Xerox Digital copier printers - Manual (Page 106)

6
6-28 Color Calibration
2. From the Apply setting to pop-up menu, choose the channels to be adjusted in the
Lightness/Darkness area of the window.
3. If needed, use the Brightness menu to adjust brightness.
Choose Lightest for a substantially lighter image, Darkest for a substantially darker
image, or one of the options in between.
N OTE : If you change a value for a color with the Brightness menu, it overrides values
set elsewhere in the dialog box.
4. If needed, adjust the Dot Gain value.
This is used for simulating press output and should be used with a press target. You can
choose either the North American or European standard. Then enter the desired Dot
Gain in the text box(es). The valid values for North American gain at 50% input are
0%-50% output. The valid values for European at 40% input are 0%-60% gain on
output; the valid values for European at 80% input are 0%-20% gain on output.
If you use Dot Gain values, the curve is smoothed so that there are no spikes or jumps
in output value.
N OTE : You will need to measure this value with a densitometer.