User`s manual

126 ScanWizard Pro for Mac OS X
Advantages & Problems of GCR
The main advantage of GCR is it reduces the effects of variations on press, so
when ink coverage varies, the colors become slightly lighter or darker, rather than
changing hue.
Increased amounts of GCR also allows your printing company to use a somewhat
higher proportion of black ink, thus reducing cost — which saves you money.
High levels of GCR and/or UCR expand the overall gamut, so darker and more
saturated colors are achievable. However, with too light GCR you may not get as
saturated a color as with higher levels of GCR.
Professional CMYK Profiles Package: What You Get From Them
Professional CMYK Profiles packages were developed for the serious professional
concerned about productivity, quality separations, and color fidelity.
With Professional CMYK Profiles, you get six different UCR/GCR settings that
conform to generic CMYK SWOP, Japanese Ink Standard, and Euroscale
standards — Letting you select the best values for your printing conditions.
Any of these combinations give you the control you need to optimize your
separations for your proofing and printing applications, reduce your printing costs,
and minimize ink trapping problems on press.
However, check with your printer as to the optimal UCR/GCR setting to select for
your printing conditions. The following pages list the settings for the three
standards.