Konica Minolta BIZHUB 25E Field Engineering Manual page 58

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.
No. Part name
1 Blade
3 Developing roller
5 Toner agitator A
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).
No. Part name
1 OPC drum
3 CGL: Charge Generation Layer
5 Base
6
1
No.
1
5
No. Part name
2 OPC drum
4 Toner supply roller
6 Toner agitator B
Part name
2 CTL: Charge Transport Layer
4 UCL: Under Coat Layer
2-10
2
3
4
2
3
4
5