Issues to Avoid with Wide Format Printing: Ghost Busting
Mechanical ghosting is a problem that all wide format printers must face if they are printing a border around an image. But there are three simple, yet effective ways around this problem. One involves some extra equipment and the other two are simple adjustments to the press or ink amounts. With these solutions to wide format ghosting, they might start calling you the ghost buster.
Large Format Printing and Poster Printing: Avoiding Mechanical Ghosting [PrintIndustry.com]