Woodburytype AlternativePhotography.com Henry William Taunt Kate Rorke The process of woodburytype is photomechanical rather than photographic , because sensitivity to light plays no role in the actual printing. It happens when a sheet of gelatin is exposed to UV-rich light through a photographic negative, causing the gelatin to harden. Then it is soaked in water to dissolve the hardened gelatin. The image is then pressed into a thick sheet of lead. That creates a mold that is filled with liquid pigmented gelatin and a piece of paper is then pressed down onto it. Cyanotype Supriya Joshi A photo printing process that produces a cyan- -blue print. Engineers used the process as a simple and low cost process to produce copies of drawings. The process involves two chemicals, ferric ammonium citrate and potassium ferricyanide . Wa
