KIP 700m - 3. 1. 3 Controlling the movement of toner in the Developer Unit

K117sm3e1
3-15
3. 1. 3 Controlling the movement of toner in the
Developer Unit
There are 3 kinds of rollers called “Developer Roller”, “Regulation Roller” and “Toner Supply
Roller” in the Developer Unit.
Each roller is supplied with its own voltage.
In the following list, the voltage of the Developer Roller (-230V) is measured against the ground.
The other voltages mean the difference against the voltage of Developer Roller Bias.
Name of roller Supplied voltage
Developer Roller -230V +/-5V against the ground
Regulation Roller (Center) -80V +/-5V against the Developer Roller Bias
Regulation Roller (Both sides) 0V (Connected to the ground)
Toner Supply Roller The same voltage with the Developer Roller Bias
(Developer Roller and Toner Supply Roller are short circuited
being connected with the plate.)
Regulation Roller : Both sides Insulator Regulation Roller : Center
(0V : Connected to GND) (-80V against the Developer Roller Bias)
Developer Roller
(-230V against GND)
Toner Supply Roller
(Same voltage with the Developer Roller Bias)
NOTE
The Regulation Roller is divided into central area and both side areas by the insulator, and
individual voltage is supplied to each area.