Printer Gamma Correction - Ricoh B230 Service Manual

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When you open the drum positioning plate
When you remove or replace the motors, clutches, and/or gears related to the
drum/development/transfer sections
When you remove or replace the image transfer belt, image transfer belt unit or
laser optical housing unit

3.3.6 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 (default value is 0).
Highlight (Low ID)
Middle (Middle ID)
Shadow (High ID)
ID max
Offset
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
SM
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.
3-7
Rev. 04/2007
B230/B237/D042