Overview/Configuration; Overview - Canon Color imageCLASS MF9170c Service Manual

7.1 Overview/Configuration

7.1.1 Overview

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
The image formation system forms a toner image on paper, which is controlled by the DC controller. It consists of four toner cartridges and the ETB unit, etc.
The DC controller controls the laser scanner unit, and forms an electrostatic latent image on the photosensitive drum based on the video signal received from the
main controller. At the same time, it controls the high-voltage power PCB, makes toner adhere to the electrostatic latent image, and then transfers it on paper.
A memory tag, which saves cartridge data, is built in the toner cartridge for each color. The DC controller detects the use condition of the toner cartridge by reading/
writing the memory tag.
Main
controller
PCB
Laser scanner unit
Laser beam
Memory tag
DC controller PCB
Video signals
Toner cartridge
Pre-exposure LED
ETB unit
To primary
charging roller
To developing
blade
To developing
cylinder
Attraction roller
High-voltage power PCB
F-7-1
Chapter 7
0019-5012
7-1