First developed in 1942, chromogenic color prints are basically composites of three monochromatic layers, which combine into full-color images. As with most chemical processes, chromogenic prints make use of paper treated with a chemical mixture. In this case, that emulsion contains light-sensitive silver crystals. Silver halide, as you'll learn below, is more commonly associated with black-and-white photography because it creates a monochromatic image. But with chromogenic prints, three silver halide layers are dyed specific colors—cyan, magenta, and yellow—and combine to form a full-color image.
These prints last longer than any inkjet print.