Canon IR2800, IR3300, IR2200 manual Outline, Ccd Ccd Pcb

CHAPTER 3 IMAGE PROCESSING SYSTEM

1 Outline

The major functions of the image processing system are as follows:

[1]CCD (image sensor) Number of lines: 1 Number of pixels: 7450 Size of pixel: 4.7 × 4.7 µm

[2]Shading Correction

Shading adjustment: executed in service mode

Shading correction: executed for each copy

[3]Auto Density Adjustment (AE)

Executed for each line in main scanning direction.

The image processing system consists of the following functional blocks:

Analog image processing block Digital image processing block

CCD

CCD PCB

Analog	A/D	Shading processing
		Auto density
image	conve
		correction (AE)
processing	-rsion
		Reader controller PCB

Controller unit

F03-100-01

Each of the PCBs used in the image processing system has the following functions:

[1]CCD/AP PCB. Drives the CCD, performs analog image processing, performs A/D conversion.

[2]Reader controller PCB. Performs shading correction, performs auto density adjustment (AE).

COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001 3-1 R