Transfer Roller Cleaning - Ricoh M109 Service Training

Toner may transfer to the roller surface following a paper
jam or if the paper is smaller than the image. Periodic
cleaning of the roller is required to prevent this toner from
migrating back to the rear of new printouts.
The machine cleans the roller at the following times:
The machine first supplies a negative cleaning current
(about -4 mA) to the transfer roller, causing negatively
charged toner on the roller to move back to the drum. It
then applies a positive cleaning current (+5 mA) to the
roller, causing any positively charged toner to migrate
back to the drum.
Slide 96
No additional notes

Transfer Roller Cleaning

After initial power on.
After clearing of a copy jam
At the end of a job, if at least 10 sheet have been printed
since the last cleaning
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Ti-P1 Training