colin flanary graham | carbon
Discovered by Alphonse Poitevin in 1855. Related to gum printing, the carbon transfer is a dichromated colloid process. Essentially, a pigmented layer of gelatin is sensitized with a solution of ammonium dichromate, which renders the gelatin insoluble when exposed to UV light. The negative controls the degree of this, resulting in a continuous toned image when the tissue is transferred to a final paper support and developed in warm water. The resulting image has a subtle relief due to the hills of the blacks where the tissue is thickest and the valleys of paper whites where there is little exposure. The resulting relief formed on certain surfaces can exhibit a startling tactile quaility, in a very real sense a photographic carving.
info: colin at colinflanarygraham.com
tel: 360-460-6374 address: 1021 Crescent Beach Rd Port Angeles Wa 98363