Image Transfer Current Timing - Ricoh M012 Service Training

Image Transfer Current Timing

There are two transfer current levels: low and high.
Low level: Before image transfer starts, PSU supplies +10uA to transfer
roller to prevent positively charged toner from sticking to drum surface.
High level: During image transfer, PSU supplies high level current to
transfer roller to prevent transfer roller toner from sticking to paper.
When trailing edge of paper has passed transfer roller, the PSU stops
supplying transfer current.
If machine is printing more pages, PSU supplies low level current.
You can adjust these levels, but when increasing transfer current
level, use caution:
Increasing transfer current level may produce ghost images.
Increasing transfer current level might damage OPC drum.
Slide 61
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Rinmei-P1 / M012/M013 / P1a/P1b
61
/ SP 3400N/SP 3410DN