InDesign

Trapping methods

Trap a document using any combination of methods, including the following:

  • Use process colors that don’t need trapping.

  • Overprint black.

  • Manually overprint strokes or fills.

  • Use Adobe InDesign CS3 built‑in trapping or Adobe In‑RIP Trapping.

  • Trap imported graphics using the trapping features in the illustration programs in which they were created. Refer to the documentation for these applications.

    Choose a trapping solution that complements the color output workflow you’re using, such as Adobe PostScript or PDF.

Avoid the need for trapping by eliminating the possibility of misregistration in your use of color. Prevent misregistration by making sure that abutting process colors have common inks. For example, if you specify a dark purple stroke with a vivid red fill, they will both contain a significant percentage of magenta. The stroke’s and fill’s common magenta will print as a single area, so that if misregistration occurs in the other process inks, the magenta printing plate will make any resulting gap hard to see.