Sulfurgraphic printing is a method for taking an image directly from a printing plate using elemental sulfur in place of ink. The sulfur is combined with pigments and other ingredients to produce an image on paper. Sulfurgraphic printing was discovered and refined by Peter Menderson in 1991 while experimenting with mono-printing techniques. The process produces a unique, colorful, odorless image that is durable, non-fading, non-toxic and bio-degradable. For more information on the process of sulfur printing, see sulfurgraph.com