Drum Cartridge; Outline - Canon MF8100 Series Service Manual

Note 1. In full-color printing, the detection is performed for the cartridges in each color. In monochrome printing, it is performed just for the Bk cartridge.
Note 2. If the toner level written in the memory tag is lower than the detected toner level, data is not updated.

2.3.6 Drum Cartridge

2.3.6.1 Outline

The machine's drum cartridge is equipped with a mechanism that forms images on the ITB. The drum cartridge consists of a drum cartridge and an ITB unit con-
structed as a single entity.
The following shows the machine's cartridge and the arrangement of loads.
Light guide
Light
emitter
Light
receiver
Developing rotary/
toner level detection circuit
DCNT Board
Light
emitter
Toner
Stirrer
Light
receiver
<High toner level>
Toner cartridge
Light
emitter
Light
receiver
<Low toner level>
F-2-35
Stirrer
Chapter 2
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