Tuesday, September 22, 2015

Welcome to Woodburytype

Woodburytype (1870-1900)

·      Invented by Walter Bentley Woodbury (1834-1885), patented in England in 1866, and built on previous work by Fox Talbot (bichromated gelatin), Alphonse Poitevin (pigmented-gelatin process), Adolphe Fargier (collodion on bichromated gelatin layer), and Joseph Wilson (carbon paper). 
o   Previously worked as gold prospector in Australia before picking up the camera and heading to Java.
·      Process (Photomechanical)
o   Photographic negatives printed to gelatin sensitized with potassium bichromate
o   Exposed gelatin, then developed in hot water and dried
o   Once dried the gelatin showed shadows and highlights in relief
o   Dried gelatin then placed in press with soft lead plate to make an intaglio plate
o   Intaglio is covered with gelatin “ink” (consistency of cold maple syrup) then a sheet of paper is laid on top and pressed
o   Soak print alum solution to harden image
o   Once dried a perfect facsimile results
·      Used primarily to reproduce high-quality artwork and photographs for publication in book format, but also advertising materials, cartes-de-vistes, and cabinet cards.  Welcomed for its almost perfect reproduction of images, with subtlety of shades better represented.  Fell out of favor due to labor intensity (each image was done separately and had to be added to the bound book) and inability to be printed with text for newspapers, magazines, etc.
o   Used by numerous book publishers in Europe and the United States, from fiction to medical works to art books.  First popular use in a book was Street Life in London (1877) by John Thomson.  Any photograph negative could be used.
·      Identification can be difficult since carbon print is a very similar process, but there are a few things to look out for:
o   Little to no fading due to sealed pigmented gelatin
o   Prominent image relief versus the flat carbon print
o   Usually smaller than 7x9 inches, never larger than 10x14 inches due to pressure needed to make larger prints
o   Possible cracks in heavily shadowed areas
o   Magnified one can see paper fibers in highlight areas and only two layers (paper and binder)
o   Many are labeled “woodburytype,” “woodburydruck,”(German) or “photoglyptie” (French)
o   Dating can be first done by the processes heyday, 1870-1900, and further based off of clothing, objects, and publication date (if found in a book)
·      Preservation is mostly concerned with image fading and mechanical issues with the paper, but a few points to be aware of are:  
o   30-40% humidity, 65 degrees Fahrenheit, with air filtration and purification
o   Stored flat with rigid secondary support to prevent curling
o   If displayed, use low light – tungsten incandescent at 50 lux
o   Careful handling of print when viewing/moving



Bibliography


Crawford, William.  The Keepers of Light: A History and Working Guide to Early Photographic     Processes. Dobbs Ferry, NY: Morgan and Morgan, 1979.

George Eastman House. “The Woodburytype - Photographic Processes Series.” Youtube.com.
            https://www.youtube.com/watch?v=cOqsaCu-_yw (accessed September 19, 2001).

Hammond, Anne Kelsey. “Aesthetic Aspects of the Photomechanical Print.” In British
Photography in the Nineteenth Century, edited by Mark Weaver, 163-179. New York: Cambridge University Press, 1989.

Image Permanence Institution. “Graphic Atlas: Identification, Woodburytype.” Graphicatlas.org.

Newhall, Beaumont, the History of Photography: from 1839 to the present. Boston: Little,
Brown and Company, 1984.

Reilly, James C. Care and Identification of 19th-Century Photographic Prints. Rochester, NY:

Eastman Kodak Company.

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