Unit to the
Developing Assembly is synced with the To-
ner Feed Screw.
Operation of the host machine The Bottle Motor (YM) (M09) and the Bottle
Motor (CK) (M10) are driven*. The Toner Feed Screw is turned to supply
toner to the Developing Assembly.
*) The supply amount is determined based on the output value at the time of ATR Sensor output and the time of video count.
The Bottle Rotation Sensor (Y/M/C/Bk) (PS06/PS07/PS08/PS09) starts while it is turned ON at the time of feeding. Driving the
Bottle Motor (YM) (M09) or the Bottle Motor (CK) (M10) rotates the Toner Bottle, causing the flag of the Bottle Rotation Sensor
to drop to the cut-off part of the Toner Bottle as shown in the figure below, which in turn switches OFF the sensor. When the flag
then moves away from the cut-off part of the Bottle Rotation Sensor, the sensor is switched ON.
While the Bottle Rotation Sensor is in turned OFF, 1 block's worth of toner is supplied to the Hopper Unit.
< ON > < OFF >
Toner Container
Cut-off
Bottle
Rotation
Sensor
Cut-off
Flag
2. Technology
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