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Albertype

From George Eastman House : Notes On Photographs

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The first practical photomechanical collotype process, introduced by Josef Albert. A glass plate is coated with dichromated gelatin and exposed from the glass side. After washing and drying, the gelatin is coated with a second layer of dichromated gelatin. When dry, the gelatin is exposed in contact with a negative. Conventional printing is done in a press by inking the emulsion after it is dampened with water.[1]


  1. Osterman, Mark. 2007. Albertype. In The Focal Encyclopedia of Photography: Digital Imaging, Theory and Applications, History, and Science, ed. Michael R. Peres, 38, Focal Press.