Four-colour printing, also known as process colour, is a method of reproducing images using four inks: cyan, magenta, yellow, and black (CMYK). By combining these inks in varying proportions, printers can replicate the full spectrum of colours found in the original image.
This technique is widely used in commercial printing, publishing, and photographic reproduction to achieve vibrant, accurate colour prints. Understanding four-colour printing is essential for photographers and designers who want to ensure that their images maintain consistent colour fidelity from digital files to printed material