The carbon-gum process: a creation Open Access Deposited
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A Thesis submitted to the faculty of The Graduate School of Arts and Sciences of The George Washington University in partial satisfaction of the requirements for the degree of Master of Fine Arts. Thesis directed by Jerry L. Lake, Assistant Professor of Photography. A hundred years ago color pigments in a raw or reduced state were applied to tint or color the surfaces of carbon prints. But these tints were not impervious to moisture. By mixing the pigments with a colloid/ bichromate solution the colors can be applied wholly or selectively to the carbon print surface. Through exposure to light the color is made insoluble. At the turn of the 20th Century, photographer Paul Anderson began doing a similar process in conjunction with platinum prints. I have chosen to affix gum-bichromated tints to carbon because I prefer the richer blacks inherent in the carbon process. Moreover, since I found no evidence that it has been done previously, the combined processes offered the challenge to try something new.