Newest Articles for Printing - Trapping

Preventing Registration Errors | Printing

Trapping is a way of compensating for errors in registration on the press and is one of the ways that people judge the quality of the printed piece. It's the process of slightly overlapping colors so that slivers of white won't appear between colors, compensating for potential registration errors. Registration errors can be caused by a few different things like: Material problems, environmental issues, mechanical problems, and of course, human error, but most common problems usually stem from the press itself and the paper.

Submitted by Printing America Staff on Thursday, May 19th, 2011

What Is Trapping?

In commercial printing trapping is the process of slightly overlapping colors to avoid gaps caused by registration errors. Color trapping compensates for registration errors caused when printing plates are not aligned properly, and unwanted white gaps shows through between colors. Trapping prevents this by intentionally overlapping colors to eliminate any minute registration issues. In the past trapping was done by creating a slight distance between image emulsion in the film and the actual plate. Today most trapping done using automated software.

Submitted by Printing America Staff on Thursday, February 3rd, 2011