Mita DP-2800 Service Manual page 70

5A2
Area not exposed by laser
Surface
potential =
Area exposed by laser
250 V
Developing roller bias
160 V DC + 1.8 kV AC
Developing
+ + + + + + +
Toner
20 V
A toner replenishment sensor is provided within the developer. As the toner supply from the
toner container dwindles and the toner level lowers in the reservoir, the sensor translates
it through its sensing plate, urging the toner motor to feed more toner.
Sensing plate
Toner sensor
Sensable level
Toner
Developer unit
4-12