4-color process printing is valuable because studies have shown that the use of color in print materials increases readership and information retention between 40%-65%. Our process involves taking a color image and separating it into 4 different color values (called a color separation) by the use of filters and screens. Before this process it was done with photographic film on a graphic arts camera, but is mostly done now digitally using special software. This results in a color separation of 4 images that, when transferred to printing plates and sequentially printed on a printing press with the colored inks cyan (blue), magenta (red), yellow and black (the k in cmyk), reproduces the original color image. Most colors are reproduced with just the four process ink colors.