In these images, colored inks, rather than differentshades of gray, are used to reproduce tinted grays.. In Photoshop, duotone refersto monotones, tritones, and quadtones as well as duotones.. Monotonesare grayscale images printed with a single, non-black ink Duotones,tritones, and quadtones are grayscale images printed with two, three, andfour inks.
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