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Document Exposure/Feeder System; Document Exposure System - Canon MF8580Cdw Service Manual

Mf8500/mf8200 series
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Also See for MF8580Cdw 
Manual - 750 pages
User manual - 750 pages
Getting started - 292 pages

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Technical Overview > Document Exposure/Feeder System > Document Exposure System > Major Components

Document Exposure/Feeder System

Document Exposure System

■ Overview
Specifications / Control / Function List
Item
Document Exposure
LED
Document Scan
Book Mode:
• Scan by the shift of the contact sensor (CIS)
ADF:
• Document stream reading by fixed contact sensor (CIS)
Scanning Resolution
[CL]
600 dpi (horizontal scanning) x 600 dpi (vertical scanning)
300 dpi (horizontal scanning) x 600 dpi (vertical scanning)
300 dpi (horizontal scanning) x 300 dpi (vertical scanning)
[BK]
600 dpi (horizontal scanning) x 600 dpi (vertical scanning)
300 dpi (horizontal scanning) x 600 dpi (vertical scanning)
Number of Gradations
256 Gradations
Magnification
25% to 400%
Horizontal scanning direction: Image processing by the Main Controller
PCB
Vertical scanning direction: The speed at which the carriage moves and
image processing by the Main Controller PCB
Lens
CIS/Color
CIS
Number of lines: 1 line
Number of pixels: 5184 pixels as total pixels (5107 pixels as effective
pixels)
Maximum document scanning width: 216mm
CIS Drive Control
Drive Control by Reader Motor (M720)
Document Size
None
Detection
Dirt Sensor Detection
Yes
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Technical Overview > Document Exposure/Feeder System > Document Exposure System > Major Components
Function / Method
T-2-4
■ Major Components
Followings are the major components for Document Exposure System.
• The contact sensor to scan document.
• The Reader motor (M720), The drive pulley, The drive belt, to shift The contact sensor
In image scanning control, the contact sensor is shifted by rotating the Reader motor based
on the drive signal from the Main Controller PCB and scan the original on the copyboard
glass. When ADF is in use, image is scanned by feeding the originals by ADF instead of
shifting the contact sensor.
Reader Motor
(M720)
Drive Pulley
2-6
Drive Belt
Drive Pulley
Contact Image Sensor (CIS)
F-2-4
2-6

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