Chrysotype

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Chrysotype (also known as a chripotype or gold print) is a photographic process invented by John Herschel in 1842. Named from the Greek for "gold", it uses colloidal gold to record images on paper.

Contents

Processes

Herschel's process

Herschel's system involved coating paper with ferric citrate, exposing it to the sun in contact with an etching used as mask, then developing the print with a chloroaurate solution. This did not provide continuous-tone photographs.

In 2006, 164 years after Herschel's work with gold printing, photographers Liam Lawless and Robert Wolfgang Schramm published a formula based on Herschel's process. [1]

Processes based on ziatype

Following the introduction of Richard Sullivan's ziatype process in 1997, which uses ammonium ferric oxalate to print out palladium images, many photographers began experimenting successfully with substituting gold for some or all of the palladium. Image quality decays rapidly as the printer approaches 100% gold in a ziatype print.

Puckett's process

Richard Puckett, an American photographer, announced in the March/April 2012 issue of View Camera magazine a chrysotype process that uses ascorbate with ammonium ferric oxalate to print out on dry paper, with no hydration, fine-grained, continuous tone gold images. Puckett presented the process at the 2013 APIS (Alternative Photography International Symposium) in Santa Fe, New Mexico. [2] Originally the process was named the Texas Chrystoype; following a major revision of the formula in 2017, Puckett renamed the process the Chrysotype Supreme.

Literature

The modern chemist and photographic historian Mike Ware published the first[ citation needed ] books covering the subject of chrysotype in 2006, The Chrysotype Manual: the science and practice of photographic printing in gold and Gold in Photography: the history and art of chrysotype.

Related Research Articles

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<span class="mw-page-title-main">Calotype</span> Early photographic process

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<span class="mw-page-title-main">Blueprint</span> Document reproduction by contact printing on light-sensitive sheets

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<span class="mw-page-title-main">Collodion process</span> Early photographic technique

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<span class="mw-page-title-main">Photographic paper</span> Light-sensitive paper used to make photographic prints

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<span class="mw-page-title-main">Cyanotype</span> Photographic printing process that produces a cyan-blue print

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<span class="mw-page-title-main">Albumen print</span> Photographic process

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<span class="mw-page-title-main">Darkroom</span> Room which can be made fully dark to allow for development of photographs and film

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<span class="mw-page-title-main">Gelatin silver process</span> Photographic process

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<span class="mw-page-title-main">Platinum print</span>

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<span class="mw-page-title-main">Anthotype</span>

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<span class="mw-page-title-main">Alternative process</span> Non-traditional or non-commercial photographic printing process

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<span class="mw-page-title-main">History of photography</span>

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<span class="mw-page-title-main">Gum bichromate</span> 19th-century photographic printing process

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<span class="mw-page-title-main">Kallitype</span>

Kallitype is a process for making photographic prints.

The following outline is provided as an overview of and topical guide to photography:

<span class="mw-page-title-main">Potassium ferrioxalate</span> Chemical compound

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References

  1. Hirsch, Robert (2009). Photographic Possibilities: The Expressive Use of Equipment, Ideas, Materials, and Processes. Taylor & Francis. p. 210. ISBN   9780240810133.
  2. Supplies, Freestyle Photographic. "APIS 2013 Alternative Photography Conference | Freestyle Photographic Supplies". www.freestylephoto.biz. Retrieved 2018-07-29.