7.0

Preferences dialog box displaying Trapping pane
TRAPPING METHOD (AREA)
QuarkXPress Server Þ Preferences Þ Trapping pane
Use the Trapping Method drop-down menu to choose the method QuarkXPress
Server uses to determine the trapping relationship between object colors and
background colors.
• Choose
Absolute to trap using the values in the Auto Amount and
Indeterminate fields according to the object and background colors
involved. If the object color is dark, the background chokes the object
color by the
Auto Amount value. If the object color is light, the object is
spread into the background by the
Auto Amount value. Absolute is the
default option.
• Choose Proportional to trap using the value in the Auto Amount field mul-
tiplied by the difference between the luminosity (lightness or brightness) of
the object color and background color.
Proportional trapping compares the
luminosity of the object color and background color to determine how different
they are and applies trapping accordingly.
• Choose
Knockout All to turn off trapping.
PROCESS TRAPPING (CHECK BOX)
QuarkXPress Server Þ Preferences Þ Trapping pane
Check Process Trapping to trap each process separation plate individually
when a page contains overlapping process colors. When you print color sepa-
rations, QuarkXPress Server compares the darkness of each process component
of an object color to the darkness of the corresponding process component of
the background color and traps accordingly. For example, the shade of cyan in
an object color is compared with the shade of cyan in the background color;
similar comparisons are made for the other plates that are used for output.
This option is checked by default.
SERVER PREFERENCES
CHAPTER 2: THE QUARKXPRESS SERVER USER INTERF
ACE
|
45