Development Bias - Ricoh FT6645 Manual

DEVELOPMENT 23 April 1993

4.4 DEVELOPMENT BIAS

4.4.1 Overview
[A]
[B]
[C]
The high voltage control Board [A] applies the negative development bias to
the lower sleeve roller through the receptacle [B] and the lower sleeve roller
shaft [C]. Then the bias is applied to the upper sleeve roller through the rear
sleeve roller holder made of conductive resin.
The development bias prevents toner from being attracted to the background
area of the non-image area on the OPC drum where there is residual voltage.
Also, the development bias is used to adjust image density according to the
conditions the customer selected.
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