Printer Gamma Correction; Copy Mode - Toshiba e-STUDIO4500c Service Manual

August, 2006

3.19.6 PRINTER GAMMA CORRECTION

ACC adjustment done at installation is usually sufficient to adjust the color balance
for optimum performance. Printer gamma correction is required for fine adjustment
to meet a customer requirement.
The printer gamma curve created during ACC can be modified with SP modes. The
gamma data for highlight, middle, shadow areas, and ID max can be adjusted. The
adjustable range is from 0 to 30 (31 steps).

Copy Mode

KCMY Color Balance Adjustment
The adjustment uses only "Offset" values.
Important: 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. You can get access to these with SP4918 009:
Copy Photo mode
Copy Text mode
Copy Text (Single Color) mode
Copy Photo (Single Color) mode
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.
3-185
IMAGE ADJUSTMENTS
B146R967.WMF