Emerging in the late 1970s, digital printing used numbers and mathematical formulas to produce images. Pixels, or a matrix of dots, uses a color management system to create the images seen on screens such as computers, laptops, and tablets. Digitizing an image with pixels, leads the user of an electronic device to control the ink, toner and exposure of electromagnetic energy (light) to reproduce images. Digital printing has increased with the use of technology and computers. One advantage of digital printing is a quicker response time because the lack of prepress setup and the use of a multi-color system. Another advantage also allows the production time of an industry to increase. Because time is essential in digital printing, new companies are now being created. For instance, about 60% of printing done in 2014 used electrophotography instead of inkjet printers.
The ink used in commercial digital printing uses specialty inks and a UV light source. UV, ultraviolet, uses electromagnetic radiation, which is shorter than visible light by longer than X-rays. Ultraviolet is present in black lights, sunlight, and tanning lamps. The heat created by UV must be cooled for thermal management and decrease the possibility of damage to machine, product and atmosphere.