Postscript Applications; Choosing Colors In Postscript Applications - Canon ColorPASS-Z5000 Color Manual

5

5-5 PostScript applications

PostScript applications
Most applications used for illustration, pixel editing, and page layout can create the
PostScript information they send to PostScript copier or save in PostScript files.
Illustrator, Photoshop, PageMaker, QuarkXPress, and FreeHand are all PostScript
applications.
PostScript applications work with color in many different ways. Most allow you to
choose process colors (by entering percentages for cyan, magenta, yellow, and black), as
well as named colors from a custom color system such as PANTONE. When you
print composites, these applications send process-color equivalents for named spot
colors to the copier. In some applications, you can also choose colors using the RGB,
HSB, HSL, or other color models.
Generally, PostScript applications send color information to the ColorPASS as CMYK
data. An exception to this is an RGB image placed in the document, which is sent
directly to the ColorPASS (unless you specify special color management settings in the
application). In addition, some PostScript applications that allow you to define colors
in RGB or other color models can also send data to the ColorPASS in those color
spaces.
Color controls in PostScript applications are typically designed for printing on an
offset press, and some adjustments are required for printing to the ColorPASS.
Displayed versions of colors you choose in these applications may not match
ColorPASS output exactly, and named colors may not print accurately on the
ColorPASS, since these colors typically require custom inks.

Choosing colors in PostScript applications

With PostScript applications, you can create colors using any of the color models
supported by the application. All PostScript applications support CMYK; some also
support RGB and other color models based on monitor display values. PostScript
applications also allow you to choose named colors using one or more color libraries,
such as PANTONE (see page 5-7).
You should use swatch color matching to ensure predictable color printing results with
the ColorPASS or to match your ColorPASS color output to colors produced by other
print devices.