Toshiba e-STUDIO 4500c, Service Manual

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August, 2006 IMAGE ADJUSTMENTS
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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) Levels 2 through 5 in the C4 chart 10-level scale
Middle (Middle ID) Levels 3 through 7 in the C4 chart 10-level scale
Shadow (High ID) Levels 6 through 9 in the C4 chart 10-level scale
ID max
Level 10 in the C4 chart 10-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. 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
B146R967.WMF