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of rows to the inch is the screen frequency. The lower the screen frequency, the larger
the individual halftone dots and the more noticeable they are. Your print company may
ask for “120 line screen” which would be a screen frequency of 120LPI.
Screen/dot type: PostScript printers can print halftone dots in a variety of shapes.
Generally round dots give the best results but some presses work better with a different
dot shape.
Print Color Separations
If you want to print all the colors in one pass through the printer, deselect PRINT COLOR
SEPARATIONS. This full color output is referred to as a composite output.
If you want to produce output separated into the CMYK process colors and any spot
colors, select PRINT COLOR SEPARATIONS. If you have one spot color, for example, you
will get five printouts: one for each of the CMYK colors, and one for the spot color.
Your print company can advise you on whether they want composite or separated files.
Separating to a local printer is useful if you want to view each separation.
You can now set options for the individual separations.
To output a separation for an ink color, select the left-hand check box. By default all
plates are set to print.
You can also view each separation within Xara Designer Pro X with the "Window ->
Show Printer Colors" options.
To set an ink color to overprint, select the right-hand check box. Overprinting is described
later in the chapter.
To change the screen angle and
frequency, click on the ink name to
select it then click PROPERTIES.
This opens the SEPARATION
PROPERTIES dialog:
Angle: To change the screen angle for this color, type in a new value in degrees.
Frequency: To change the screen frequency for this color, type in a new value. This
overrides the default screen frequency (described in PostScript options earlier) for this
color.
Print this ink: This duplicates the check box in the main SEPARATIONS dialog.