Printer Gamma Correction; Copy Mode - Ricoh B156 Service Manual

COLOR ADJUSTMENT

3.13.2 PRINTER GAMMA CORRECTION

NOTE: Normally, the ACC is enough to adjust the color balance to achieve the
optimum print output. The printer gamma correction is only required for
fine-tuning to meet user requirements.
The printer gamma curve created during ACC can be modified using SP modes.
The SP value will be applied to the gamma curve created during ACC.
The gamma data for highlight, middle, shadow areas, and IDmax can be adjusted.
The adjustable range is from 0 to 30 (31 steps).

Copy Mode

KCMY Color Balance Adjustment
Adjust only the "Offset" values.
NOTE: Never change the "Option" values (default values are 0).
Highlight (Low ID)
Middle (Middle ID)
Shadow (High ID)
ID max
Offset
There are four adjustable modes:
• Text (Letter) mode: full colour
• Photo mode: full colour
• Text (Letter) mode: single color (SC)
• Photo mode: single color (SC)
SP 4-918 screen: The screen with SC on it is for single colour mode settings. The
other two screens are for full colour mode settings.
B156/B220
CÓPIA NÃO CONTROLADA
Levels 2 through 5 in the C4 chart 10-level scale
Levels 3 through 7 in the C4 chart 10-level scale
Levels 6 through 9 in the C4 chart 10-level scale
Level 10 in the C4 chart 10-level scale (affects the entire image
density.)
The higher the number in the range associated with the low ID,
middle ID, high ID, and ID max, the greater the density.
CÓPIA NÃO CONTROLADA
3-66
B502R500.WMF
SM