Basic Construction; Overview; Major Components - Canon Color imageCLASS MF9170c Service Manual

4.1 Basic Construction

4.1.1 Overview

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
Lamp
Document scan
Reading resolution
Gradation
Productivity (ADF)
Detection of the carriage position
Magnification change (Zoom)
Lens
CCD
CCD unit drive control
Document lamp
Document size detection

4.1.2 Major Components

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
[1]
CCD relay PCB
Main controller PCB
Reading on the copyboard
The document loaded on the copyboard is read by the CCD unit, which moves in the horizontal direction.
The CCD unit is driven by the reader motor (M12).
The CCD unit home position is detected by the reader HP sensor (SR717).
T-4-1
Item
Cold-cathode tube
Book mode: Scanning by movement of the CCD unit
ADF: Scanning in stream reading mode with CCD unit fixed
600 dpi x 600 dpi
256 gradation
Single-sided: 20.8 ipm (LTR), 19.7 ipm (A4)
Double-sided: Approx. 7 ipm (A4/LTR)
Reader HP sensor (SR717)
50 to 200 %
(Sub scanning direction only. Image processing by the main controller PCB)
Fixed focus lens
Number of lines: 1 line each for RGB
Pixels: 5400 pixels/color
Maximum document reading width: Equivalent to LTR
Drive control by the reader motor (M12)
Lighting control by the inverter circuit
Not provided
[5]
F-4-1
[1] Reader motor (M12)
[3] Guide shaft
[5] Reader HP sensor (SR717)
Function/Method
[2]
[4]
[2] CCD unit
[4] Carriage belt
Chapter 4
0019-8961
0019-8963
[3]
4-1