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Guide to Printing Using Xerox Production Print Services
Color Adjustments
•
[Trapping]: Compensates for misregistration occurring at
the printer. When color planes are not registered exactly with
one another, white gaps and regions of shifted hue can
appear at object boundaries. When the [Trapping] check box
is selected, registration problems are masked, resulting in
better color print quality. Select the appropriate width for
trapping.
When you select Trapping, the Trapping Setup dialog box will
appear. Enter the number for Fast Scan pixels and Slow scan
pixels, or select the Printer default. A diagram is displayed to
better help you make your selection.
•
[Black Overprint]: Prevents the background of a black
object from being removed when being printed over color.
When there is any misregistration, this background removal
causes a band of white to be visible at the edges of the black
objects that are printed directly onto colored areas. Selecting
the [Black Overprint] check box eliminates this white space.
The following settings are available in the [Color Adjustments]
section. In each section, you can select a value from the pull-
down menu or enter a value in the text box.
•
[Lightness]: Determines the lightness or darkness of the
printed output.
– A value of -100 causes the output to appear black.
– A value of 100 causes the output to appear white.
– A value of 0 (zero) causes no change in the output.
NOTE: The output resulting from these selections may be
affected by the content of the original image.
•
[Contrast]: Increases or decreases the variation between
light and dark areas of the output. Higher contrast values
increase the light and dark contrast; lower values decrease it.
– A contrast value of -100 causes the output to appear a
solid midtone gray.
– A contrast value of 100 causes the output colors to use
either full color or no color for cyan, yellow, magenta, and
black, depending on the content of the original image.
Printing a job using the DocuSP web interface
4-19
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