Xerox DocuColor 12 Color Manual page 117

G-3 Glossary
custom color system
A system of named color swatches that
can be matched on press using process or
spot colors. PANTONE and TruMatch
are examples of custom color systems.
DCS (Desktop Color Separation)
A data file standard defined by Quark,
Inc., to assist in making color separations
with desktop publishing system; five files
are created, four color files (one each for
C, M, Y, and K) and a composite color
preview file of the color image. It allows
an image-editing application to perform
color separation and pass it through to
final output with its integrity intact.
densitometer
An instrument commonly used in the
graphic arts industry to measure density
according to a specified standard.
density
A measurement of the light-absorbing
quality of a photographic or printed
image.
desktop color separation
See DCS.
DIC
A Japanese standard of specifications for
separations, proofs, and color printing.
EPS or EPSF (Encapsulated PostScript)
A PostScript file format designed to be
embedded in another PostScript stream.
Euroscale
A European standard of specifications
for separations, proofs, and color
printing.
flexography
A printing technology that uses flexible
raised-image plates. Flexography can be
used to print on non-flat materials such
as cans.
four-color printer
A printing device that uses cyan,
magenta, yellow, and black ink or toner.
gamma
A numeric value representing the
relationship (gamma curve) between the
input and output values of a color
device. If gamma equals 1, input values
are mapped exactly to output values.
gamut
A range of colors. A device gamut is the
range of colors that a device, such as a
copier/printer, can produce. An image
gamut is the range of colors in a
particular image.
gamut mapping
The conversion of color coordinates
from one device's gamut to another—
usually accomplished with algorithms or
look-up tables.