Canon imageRUNNER ADVANCE C3500 III Series Service Manual page 90

No. Parts name
[1] ITB Cleaning Screw
[2] ITB Cleaning Blade
[3] Waste Toner Ejection Mouth
M02 Bk Drum _ ITB Motor
Related service mode
• Setting of the number of transparency to execute ITB cleaning
COPIER > OPTION > CLEANING > OHP-PTH
■ Secondary Transfer Outer Roller Cleaning Control
Purpose
To prevent transfer failure and soiling on the back of the paper caused by soiling of the Secondary Transfer Outer Roller
Control description
The secondary transfer cleaning bias, which has been generated on the Secondary Transfer High Voltage PCB (UN03), is applied
to the Secondary Transfer Outer Roller [2] through the Separation Static Eliminator [1].
Residual toner on the Secondary Transfer Outer Roller is attached to the ITB, and then collected by the ITB Cleaning Unit.
Control timing
Automatic adjustment by the output
of a specific number of prints
Automatic adjustment by the accu-
mulation of video count values
Jam removal
[3]
Residual toner in the ITB Cleaning Unit is fed.
Residual toner on the ITB is collected.
Ejection Mouth for toner collected on the ITB
The ITB Cleaning Screw is driven.
Adjustment timing
When a job starts
At paper interval
At job completion
At paper interval
At job completion
At recovery from jam
68
M02
[1]
Role
[1]
[2]
Condition
Each time
For each 100 accumulated images
When transparency is fed
Each time
For each accumulated video count value of 3000%
After 30 images from the start of a job and the video count value
of less than 2.0% (equivalent to accumulated video count value of
100%)
Each time
Jam occurrence
2. Technology
[2]