Alphonse-Louis Poitevin

Alphonse-Louis Poitevin

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Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: Alphonse-Louis Poitevin (1819-1892), French chemist, photographer and civil engineer whose interest in photography arose from the publication of the Daguerreotype process. The basis of his research was to devise a system of producing multiple images from a single exposure. He made a major contribution in the development of photolithography, introducing a system based on bichromated gelatine in 1855 which he patented and started a small photolithographic printing firm in Paris producing plates for several publications. He also patented the collotype process.

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Keywords: 19th c, bichromate, bichromated gelatin, chemist, civil engineer, collotype, daguerreotype, french, gelatin, lithography, photographic, photography, photolithography, poitevin, research

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