Color Toner Supply - Canon iR C6800 Series Service Manual

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7.7.4 Color Toner Supply

The color toner is sent to the color toner developing assembly from the color toner cartridge by way of the buffer

assembly. The supply path consists of 2 segments: the path in the buffer assembly and the path to the color

developing assembly. In the former, toner inside the color toner cartridge is moved to the buffer assembly of the

developing rotary. The work is done by rotating the developing rotary so that toner inside the color toner cartridge

falls on its own into the buffer assembly. The latter, on the other hand, is done when the toner feedscrew found inside

the buffer assembly rotates; the feedscrew is controlled by the DC controller, which turns on the development motor

(M3) and the color toner supply clutch (CL2) according to the amounts of toner needed as indicated by the result of

ATR control.

The toner feedscrew inside the buffer assembly is driven to rotate for a specific period of time to supply the color

developing assembly with the exact amount of toner from the toner buffer assembly.

1 Color toner feedscrew

2 Buffer assembly

3 Color developing assembly

M3: development motor

CL2: color toner supply clutch

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