Canon IRC2100 Manual page 150

G-2 Glossary
color rendering dictionary
See CRD (color rendering dictionary).
color separation
The process of separating a color
image into the color components for
printing—cyan, magenta, yellow, and
black. Also used to refer to the four
sheets of film that result from the
process of separating a color image.
color space
A model for representing color in
terms of measurable values, such as
the amount of red, green, and blue in
an image. RGB and CMYK color
spaces correspond to color devices—
monitors and copier/printers
respectively. Other color spaces, such
as CIE Lab, are based on
mathematical models and are device-
independent. They are not based on
the color response of a particular
device. See gamut.
colorant
An ink, dye, toner, paint, or other
pigment that modifies the color of
media to which it is applied.
ColorWise color management
iR C2100/2100S's ICC-open color
management solution, which is an
easy-to-use system that addresses the
needs of both casual and experienced
color management users.
composite printer
Any output device that can print
directly in color without first creating
color separations. A composite print
can be used as an early proof of an
offset print job.
continuous tone (contone)
Describes a photographic image that
contains gradient tones from black to
white (such as a 35mm transparency
or a photograph). Continuous tones
cannot be reproduced in that form for
printing, but must be screened to
translate the image into dots.
continuous tone (contone) image
An image containing fine gradations
of tones, such as a photographic
image.
CRD (Color Rendering Dictionary)
A feature of color management
systems and PostScript Level 2 and
PostScript 3 color copier/printers that
maintains the best possible translation
of color from one color device to
another. A color rendering dictionary
(CRD) is used by the color
management system or the copier/
printer's PostScript interpreter when
converting data between color spaces.
The iR C2100/2100S includes several
CRDs, each of which provides a
different color rendering style.
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-