Mathematical description of the relative spectral power distribution of a real or imaginary light source, that is, the relative energy emitted by a source at each wavelength in its emission spectrum.

Incandescent illumination, yellow orange in colour, with a correlated colour temperature of 2856K. It is defined by its energy output in the wavelength range of 380-770nm.

Daylight illuminants, equal in colour quality to noon daylight, or equal to a black body heated to 6,500K

An output device to image bitmap data onto litho film or paper. Comes in drum and flatbed models.

A colour system that defines a palate of colours to be used in a specific image. Often this makes images small and manageable.

A method of stoving ink films employing radiant energy from sources such as gas-heated panels, filament lamps or low temperature electrical radiants.

A material which is capable of being applied to a substrate to leave a permanent mark.

The bond between ink and film.

This is where the ink is held in pad printing. Also called ink well, ink reservoir, ink bath.

A type of printer that sprays tiny streams of quick-drying ink onto the paper.

This type of inkjet technology uses solid wax inserts instead of traditional inks. The wax is heated to liquidity and deposited onto the substrate through the print head, where it hardens on contact.

The amount of light reflected or transmitted by an object with black as the lowest intensity and white as the highest intensity.

Abbreviation for Integrated Services Digital Network technology that supports both voice and data services over copper telephone lines.

Abbreviation for the International Standards Organisation that designates international standards.

The process of drying a wet print by passing it through a jet-air dryer.

An ink drying system , usually conveyorised that dries ink by blowing high velocity air across the ink surface.

Standardised image compression format developed by the Joint Photographic Experts Group. Usually used for compressing full-colour or grey-scale images.

The loss of colour to colour relationship in the printed image due to inaccurate printing in one or more colours. (poor registration)

In the CIELAB colour model, a difference in hue, chroma, or intensity, or some combination of all three, that is apparent to a trained observer under ideal lighting conditions.