Canon imageRUNNER ADVANCE 6075 Series Service Manual page 111

2
Technology > Image Formation System > Controls > Developing
● Dust-collection Bias Control
To collect toner which floats over the Photosensitive Drum during developing process.
<Control description>
The dust-collection bias (DC negative), which has been generated on the Develop High
Voltage PCB (PCB12), is applied to the Dust-collection Roller.
The bias value is fixed.
Developing High Voltage PCB(PCB12)
Photosensitive Drum
Dust Collecting Roller
2 Technology > Image Formation System > Controls > Developing
● Developing Supply Shutter Opening/Closing Mechanism
There are shutters at the Supply Mouths of the Developing Assembly and the Buffer Unit to
prevent toner scattering.
The Developing Shutter and Buffer Shutter is opened/closed in conjunction with push-in and
pull-out of the Developing Assembly.
<Opening and Closing Operations of the Developing Shutter>
By pushing the Developing Assembly in the main body, the Developing Shutter comes in
contact with the Buffer Unit.
By pushing the assembly in farther, the Developing Shutter opens along the side of the Buffer
Unit. By pulling the Developing Assembly out from the main body, the Developing Shutter
closes by its own weight so the Supply Mouth is closed
Buffer Assembly
Developing Assembly
Push
F-2-78
Developing Assembly
Developing Assembly
Shutter
Buffer Assembly
Developing Assembly
Shutter
Developing Assembly
2-57
Shutter Open
Toner
F-2-79
2-57