By full colour, we mean printing with CMYK (cyan, magenta, yellow and key (black)). This printing technique is used to produce a wide colour range and high-quality images. The four ink colours are printed on the paper in small dots of varying size and density. Seen from a distance, these dots flow into each other to create the illusion of a continuous range of colours. This process is known as halftoning.
For each colour, you need 1 printing plate and 1 printing unit. So for a full-colour CMYK image, you need 4 plates. Because our press has five colour units, we can print full colour plus spot colour in one pass or enhance the full colour image with an additional black plate.
As for extended full colour, we use highly pigmented inks. The more intense colours of cyan, magenta and yellow ensure reproduction with greater and deeper colour intensity. The image on the right shows how a high-pigmented yellow is mixed.