Reader Input Image Processing - Canon imagerunner C5180 Service Manual

Chapter 5

5.5.2 Reader Input Image Processing

The image data (RGB data) collected by the CCD is processed by the main controller PCB (sub SJ-A, sub R-A,
sub PDRM-PE-A).
Processing taking the place
of conventional masking.
Executes color correction
for the CCD RGB filters.
If mono-color mode,
only Bk signals hereafter.
5-14
Reader unit
24
RGB
Main controller PCB
(sub SJ-A, sub R-A,
sub PDRM-PE-A)
RGB phase correction
Input gamma correction
Input direct mapping
- Edge enhancement
- Smoothing
- See-though prevention (BE)
- Bk generation
(mono-color mode)
- Framing
- Blanking
- Frame erasing
CMYK
Main controller PCB (main)
F-5-10