Trapping is a printing technique in which adjacent printed colors are slightly overlapped to ensure that white space does not appear between the colors if there is mis-registration on press.

The goal of this activity is to use the Prinergy Tools Auto Trapping function to trap a file.

Task 1: Apply Auto Trapping to a file

1. Launch the Adobe Illustrator application.
2. Open this document: 
   
3. In the Illustrator menu bar, from the Window menu, select Prinergy Tools > Trap Tool > Auto Trapping.
   
   
   
   
4. In the Trap dialog box, from the Trap Ticket list, select Default.
5. Click the Trap button: 
   If no objects have been selected, a message window will appear asking if you want to select all objects.
   
6. To apply trapping to the entire file, click Yes.
   After trapping, a new trapping layer will be automatically generated, and the dialog box of the trapping color pairs will appear.
   When this dialog box appears, the automatic trapping has finished.
   

Task 2: View the trapped objects

To view the trapped objects, toggle the View icon  on and off in the Prinergy Trap-1 layer.