QMS Magicolor CX, User Manual

Page: 42 / 222

Other Methods
of Color
Control
QMS magicolor CX User's Guide 2-14
patterns, and banding typically found in traditional printing. In general,
it should be used for these purposes:
n
If you’re printing photographic images, especially photographs of
faces, to get photo-realistic color output
n
For jobs containing a mixture of text and graphic images
» Note: Some application software may be set up to ignore the printer's
color settings. For information on preventing this, see “Connecting to
a PC” or “Connecting to a Macintosh” in chapter 1, “Connecting the
Printer.”
ColorDepth technology for 1200 x 600 dpi offers an increased level
of color image quality at the printer’s highest resolution.
» Note: Your printer requires at least 40 MB RAM for ColorDepth.
ColorSmooth screening is not supported at 1200 dpi.
Printer Default Color Rendering Dictionaries
(CRDs)
Since the printer has a different range of colors than other color
devices (such as your monitor), a color rendering dictionary is neces-
sary to tell the printer how to print colors that are out of its range. The
printer has three default CRD settings:
The Colorimetric CRD is designed for very basic color matching and
one-to-one conversion from CIE color to CMYK color. With Colorimet-
ric chosen as the printer default CRD, all colors are reproduced
exactly unless a specified color is “out of gamut” (out of the printer's
range). For out of gamut colors, the Colorimetric CRD substitutes the
closest “in-gamut” color. The result is that exact color matches
between the two devices are maintained wherever possible, but the
printed image may have a smaller range of colors than the original
image (since several image colors may be mapped to a single printer
color). We recommend that you use this CRD for printing spot colors.
The Business CRD matches the images on a monitor as closely as
possible (WYSIWYG). Use the Business CRD for computer-gener-
ated graphics.