Xerox DocuColor 250 Online Help Manual page 137

P r od u c t Na me Bo o k N am e
Setting up Trapping
To set up Trapping:
1. Within Job Manager or Queue Manager, select [Properties...]
from the right-click menu.
2. Select the Image Quality tab.
3. Select the Options FAB.
4. Mark the Trapping checkbox to enable Trapping.
5. Within the Trapping Setup window, you may select pixel
values for the width and height parameters, from 0 to 20
pixels.
NOTE: The default setting is 1 pixel in both directions.
6. If you wish to use vector over image trapping, select the
checkbox for [Image/Vector Trapping].
7. Select [OK] to accept the trapping settings, or [Cancel] to
reject changes. More Information...
Usage Advice: Generally, a trapping zone above 4 pixels is
visually obvious and not pleasing to the eye. A higher value
should be considered carefully; however, the ability to set a
higher trap zone has been included to give the user control
over individual images that have been poorly trapped
individually.
Two direction parameters are included because the feed
direction has a marginal effect on image quality. However, in
nearly all cases, the user would set these two values the
same.
If you are setting the trap width for a queue, you may choose to
set this option for override by selecting the [Override] check box in
the Color Properties tab.
Setting Image Adjustment options
The Image Quality: Image Adjustments FAB in the Queue
Properties window also contains settings that can be used more
effectively by skilled or advanced users. They are:
• Lightness
– controls the relative brightness of the color in the printer's
gamut
– can be set to the desired level +/-100 units using the spin
box
• Contrast
– controls the difference of tonal gradation between the light
and dark values within an image in the printer's gamut
– can be set to the desired level +/-100 units using the spin
box
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