DEAD-FRONT BEZEL BLEED-THROUGH STOP
Original Publication Date: 1984-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
Dead front machine control panel bezels are prone to bleed through from one message to another, even though lamps that illuminate the bezels are isolated from each other in some cases by an "eggcrate" behind the bezel. The light bleed-through problem is traced to light traveling internally (scattering) through the unusually thick, clear bezel material. A solution to this problem is to cut the internal light path by providing internal "eggcrates" within the bezel itself by molding, milling or by removing bezel material from around each message on the control panel from the back of the bezel. If the resulting grooves are then filled with an opaque material, light leakage is further inhibited.