Abstract: A trough support rib for improved edge-to-edge printing having a media feedpath extending in a first direction, a printhead reciprocally movable in a second direction, the second direction defining a print zone, an ink trough, at least one support rib beneath the print zone within the ink trough, the at least one support rib having an upper angled edge for engaging print media defined by two beveled surfaces, the rib further including a notch for removal of overspray ink to the ink trough.

Abstract: An aircraft lighting system is disclosed in which conventional visible light sources at the exterior of an aircraft are provided with optical filters which block infra red light. In this way, it is made possible to use visible external lighting (required by Civil Aviation Authority regulations) during training exercises involving infra red sensitive night vision goggles, which would otherwise be dazzled by the infra red output of the visible lighting. Also disclosed are means of selectively controlling both visible and I.R. light sources using a single existing cable.