I am printing posters that are 24 inches wide by 36 inches high. These are designed in Adobe In Design CS3. After I print they won't print perfectly centered on to the HP Design Jet 5500PS printer. The top and left of the posters have much more empty space then the right and bottom section.
What should I do in order to get this poster to print perfectly centered? I even tried Center off of the Mac printing options but it didn't work.