Creo CXP6000 Color Server, Руководство пользователя

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Default Color Flow 347
The
CMYK workflow
is used to emulate various standards used in
lithographic printing. These standards represent specific combinations of
paper and ink, as well as popular proofing systems. It is also used to
emulate other printing devices such as offset presses, or other digital
printers. An example of a CMYK workflow job would be printing a test
sample for a survey before moving to an offset press to print millions of
survey forms. In such a case, it is best to emulate the offset before the job
actually goes to offset printing.
The Spire CXP6000 color server supports two CMYK emulation methods,
Device Link
(default) and
CSA
. If you would like to use the CSA method,
select
Tools
>
Settings
>
Color
and change the emulation method.
The
CMYK workflow
parameter is also used to specify the required
rendering intent for CMYK elements. All printers, monitors, and scanners
have a gamut or range of colors that they can output (or view in the case of
a scanner). If a color needs to be output and is outside the gamut of the
output device, it must be mapped or approximated to some other color,
which exists within the gamut.
Rendering Intent enables you to compress out-of-gamut colors into the
color capability of the press you are using. You can set any rendering intent
value for
CMYK
elements by selecting the required from the
Rendering
intent
list. The default value for CMYK is
Relative Colorimetric
.
In addition, you may also select to emulate the paper tint and adjust the
white point value of the used paper stock. For example, if you want to
simulate pink paper stock while using white paper stock, you may use the
corresponding emulation profile and select the
Emulate source paper tint
check box. The result will be that in addition to the job emulation, the
paper tint will be also emulated and will have a pink shade.
Note: RGB colors are not affected by the CMYK workflow.
For more information about choosing an emulation method, see Emulations on
page 426.
Note: If you select the Device Link emulation profile, you cannot select a
rendering intent because for each device link emulation profile a rendering intent
is already defined.