Adobe illustrator 10 Benutzerhandbuch

You can also set overprinting features using the Overprint Fill or Overprint Stroke options 
in the Attributes palette, as described below. You can also use the Multiply blending mode 
in the Transparency palette (see 

), or the Hard Mix 

command (see 

). 

After you have set your overprinting options, you should use the Overprint Preview mode 
to see an approximation of how the overprinting colors will print. However, it is important 
that you carefully check overprinted colors on separated artwork using integral or overlay 
proofs.

Colors knocked out by default and Overprint option in the Attributes palette selected

The Filter > Colors > Overprint Black command allows you to set black fill or black stroked 
lines to overprint (or, alternatively, to remove overprinting commands from black fill or 
black stroked lines).

You may want to overprint in the following situations:

Overprint 100% black lines against a color background when the illustration style 

allows.

Overprint when the artwork does not share common ink colors and you want to create 

a trap or overlaid ink effects. When overprinting process color mixes or custom colors 
that do not share common ink colors, the overprint color is added to the background 
color. For example, if you print a fill of 100% magenta over a fill of 100% cyan, the 
overlapping fills appear violet, not magenta.

1 Select the object or objects that you want to overprint. 

Overprint fills 
A. Cyan (bottom) B. Magenta (middle) C. Yellow (top)

2 Choose Window > Show Attributes.

3 Select Overprint Fill.

C

B

A