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Chapter 20. Output > What is trapping?

What is trapping?

Trapping is the ever-so-slight overlapping of colors to prevent gaps from occurring during printing as a result of paper shift, paper stretch, or plate misalignment on press. In QuarkXPress, trapping is applied according to the way an object color—an item or text—interacts with the color in an item in the background. Use the mini-glossary at right to familiarize yourself with trapping terminology.

Before exploring the circumstances in which trapping is necessary, I'll discuss a couple of circumstances in which trapping is unnecessary.


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