 For many applications at this size resolution becomes secondary to print speed - which is why many machines over 3m wide are designed for speed over resolution.In the 1980s billboards were generally printed at resolutions as low as 80dpi (dots per inch).Resolutions today are much higher because of the improvements in technology but printing billboards, vehicle graphics, building wraps and the like do not require the ultra-high resolutions of 1440dpi and upwards often associated with standard wide format printers.