Offset printing is a common printing technique in which the inked image is transferred (or “offset”) from a plate to a rubber blanket and then to the printing surface. When used in combination with the lithographic process, which is based on the repulsion of oil and water, the offset technique employs a flat (planographic) image carrier. Ink rollers transfer ink to the image areas of the image carrier, while a water roller applies a water-based film to the non-image areas.
Wide format printers are generally accepted to be any computer-controlled printing machines (printers) that support a maximum print roll width of between 18 and 100 inches (460 and 2,540 mm). Printers with capacities over 100 in wide are considered super-wide or grand format.