DEVELOPMENT
B234/B235/B236/D101/D102/D103 6-88 SM
6.12.5 DEVELOPMENT BIAS
The CGB (Charge Grid Bias) power pack [A] applies the negative development
bias (-550V) to both the lower sleeve roller and upper sleeve roller through the
receptacles [B] and the sleeve roller shafts [C].
The development bias prevents toner from being attracted to the non-image areas
on the drum where there is residual voltage. In addition, the development bias
changes with the image density setting chosen for the copy job by the user.
The development rollers [D] employ fixed shafts that do not rotate. This eliminates
friction on the shafts so they never require lubrication.
B234D305.WMF
[A]
[B]
[C]
[D]
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