A new non-silver halide imaging material is proposed. The light sensitive element within the material generates free radicals upon exposure, through a fragmentation process. The free radicals, which can be generated imagewise, are then used as a catalyst to promote the reduction of an image forming element. The image forming element is a stabilized, soluble, metal salt which is chelated rendering it unaccessible for reduction by the atmosphere. The film matrix is virtually grain-free as is the final image, with some dependence on the binder and amplification process employed.
Library of Congress Subject Headings
Photographic chemicals; Images, Photographic--Materials; Photography--Developing and developers--Technological innovations
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Friedman, Patrick, "A new imaging material utilizing exposure induced free radical reduction of stabilized soluble metal salts" (1987). Thesis. Rochester Institute of Technology. Accessed from
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