
Chapter 4
4-18
4.5 Image Processing
4.5.1 Outline(iR105)
0006-9796
iR105
The digital processing and controlling of image memory of the machine are performed by the main controller PCB. The following is a block diagram
showing its digital image processing:
F-4-17
4.5.2 Overview of the Image Flow
0008-2265
iR105i/iR105+ / iR9070 / iR8070
The following shows the flow of images in relation to the machine's functions:
8
Reader unit
Edit processing
Density conversion
(LUT)
Binary processing
(error diffusing method; text,
text/photo, print/print photo)
Image memory
control
Binary processing
(dither screen; film photo)
8
Density correction
(
γ
conversion)
8
8
8
Edge emphasis
1
Compression/expansion,
rotation,
enlargement/reduction
SDRAM
I/O control
HDD
4 or 2
Thickening
4 or 2
1
Smoothing
1
Binary-binary density
conversion
Printer unit
Printer PG
1
8
8
Main controller block
Density adjustment
(F-value conversion)
Intensity/density conversion
(LOG conversion)
Enlargement/reduction
(main scanning direction)
Reader PG
Image data
after shading
Содержание ImageRunner iR8500 Series
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Страница 99: ...Chapter 2 Installation ...
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Страница 258: ...Chapter 5 5 6 T 5 6 1 Fuse PCB 4 Inverter PCB 2 Reader controller PCB 5 CCD AP PCB 3 Differential PCB ...
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