2-11
2.3.1 Developing unit
The machine uses an one-component nonmagnetic toner (negative). The toner is charged by friction be-
tween developing roller and toner supply roller, and between developing roller and blade, and adheres to the
developing roller.
6
5
3
4
No. Part name No. Part name
1 Blade 2 OPC drum
3 Developing roller 4 Toner supply roller
5 Toner agitator A 6 Toner agitator B
2.3.2 Drum structure
Photoconductive drum is a drum that has an organic material consisted UCL (Under Coat Layers) coated the
surface with OPC (Organic Photo Conductor).
1
2
3
4
5
No. Part name No. Part name
1 OPC drum 2 CTL: Charge Transport Layer
3 CGL: Charge Generation Layer 4 UCL: Under Coat Layer
5 Base