Xerox 4.2 - Manual (Page 21)

Pantone Workflow updates
For DocuSP 4.2, a Pantone processing control has
been added. The user now has the ability to disable
Pantone processing.
This provides added flexibility when matching Pantone
page level elements at the press.
Some pages have three object element types: images
(bitmap data), graphics (scalable vector data), and text.
In some cases, a shift in hue may be noticed between
an image object and a graphic/text object on a page.
This shift in hue can occur when using Pantone colors
where the graphics/text have formal Pantone calls,
while a bitmap/image on the same page is not
composed of defined Pantone name/number. In
simpler terms, the bitmap has a CMYK "representation"
of a color and not a Pantone call. This difference in
construction results in proper Pantone number
rendering for the Graphics/Text element but a second
CMYK based rendering for the bitmap. Therefore,
slight hue changes between the bitmap and Pantone
graphic/text are visible.
Pantone Processing controls in Queue Manager
Consider the case of a customer who would like to print
a document that contains Pantone text, graphics, and
images. When he views the document onscreen, using
his prepress application, all Pantone data is honored.
When he prints the document on a DocuSP controlled
printer, the colors look very different from how he saw
DocuSP 3.8 and 4.0 to 4.1 Differences Document 17