Operation Overview - Canon imageRUNNER ADVANCE C255 Series Service Manual

● Black Band Sequence
Execution condition/timing
hen the travel distance of the drum or the ITB has exceeded the designated value
Control description
In order to prevent the Cleaning Blades flip, toner is supplied to the Drum Cleaning Blade and the ITB Cleaning Blade.
● Developing Discharge Sequence
Execution condition/timing
When the average image ratio per sheet reaches the default value or less
Control description
Supply a toner in ITB, then maintain ability for developing.
■ Warm-up Rotation Control

Operation overview

This operation is performed to check the status of sensor/motor at power-on or recovery from sleep mode.
According to the conditions, one of the following 3 patterns of warm-up rotation is performed: none, short, or long.
Status
Power-on
When recovering from sleep mode of 24
hours or more
When recovering from sleep mode of at least
4 hours and less than 24 hours
When recovering from sleep mode of less
than 4 hours
Warm-up rotation con-
trol
Primary Transfer Roller
disengagement control
Stirring of waste toner
Idle rotation of the Devel-
oping Assembly
Drum Unit detection
Drum Unit life detection
Primary transfer ATVC
Color displacement cor-
rection control
Specified value or higher
Long Short
Executed Executed
Executed Executed
Executed Executed
Executed Executed
Executed Executed
Executed Executed
Executed Not executed
Fixing temperature
None
-
-
None
None
Not executed
Not executed
Not executed
Not executed
Not executed
Not executed
Not executed
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2. Technology
Specified value or lower
Long
Long
Short
None
Reference
"Primary Transfer Roller Engagement/
Disengagement Control" on page 59
-
-
"Drum Unit detection" on page 56
"Drum Unit Life Detection" on page 57
"Primary Transfer ATVC" on page 60
"Color Displacement Correction Con-
trol" on page 66