Toner Cleaning - Minolta CF910 Service Manual

1154SBM1607A

16-7. Toner Cleaning

• The toner particles on the Transfer Film are collected by the Fur Brush Unit.
Toner Cleaning Operation
A. The Backup Brush is pressed against the Trans-
fer Film from the inside of the Transfer Drum.
B. The Fur Brush Roller is pressed against the sur-
face of the Transfer Film.
C. A positive DC bias voltage is applied to both the
Fur Brush and Toner Collecting Rollers.
D. The Fur Brush and Toner Collecting Rollers turn
to collect toner which is in turn scraped off by the
Scraper Blade into the Fur Brush Unit.
Toner Collecting Roller
Fur Brush Unit
Scraper Blade
Toner cleaning operation is performed for two complete turns of the Transfer Drum under
the following conditions:
• During a multi-copy cycle.
• After three or more copies have been made in the full color mode.
• After 24 or more copies have been made in the mono color mode and in one-sheet
attraction.
• After 48 or more copies have been made in the mono color mode and in two-sheet
attraction.
• After predrive has been completed.
• After a 2-sided copy or manual bypass copy (other than OHP transparencies) has been
made.
Fur Brush Roller
B
M-108
Internal Fur Brush Solenoid SL15
Fur Brush Pressure Solenoid SL11
High Voltage Unit 2 HV2
Fur Brush Drive Clutch CL20
A
Backup Brush
1154M008AF