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Woodburytype

 
 

Also known as ‘photoglypty’, this photomechanical process was based on work with chromate relief images (Auer, 1852; Pretsch, 1854), and patented by W. B. Woodbury in 1866. The process produced a bichromated gelatin relief, which was used to emboss a soft lead plate; this intaglio held a liquid gelatin ink whose varying thicknesses produced the fine, continuous-tone gradations of the pigmented gelatin image. Woodburytypes resemble carbon prints in colour and surface finish, but show a more obvious relief. Woodburytype was employed from the mid-1870s until the early 1890s, primarily for art reproductions. It was succeeded by less labour-intensive gravure processes suited to longer print runs at a lower cost.

— Hope Kingsley

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Wikipedia: Woodburytype
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Nāser al-Dīn Shah - Shah of Persia - Carte de Visite Woodburytype-Print from Felix Nadar Paris

The term Woodburytype refers to both a photomechanical process and the print produced by this process. The process produces continuous tone images in slight relief. A chromated gelatin film is exposed under a photographic negative, which hardens in proportion to the amount of light. Then it is developed in hot water to remove all the unexposed gelatin and dried. This relief is pressed into a sheet of lead in a press with 5000 psi. This is an intaglio plate. It is used as a mold and is filled with pigmented gelatin. The gelatin layer is then pressed onto a paper support.

The Woodburytype was developed by Walter B. Woodbury in 1864, first used in a publication in 1866 and widely used for fine book illustration from about 1870 to 1900.[1] It was the only commercially successful method for producing illustration material capable of replicating the subtleties and details of a photograph. It is the only mechanical printing method ever invented which produces true middle values and does not make use of a screen or other image deconstruction method.

Notes

  1. ^ Ovenden, 216; Rosenblum, 198; Bloom, 30. Auer and Auer give the date of its invention as 1866.

See also

References

  • Art & Architecture Thesaurus, s.v. "Woodburytype (process)". Accessed 28 September 2006.
  • Auer, Michèle, and Michel Auer. Encyclopédie internationale des photographes de 1839 à nos jours/Photographers Encyclopaedia International 1839 to the Present (Hermance: Editions Camera Obscura, 1985).
  • Bloom, John. "Woodbury and Page: Photographers of the Old Order". In Toward Independence: A Century of Indonesia Photographed (San Francisco: The Friends of Photography, 1991), 29-30.
  • Oliver, Barret. A History of the Woodburytype: The First Successful Photomechanical Printing Process and Walter Bentley Woodbury (Nevada City, Ca, Carl Mautz Publishing, 2007).
  • Ovenden, Richard. John Thomson (1837-1921): Photographer (Edinburgh: National Library of Scotland, The Stationary Office, 1997), 35-36, 216.
  • Rosenblum, Naomi. A World History of Photography (New York: Abbeville Press, 1984), 34, 197-198.
  • Union List of Artist Names, s.v. "Woodbury, Walter Bentley". Accessed 28 September 2006.

 
 
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Walter Bentley Woodbury (photography)
photomechanical processes (photography)
19th-century photographically illustrated publications (photography)

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Photography Encyclopedia. The Oxford Companion to the Photograph. Copyright © 2005 by Oxford University Press. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Woodburytype" Read more