Lakeside Book Company prefers to trap your files if at all possible. If supplied files already contain traps, ensure that you supply them as PDF/X-1a files, which will indicate the trap status. If you know the files are trapped, please inform us so we don’t attempt to trap them again.
If Photoshop images are supplied and the image needs to be trapped, it should be done in Photoshop. We do not apply traps within rasterized images.
Files created through copydot scanning of film cannot be trapped. The trap in the film will be carried to the files.