Laboratory test designed to simulate and accelerate the destructive action of natural weathering on inks and media. Includes exposure to artificially produced components of natural weather such as UV light, temperature variations and water spray, which are repeated in cycles at defined intervals.

Red, green and blue; also called additive primary colours. When red, green and blue light comes together in equal proportions, the result is white light.

A large, heavy digital printer for printing directly onto billboards, large banners, mesh etc. that uses compressed air to drive ink through the printheads.

The stair-stepped pattern in a bitmap image when the resolution is too low for the size of the output, also called “jaggies”.

The smoothing of the rough edge pattern by averaging and blending of the boundaries andincreasing the resolution.

Laminate with a hard smooth surface to facilitate removal of paints and marker inks.

Water based inks are inks that use water as a carrier for the dyes or pigments as colorants.

The relation of height to width of a picture.