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F > Fixer - Pg. 118

F Fixer 118 After development, a special chemical is needed to create a permanent, fixed, image. The generic term is fixer. It is needed for both film and paper. Fixing agents, one of the last pieces of the photographic jigsaw, were proposed by Sir John Herschel and used by Fox Talbot in about 1841. Fixers work by converting unused silver halides to water- soluble compounds, which can then be