
Chapter 5
5-14
F-5-31
The following shows the functions of the PCBs associated with the image processing system:
CCD/AP PCB: CCD drive, analog image processing, A/D conversion
reader controller PCB: shading correction
The machine performs image processing for every RGB line using the reader controller PCB, and the major functions involved are as follows:
(1) Analog Image processing
(a) CCD drive
(b) CCD output gain correction, offset correction
(c) CCD output A/D conversion
F-5-32
(2) Digital Image Processing
F-5-33
5.3.6.2 CCD Drive
0012-9685
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The machine's CCD is a linear image sensor consisting of 3 lines (R, G, B, 1 line each), each line composed of 7350 photo cells. The signal that has been put through
photo-conversion in the light-receiving segment is divided into 2 analog signals of 2 channels for output: even-numbered pixels (EVEN) and odd-numbered pixels
(ODD).
F-5-34
CCD/AP PCB
Reader controller
PCB
CCD
A/D
conversion
Shading processing
Analog image
processing
Analog image processing block
Controller
block
Digital image processing block
CCD (1 line each for R, G, and B)
Analog image
signal
Analog image
processing
- gain correction
- offset correction
A/D
conversion
CCD drive
control
A12V
A5V
J101
J204
J204
J102
J205
CCD control
signal
Gain correction
data
Digital image
signal
Reader
controller
PCB
Odd-numbered
pixel
Odd-numbered
pixel
Even-numbed
pixel
CCD/AP PCB
10
Even-numbered
pixel
Gain correction
data
EEP-ROM
SRAM
CPU
Shading correction
Digital image
signal
CCD/AP
PCB
Reader controller PCB
10
Digital image
signal
8
Target
value
J101
J102
J204
J205
J203
Shift register
Light-receiving segment
(photodiode)
Shift register
Output buffer
Output buffer
Gate
Gate
1
2
3
4
5
6
Odd-numbered pixel data
Even-numbered pixel data
Summary of Contents for imagePRESS C1 P
Page 1: ...Oct 22 2008 Service Manual imagePRESS C1 Series ...
Page 2: ......
Page 6: ......
Page 38: ...Contents ...
Page 39: ...Chapter 1 Introduction ...
Page 40: ......
Page 42: ......
Page 72: ...Chapter 1 1 30 F 1 18 ...
Page 85: ...Chapter 1 1 43 T 1 26 ...
Page 88: ......
Page 89: ...Chapter 2 Installation ...
Page 90: ......
Page 94: ......
Page 234: ......
Page 235: ...Chapter 3 Basic Operation ...
Page 236: ......
Page 238: ......
Page 244: ......
Page 245: ...Chapter 4 Main Controller ...
Page 246: ......
Page 248: ......
Page 276: ...Chapter 5 Original Exposure System ...
Page 277: ......
Page 332: ...Chapter 6 Laser Exposure ...
Page 333: ......
Page 342: ...Chapter 6 6 8 F 6 10 1 Laser Light 2 Laser Shutter 3 Laser Shutter Lever 1 1 2 2 1 2 3 3 3 3 ...
Page 344: ...Chapter 7 Image Formation ...
Page 345: ......
Page 431: ...Chapter 7 7 82 ...
Page 462: ...Chapter 8 Pickup Feeding System ...
Page 463: ......
Page 504: ...Chapter 8 8 39 7 F 8 52 8 F 8 53 9 F 8 54 1 3 2 1 2 4 3 1 2 4 3 ...
Page 505: ...Chapter 8 8 40 10 F 8 55 11 F 8 56 12 F 8 57 1 4 2 3 5 4 1 3 2 1 4 2 5 3 ...
Page 506: ...Chapter 8 8 41 13 F 8 58 14 F 8 59 15 F 8 60 5 1 2 3 4 1 2 3 5 4 1 2 3 4 5 ...
Page 507: ...Chapter 8 8 42 16 F 8 61 1 2 3 4 5 ...
Page 509: ...Chapter 8 8 44 3 F 8 64 A Duplexing reversal position 4 F 8 65 2 1 A 2 1 ...
Page 510: ...Chapter 8 8 45 5 F 8 66 6 F 8 67 2 1 2 1 ...
Page 511: ...Chapter 8 8 46 7 F 8 68 8 F 8 69 3 2 1 3 2 1 ...
Page 512: ...Chapter 8 8 47 9 F 8 70 10 F 8 71 3 2 1 2 3 1 ...
Page 513: ...Chapter 8 8 48 11 F 8 72 B Duplexing re pickup stop position 12 F 8 73 3 2 B 1 3 1 2 ...
Page 514: ...Chapter 8 8 49 13 F 8 74 14 F 8 75 1 2 3 1 2 3 ...
Page 516: ...Chapter 8 8 51 F 8 77 SL3 M10 PS17 ...
Page 533: ...Chapter 8 8 68 F 8 154 1 2 4 3 2 3 4 ...
Page 534: ...Chapter 9 Fixing System ...
Page 599: ...Chapter 10 Externals and Controls ...
Page 642: ...Chapter 11 MEAP ...
Page 643: ......
Page 645: ......
Page 695: ...Chapter 12 Maintenance and Inspection ...
Page 696: ......
Page 698: ......
Page 700: ...Chapter 12 12 2 F 12 1 28 9 10 14 13 29 29 11 12 27 6 3 1 2 5 4 7 8 15 16 ...
Page 701: ...Chapter 12 12 3 F 12 2 17 20 24 23 25 26 19 18 24 21 22 ...
Page 704: ...Chapter 12 12 6 F 12 3 1 2 3 4 9 6 5 7 8 11 12 13 14 15 10 ...
Page 715: ...Chapter 12 12 17 F 12 18 1 1 2 2 ...
Page 716: ...Chapter 13 Standards and Adjustments ...
Page 717: ......
Page 719: ......
Page 732: ...Chapter 14 Correcting Faulty Images ...
Page 862: ...Chapter 15 Self Diagnosis ...
Page 894: ...Chapter 16 Service Mode ...
Page 895: ......
Page 1222: ...Chapter 17 Upgrading ...
Page 1223: ......
Page 1225: ......
Page 1256: ...Chapter 17 17 31 F 17 65 2 Turn off the main power switch and remove the USB device ...
Page 1257: ...Chapter 18 Service Tools ...
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Page 1264: ...Oct 22 2008 ...
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