Paper Separation Mechanism - Ricoh K-C3 Service Manual

B245/B276/B277/B268/B269 Service Manual
During transfer roller cleaning, the high voltage supply unit supplies a negative cleaning
voltage (about –1 kV) to the transfer roller. Any negatively charged toner on the transfer
roller is then transferred back to the drum. Then a positive cleaning current (+10
microamperes) is applied to the transfer roller to push back to the drum any positively
charged toner on the transfer roller.
The machine goes through the cleaning mode in the following conditions:
Before starting the printing job (only if enabled with SP 2996; note that the default
setting is off).
Just after the power is switched on.
After a copy jam has been cleared.
After 10 or more sheets of paper have been copied and the copy job has finished.
Also, the transfer roller cleaning current can be adjusted using SP 2301 4.

Paper Separation Mechanism

The discharge plate [A] and the drum curvature of the drum help the paper to separate
away from the drum. The discharge plate is grounded.
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