Kodak i800 Series User Manual page 29

Two categories of performance are provided or each color:
Colors that can be completely dropped out and colors that are
very close to complete dropout. These values were established
by using standard Pantone Matching System® Colors guide
(uncoated, 175-line screen). If the background of the document
you are using is not bright white the results may vary. The default
settings are:
Contrast% = 50
Threshold = 90
Color Filter = 175
Background = 245 this value should be set to match
background color of your document.
Resolution = 200 dpi
If the values above do not give you the desired results, you may
need to vary these values accordingly.
A-61510 January 2005 2-23