COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
CHAPTER 2 MAIN CONTROLLER
2-7 S
2 Digital Image Processing
2.1 Outline
The machine’s digital image processing and image memory are controlled by the main
controller PCB. The following is a block diagram of digital image processing:
F02-201-01
8
Reader unit
Image data after
shading
Editing
Density conversion
(LUT)
Binary processing
(error diffusion method)
(text, text/photo, print photo)
Image memory
control
Binary processing
(dither screen method)
(film photo)
8
Density correction
(
γ
conversion)
8
8
8
Edge emphasis
1
Compression/de-compression,
rotation, enlargement/reduction
SDRAM
I/O control
HDD
Image server
4 or 2
1
Smoothing
1
Binary-binary processing density conversion
Printer unit
Printer PG
1
8
8
Main controller unit
Density adjustment
(F value conversion)
Intensity/density conversion
(LOG conversion)
Enlargement/reduction
(main scanning direction)
Reader PG
Summary of Contents for iR2200 Series
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