Print Device Gamut - Xerox DocuColor 40 Reference Manual

2
2-3 Controlling printed color
Color transparency film
RGB monitor
Offset press (white)
Other print device
Print device color adjustments
Your print device may allow you to adjust printed color manually. You can typically
increase or decrease toner intensity on an individual or global basis. These settings may
affect DocuColor 40 CP output. Make sure these settings remain the same (preferably
at a neutral position) from one print job to the next.

Print device gamut

Different color reproduction techniques have different color capabilities, or gamuts.
Color transparency films have comparatively large gamuts, as do color monitors. The
color gamut that can be produced using process inks or CMYK toners on paper is
smaller. This is why some colors that can be displayed on a color monitor, especially
bright saturated colors, cannot be reproduced exactly by your DocuColor 40 CP print
device—nor, for that matter, can they be reproduced on press using process colors.
Moreover, different print devices have different gamuts—some colors that your print
device can produce cannot be reproduced on an offset press, and vice versa. The
following illustration provides a graphical representation of this concept.
You need to account for the gamut of your print device when designing on a color
monitor. When printed, colors that fall outside the print device's gamut are "mapped"
to printable colors. This process, referred to as gamut mapping, takes place when
color data is converted or adjusted to meet the color space and gamut requirements of
a print device.
The DocuColor 40 CP is specially designed to perform gamut mapping at high speed
with high quality results. It provides these color management features automatically,
using either built-in default settings or settings that you specify for a particular print