
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
Summary of Contents for ImageRunner iR8500 Series
Page 1: ...Apr 5 2005 Service Manual iR8500 Series ...
Page 2: ......
Page 6: ......
Page 32: ...Contents ...
Page 33: ...Chapter 1 Introduction ...
Page 34: ......
Page 98: ......
Page 99: ...Chapter 2 Installation ...
Page 100: ......
Page 180: ...Chapter 2 2 78 F 2 272 2 1 1 3 ...
Page 181: ...Chapter 3 Basic Operation ...
Page 182: ......
Page 184: ......
Page 207: ...Chapter 4 Main Controller ...
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Page 245: ...Chapter 4 4 35 F 4 72 1 2 ...
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Page 247: ...Chapter 5 Original Exposure System ...
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Page 307: ...Chapter 6 Image Processing System ...
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Page 319: ...Chapter 7 Laser Exposure ...
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Page 335: ...Chapter 8 Image Formation ...
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Page 399: ...Chapter 9 Pickup Feeding System ...
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Page 483: ...Chapter 10 Fixing System ...
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Page 525: ...Chapter 11 External and Controls ...
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Page 583: ...Chapter 12 MEAP ...
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Page 589: ...Chapter 13 Maintenance and Inspection ...
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Page 610: ...Chapter 13 13 18 F 13 17 1 2 3 ...
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Page 649: ...Chapter 14 Standards and Adjustments ...
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Page 723: ...Chapter 15 Correcting Faulty Images ...
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Page 793: ...Chapter 16 Self Diagnosis ...
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Page 841: ...Chapter 17 Service Mode ...
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Page 1077: ...Chapter 18 Upgrading ...
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Page 1108: ...Chapter 18 18 28 F 18 45 3 Click Start F 18 46 4 Click Save F 18 47 5 Click OK ...
Page 1111: ...Chapter 19 Service Tools ...
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Page 1121: ...Apr 5 2005 ...
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