Ricoh M5 Service Manual page 93

3. Bias Application
Black Toner Develo
Development
Color Toner Development
Develop
T
In this copier, the development bias is applied to the toner metering blade, the bias brush, and the
core of the development roller.
attracts the positively charged toner to the roller surface.
voltage as the toner metering blade. It keeps the development roller voltage stable by bleeding off any
excess charge.
This model has a fixed development bias of -225 volts.
changes in the image density setting selected by the operator.
controls image density.)
Toner Metering Blade
Bias Brush
As the development roller turns past the blade, the bias charge
Bias Plate
Bias Terminal
NOTE:
(The color toner development)
The bias brush is charged to the same
The bias voltage does not change with
(The exposure lamp's light intensity
3 - 3 5
May, 25, 1985
as Plate
erminal