Canon MF720 Series, Руководство по обслуживанию, Страница: 38 / 327

Image Formation System
Overview
The image formation system holds the core function of this product to form toner images on paper.
To form toner images, the DC controller controls various high-voltage power supply PCBs.
This product is a compact and high-speed color printing device that employs the 4-drum and intermediate transfer method.
The image formation system is composed of the following components.
• 4 cartridges
• ITB unit
• Secondary transfer external roller
The figure below shows the image formation system schematically.
DC controller
High-voltage power supply
Secondary transfer
external roller
ITB
Cartridge
Laser beam
ITB cleaning unit
Fixing
unit
Photosensitive drum
Primary transfer pad
Laser scanner
Parts
Y M C Bk
ITB Cleaning Brush
ITB Cleaning Roller Toner Cartridge Developing Cylinder
Photosensitive
Drum
Color Displacement
/Density Sensor
Secondary Transfer
External Roller
Primary
Transfer Pad
ITB Unit
Secondary Transfer
Internal Roller
Image Forming Process
■ Overview
The image forming process of this product is composed roughly of 6 blocks and 9 steps.
2. Technical Explanation
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