Canon imagePRESS C1, Service Manual

Page: 261 / 1265

Chapter 4
4-13
F-4-10
4.5.2 Reader Input Image Processing
0014-1303 imagePRESS C1 P / imagePRESS C1
Image processing of image data (RGB data) scanned by CCD is performed by the Main Controller Circuit Board (SUB SJ-A, SUB R-A, SUB PF-A).
F-4-11
4.5.3 Reader Input Image Processing
0020-4002 imagePRESS C1+ (Printer) / imagePRESS C1+
Image processing of image data (RGB data) scanned by CCD is performed by the Main Controller (MAIN, SUB S-B/ZJ-A/R-A/PPF-A/DQE-A).
PC
Original
Copy
A
A
A
Print Output
Scan
Image Data
Other iR Device
SEND
FAX
PullScan
E-Mai
PDL Print
BOX
Main Controller Circuit Board (MAIN)
YUV
RGB
24
Processing used in place of
conventional input masking.
Color correction is performed
for the CCD's RGB filter.
If the image is monochrome,
only the BK signal results
from this point on.
- Background elimination (BE)
- BK signal generation
(monochrome mode)
- Trimming / Masking
- Frame removal
- RGB -> CMYK conversion
Input direct mapping
- Edge enhancement
- Smoothing
RGB phase correction
Input gamma correction
Main Controller Circuit
Board (SUB SJ-A,
SUB R-A, SUB PF-A)
Reader Unit