Ricoh D0C8, Service Manual

Page: 492 / 1647

Image Adjustment
D0CA/D0C9/D0C8/D0CB 4-258 SM
4.20.7 PRINTER GAMMA CORRECTION
• The ACC is usually sufficient to adjust the color balance to get the best print output.
You only need the printer gamma correction to fine-tune to meet user requirements.
Use SP modes if you want to modify the printer gamma curve created with ACC. You can adjust
the gamma data for the following:
• Highlight
• Middle
• Shadow areas
• IDmax.
The adjustable range is from 0 to 30 (31 steps).
Copy Mode
- KCMY Color Balance Adjustment -
The adjustment uses only "Offset" values.
• Never change "Option" values (the default value is 0).
Highlight (Low
ID) Levels 1 through 6 in the C5-Y chart 13-level scale
Middle (Middle
ID) Levels 3 through 10 in the C5-Y chart 13-level scale
Shadow (High
ID) Levels 7 through 12 in the C5-Y chart 13-level scale
ID max Level 13 in the C5-Y chart 13-level scale (affects the entire image density)
Offset The higher the number in the range associated with the low ID, middle ID, high
ID, and ID max, the greater the density.
There are four adjustable modes (can be adjusted with SP4-918-009):
•
Copy Photo mode
•
Copy Letter mode
•
Copy Letter (Single Color) mode
•
Copy Photo (Single Color) mode