Simulate overprinting of spot inks, Change the black overprint setting, Adjusting ink options for trapping – Adobe InDesign CC 2015 User Manual
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Printing
Simulate overprinting of spot inks
Overprint simulation is useful for simulating the effects of overprinting spot inks with different neutral density values
(for example, red and blue). When you print to a composite output device using overprint simulation, you can see if the
resulting color is one that you want to overprint or knock out.
1
In the Output area of the Print dialog box, choose a composite option in the Color menu.
Note: You cannot simulate overprinting when Composite Leave Unchanged is selected.
2
Select Simulate Overprint.
Change the black overprint setting
To knock out black objects in InDesign, you must prevent the black swatch from overprinting. Unlike most color
swatches, which knock out by default, the black swatch overprints by default, including all black strokes, fills, and text
characters. The 100% process black appears as [Black] in the Swatches panel. Knock out black objects by either
deselecting the overprint default in Preferences or by duplicating the default black swatch and applying the duplicated
swatch to color objects that knock out. If you disable the overprint setting in the Preferences dialog box, all instances
of Black knock out (remove underlying inks).
It can be cheaper and easier to have the print shop overprint process black on the press.
1
Choose Edit > Preferences >Appearance Of Black (Windows) or InDesign > Preferences >Appearance Of Black
(Mac OS).
2
Select or deselect Overprint [Black] Swatch at 100%.
Note: Overprint [Black] Swatch at 100% does not affect tints of [Black], unnamed black colors, or objects that appear black
because of their transparency settings or styles. It affects only objects or text colored with the [Black] swatch.
More Help topics
Preview color separations
Define custom stroke styles
Adjusting ink neutral density values
Adjusting ink options for trapping
Last updated 6/6/2015