FrameMaker Ver5.5E(PC) Di152/Di183 MECHANICAL/ELECTRICAL
01.09.05
M-41
17. PC DRUM CLEANING SECTION
• The Cleaning Blade is used to scrape residual toner off the surface of the PC Drum.
• The spent toner is conveyed through 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 (by turning the Main Motor backward) when the cumulative
time through which the PC Drum has turned reaches a predetermined value. When the
PC Drum is turned backward, a backlash in gears prevents drive from being transmitted
to other drive mechanisms.
Cumulative Time Through Which PC Drum
Has Been Driven
PC Drum Backward
Rotation Time
Approx. 330 sec
50 ms
4021M038AB
4021M039AA
PC Drum
Cleaning Blade
Spent Toner Conveying Screw 2
Spent Toner Recycling Coil
Spent Toner Recycling Duct
Spent Toner Conveying Screw 1
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