Pc Drum Cleaning - Minolta Di251 Service Manual

18. PC DRUM CLEANING

• The Cleaning Blade is used to scrape residual toner off the surface of the PC Drum.
• The spent toner is conveyed by Spent Toner Feed Rollers 1 and 2 to the Recycling Duct
and eventually back to the Developer Mixing Chamber.
• To prevent paper dust from being compacted on the edge of the Cleaning Blade, the PC
Drum is turned backward as soon as a copy cycle is completed if the drum has been
driven for more than a given period of time.
Given period of time: 35-cpm copier = 170 s; 25/20-cpm copier = 240 s
20-cpm copier: U.S.A. and Canada Only
Cleaning Blade
Spent Toner Feed Roller 2
Spent Toner
Recycling Coil
PC Drum
Spent Toner Feed Roller 1
Recycling Duct
M-40
1171M015AA
Toner Conveying
Rollers
1171M016AA