Gelatin Dry-plate Negative

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Date initiated January 2021
Contributors Elsa Thyss (Page Compiler) , Emma Cieslik

Gelatin Dry-plate Negative[edit | edit source]

Historical Facts[edit | edit source]

Inventors: Richard Maddox, J. Johnson, C.E. Bennett, R. Kennett

Invented: 1870, Maddox
Historic Practitioners: Eugène Atget, Nadar, Lewis Hine, Karl Blossfeldt, E.J. Bellocq, Anne Brigman
Contemporary Practitioners: Mark Osterman, Nick Brandreth, Denise Ross, Jonathan Stead

The invention of the gelatin silver process in the UK[edit | edit source]

Since the 1850s, pioneer photographers experimented with various organic materials to be used as a binder to hold the silver on glass plate negatives. The British Richard Maddox was the first to publish a working method using gelatin in The British Journal of Photography in 1871. In this article, Maddox described how he mixed gelatin, water and silver halides, coated the resulting emulsion onto a clear glass plate, and left it to dry. After he exposed the sensitized plate to sunlight, he poured his development solution made of pyrogallic acid and silver nitrate onto the plate, washed it, and then fixed it with a regular solution of hyposulfite of soda. At the end of the paper, he concealed that many adjustments had to be refined. Indeed, the process proposed by Maddox was not immediately successful – it was actually less light sensitive than collodion plates – but it was a major starting point which would be followed by many improvements in the following years, leading to what would be a revolution in the history of photographic processes. The major improvements following Maddox’s publication in the 1870s:

  • 1873: The washing of the emulsion to remove the potassium/ammonium nitrate (J. Johnson).
  • 1874: The ripening of the emulsion with heat to increase sensitivity (C.E. Bennett).
  • 1874: The addition of iodides and chlorides to the emulsion (King and R. Kennett). Kennett’s invention is an emulsion that could be left to dry in sheets and later diluted in water when one wanted to use it. This dry material was called by Kennett the “sensitive pellicle”.

These improvements led to a photographic negative made and sensitized in advance, which could be kept for months or years without losing its light sensitivity. In 1878, the English Company Wratten and Wainwright started to produce gelatin dry plates in London. Quickly after that, in the United Stated the process began to be developed at an industrial scale.

The industrial development in the US[edit | edit source]

The American industrials quickly perceived the advantages of the British invention: the increased sensitivity and the less perishable photosensitivity, made this process perfect for industrial production. Between 1879 and 1885, 3 companies started to produce glass plate negatives: Keystone, Cramer and Eastman, which will later become the Eastman Kodak Company.
The genius of George Eastman was to conceive and develop early on a machinery for the coating of plates and to patent it in the US and in Europe. In the 1880s, the sector reaches its apogee, many companies produce gelatin glass plates and are completely independent from the beginning to the end of the production chain. Major technical issues as solved during that decade, such as the extension of the area of light sensitivity of the emulsion to green and yellow (orthochromatic plates, erythrosine dye, 1884, Eder).
The number of new companies that produce only dry plates increases enormously in the 1890s, while older companies like Eastman Kodak enlarge their conceptions of their enterprise by producing other photographic materials. The same decade, the problem of halation, which is a blurring effect caused when very bright lights were photographed against a dark background, was solved by adding an opaque layer between the glass and the emulsion or on the back side of the glass to prevent the light from reaching the glass during the exposure (non-halation plates), which became quickly adopted by all the major companies.

Improvements in the early 20th century[edit | edit source]

By the early 20th century, professional photographers would be accustomed to using dry plates. They could buy a stock of negatives in advance and shoot their images later. The development could be done at another later point, as the latent image remained recorded, even several days or weeks later, thanks to the specificities of the gelatin silver developed out emulsion.

  • 1905: A very important improvement of the process in the early 20th century was the development of panchromatic plates, sensitive to all the colors of the spectrum.
  • 1906: The Wratten & Wainwright Company acquired an international reputation when started to produce the first panchromatic plates, with the collaboration of C.E. Kennet Mees.

Identification Characteristics[edit | edit source]

Image material[edit | edit source]

Color[edit | edit source]

Support[edit | edit source]

Conservation[edit | edit source]

Housing and Storage Considerations[edit | edit source]

Housing[edit | edit source]

Storage[edit | edit source]

Exhibition[edit | edit source]

Emergency Recovery[edit | edit source]

References[edit | edit source]

  • Clerc, L.P. (Louis Philippe). La photographie pratique : exposé complet de tout ce qu’il faut savoir pour obtenir de bonnes photographies. Paris : Charles Mendel, 1902.
  • Kennett, R. “On the Gelatino-Bromide Process, with a Description of an Easy Method of Working It by Using the `sensitive Pellicle’.” The Photographic News 18, no. 592 (June 19, 1874): 290–92.
  • Maddox, Richard L. “An Experiment with Gelatino-Bromide.” The British Journal of Photography 18, no. 592 (September 8, 1871): 422–23.

Further Reading[edit | edit source]

Historic sources[edit | edit source]

  • Ackerman, Carl W. George Eastman: Founder of Kodak and the Photography Business. Beard Books, 1930.
  • Anderson, J.A. “Indexing Negatives.” The American Annual of Photography, 1906, 94–98.
  • Anonymous. Anthony’s Photographic Bulletin. The Anthony and Scovill Company, 1902.
  • Baker, T. Thorne. Photographic Emulsion Technique. 2nd edition. American Photographic Pub. Co, 1941.
  • Bennett, Charles. “A Sensitive Gelatin Emulsion Process.” British Journal of Photography 25, no. 934 (March 29, 1878): 146–47.
  • Bennett, Charles. “Negatives with Gelatin Emulsion.” The Photographic News 22, no. 1052 (November 1, 1878): 524.
  • Burton, W. K. The Development of Gelatine Dry Plates: A Practical Manual for the Amateur. Brunswick, Me: W.H. Burbank, 1890.
  • Burton, W. K. Burton’s Modern Photography: Comprising Practical Instructions in Working Gelatine Dry Plates, Printing, Etc. 11th ed., rev. Enl. London: Carter & Co, 1894.
  • Burton, W. K. “Preparing Glass: Coating It - Drying It and Packing Plates (Chapter XVIII).” In Burton’s Modern Photography Comprising Practical Instructions in Working Gelatine Dry Plates, Printing, Etc., 5th ed., 115–16. London: Piper & Carter, 1885.
  • Burton, W. K., and G. Huberson. A B C de la photographie moderne: contenant des instructions pratiques sur le procédé sec a la gélatine. 3ème éd. Nineteenth Century Collections Online (NCCO): Photography:The World through the Lens. Paris: Gauthier-Villars, 1889.
  • Clerc, Louis Philippe. Photography, Theory and Practice. London: George Brown, F.I.C., F.R.P.S., 1930.
  • Cramer, G. Hints on Negative-Making. St. Louis: G. Cramer Dry Plate Co, 1902.
  • Eder, Josef Maria. Modern Plates; or, Emulsion Photography. New York, NY: E. & H. T. Anthony & Co., 1881.
  • Eder, Josef Maria. Theorie et pratique du procede au gelatino-bromure d’argent. Paris: Gauthier-Villars, 1883.
  • Harrison, W. Jerome, W. I. Lincoln Adams, and Maddox. A History of Photography Written as a Practical Guide and an Introduction to Its Latest Developments. Scovill’s Photographic Series, no. 23. New York: Scovill Manufacturing Co, 1887.
  • “Retouching Negatives on the Glass Side.” Bulletin of Photography 17, no. 424 (September 22, 1915): 434–35.
  • Sprange, Walter. “Primary Rules for Beginners.” The American Annual of Photography, 1903, 107–10.
  • Whiting, Arthur. “Handwork on Negatives.” The Photo-Miniature: A Magazine of Photographic Information 10, no. 116 (June 1911): 353–87.

Process and Historic Material[edit | edit source]

  • Brayer, Elizabeth. George Eastman: A Biography. University of Rochester Press. 1 vols. Rochester, N.Y., 1996.
  • Brynjolf Pedersen, Karen, Ulla Bogvad Kejser, Mads Chr. Christensen, and Jesper Stub Johnsen. “Coatings on Black-and-White Glass Plates and Early Film.” In Coatings on Photographs : Materials, Techniques, and Conservation, edited by Constance McCabe, The Photographic Materials Group; 1St Edition edition. Washington, D.C: AIC, 2005.
  • Barthe, Christine. “Gélatino-Bromure d’Argent sur Verre (Négatif au).” In Le Vocabulaire Technique de la Photographie, Marveal / Paris-Musees., 70–71. Paris, 2008.
  • Deryagin, B. V., and S. M. Levi. Film Coating Theory. Focal Press, 1964.
  • Gernsheim, Helmut, and Alison Gernsheim. “The Evolution of Dry Plates.” In The History of Photography. McGraw-Hill Book Company, 1969.
  • Image Permanence Institute. “Gelatin Dry Plate.” Graphics Atlas.
  • Kingslake, Rudolf. The Photographic Manufacturing Companies of Rochester, New York. 1st ed. Rochester, N.Y.: George Eastman House, 1997.
  • Lavédrine, Bertrand, and Jean-Michel Susbielles. “Étude des Vernis des Négatifs sur Plaques de Verre.” Support/Tracé, no. 2 (2002): 25–32.
  • Lavédrine, Bertrand. “Identification of Negatives.” In Photographs of the Past: Process and Preservation, 264–67. Los Angeles: Getty Conservation Institute, 2009.
  • Neblette, Carroll B. Handbook of Photography and Reprography: Materials, Processes and Systems. Edited by John M. Sturge. 7th edition. New York: Van Nostrand Reinhold Company, 1977.
  • Newhall, Beaumont. Latent Image: The Discovery of Photography. Doubleday, 1967.
  • Salgado Aguayo, Cecilia, and Patricia Gonzales. “El uso de intensificadores en los negativos de Elias del Aguila.” In Redescubriendo a Elías del Águila: retrato fotográfico y clase media en Lima después de 1900, Instituto Cultural Peruano Norteamericano., 77–80. Lima, 2017.
  • Sixou, Christian. Une Histoire de Plaques, L’industrie de la Plaque Photographique de 1850 à 1970. 1 vols. Paris: Christian Sixou, 2003.
  • Valverde, Fernanda. Photographic Negatives, Nature and Evolution Processes. Rochester, NY: George Eastman House International Museum of Photography and Film, 2005.
  • Wentzel, Fritz. “Early Gelatin Dry Plates in Europe and America.” In Memoirs of a Photochemist, 17–25. Philadelphia: American Museum of Photography, 1960.

Conservation[edit | edit source]

General on Dry Plates Conservation[edit | edit source]
  • Allen, Sarah, and David Dungworth. “Conservation of the Bedford Lemere Photograph Collection at the NMR.” Research News 16 (2011): 36–38.
  • Berselli, Silvia, Anne Cartier-Bresson, Karin Einaudi, Michael Hager, and Grant Romer. La Fragilità Minacciata; Aspetti e problemi della conservazione dei negativi fotografici. Roma: Unione internazionale degli instituti dei archeologia, storia e storia dell’arte in Roma, 1991.* Borýsková, Štěpánka. “Glass Plate Negatives – Conservation and Restoration in Practice,” 126. Prague: Institute of Chemical Technology, Prague, 2014.
  • Cartier-Bresson, Anne. “Les négatifs: Méthodologie des traitements individuels.” In La Fragilità Minacciata; Aspetti e problemi della conservazione dei negativi fotografici, 23–32. Roma: Unione internazionale degli instituti dei archeologia, storia e storia dell’arte in Roma, 1991.
  • Garnier, Chantal, and Francoise Flieder. “Les négatifs sur plaque de verre: conservation et restauration.” Les documents graphiques et photographiques : analyses et conservation. Travaux du CRCDG, 1984-1985, Archives Nationales, 1986, 207–42.
  • Gillet, Martine. “Les Clichés Au Gélatino-Bromure d’argent Sur Plaque de Verre.” In Conservation et Restauration Du Patrimoine Photographique, Direction des Affaires Culturelles de la Ville de Paris., 66–69. Paris: Paris Audiovisuel, 1985.
  • Gillet, Martine, Chantal Garnier, and Francoise Flieder. “Glass Plate Negatives; Preservation and Restoration.” Restorator 7, no. 2 (January 1986): 49–80.
  • Grøntoft, Terje. “Air Quality Measurements for Preservation of Photographs,” 126. Prague: Institute of Chemical Technology, Prague, 2014.
  • Herrera Garrido, Rosina. “Alfred Stieglitz’s Lantern Slides: History, Technique and Technical Analysis.” Andrew W. Mellon Fellow, fourth cycle Advanced Residency Program in Photograph Conservation, George Eastman House International Museum of Photography and Film, 2007.
  • Herrera Garrido, Rosina. “Treatment of Alfred Stieglitz’s Lantern Slides.” Topics in Photographic Preservation 13 (2009): 170–80.
  • Herrera Garrido, Rosina. “Emerge: La conservación de vidrio en fotografía. Casos prácticos: negativos en placa, autocromos y placas de linterna,” Jornadas de Investigacion Emergente en Conservacion y Restauracion del Patrimonio, 363–72, 2014.
  • Koch, Mogens S. “Preservation & Treatment of Wet Plate & Other Negatives.” Presented at the Nineteenth Century Photographic Negative Processes Meeting, George Eastman House, Rochester, NY, June 2005.
  • Lavédrine, Bertrand, and Chantal Garnier. “Analysis and Restoration of Negatives Intensified with Mercuric Iodide.” Topics in Photographic Preservation 3 (1989): 12–21.
  • Orraca, Jose. “The Preservation and Restoration of Glass Plate Negatives.” Image 16, no. 2 (June 1973): 8–9.
  • Ostroff, Eugene. “Photographic Preservation, Modern Techniques,” 1974.
  • Pietsch, Katrin. “www.Photographicnegatives.Net.” Topics in Photographic Preservation 12 (2007): 64–66.
  • Puglia, Steven T. “Negative Duplication: Evaluating the Reproduction and Preservation Needs of Collections.” Topics in Photographic Preservation 3 (1989): 123–34.
  • Salgado Aguayo, Cecilia. “Conservacion del fondo Elias del Aguila.” In Redescubriendo a Elías del Águila: retrato fotográfico y clase media en Lima después de 1900, Instituto Cultural Peruano Norteamericano., 69–76. Lima, 2017.
  • Simcoe, Robert J., Edward Los, and Josh Grindley. “Harvard Plate Cleaning Machine,” 126. Prague: Institute of Chemical Technology, Prague, 2014.
  • Weinstein, Robert, and Larry Booth. Collection, Use, and Care of Historical Photographs. Nashville American Association for State and Local History, 1977.
  • Whitman, Katharine. “Saving Images on Glass.” George Eastman Museum. Around the Museum (blog), 2007.
  • Whitman, Katharine. “The History and Conservation of Glass Supported Photographs.” Andrew W. Mellon Fellow, fourth cycle, George Eastman House, 2007.
  • Whitman, Katharine. “The History and Conservation of Glass Supported Photographs.” George Eastman House, 2007.
Consolidation of Lifting Emulsion[edit | edit source]
  • Albright, Gary E. “A Tentative Method for Consolidating Gelatin Dry Plates.” Topics in Photographic Preservation 7 (1997): 36–37.
  • Derby, Deborah. “Singing The Blues: The Treatment of Water-Damaged Negatives.” Topics in Photographic Preservation 5 (1993): 84–88.
  • Rempel, Siegfried. “Cleaning and Stabilizing Photographs.” In The Care of Photographs, Siegfied Rempel., 78–104. New York, NY: Lyons & Burford, 1987.
  • Viars, Dominique. “Analyse et conservation-restauration des négatifs au gélatino-bromure d’argent vernis sur plaque de verre présentant un soulèvement de l’image.” Support/Tracé, no. 2 (2002): 33–39.
  • Viars, Dominique. “Etude de douze plaques de verre négatives au gelatino-bromure d’argent vernies présentant des soulèvements d’émulsion, réalisées par l’atelier Nadar dans les années 1880-1886.” Masters Thesis, Institut national du patrimoine, 2001.
  • Wagner, Sarah S. “A Preliminary Study: Consolidation of Gelatin Glass Plate Negatives with Organosilanes.” Topics in Photographic Preservation 3 (1989): 69–85.
Mending of Broken Plates[edit | edit source]
  • Crow, Kelly. “Abe Lincoln’s Comeback.” The Wall Street Journal 249, no. 39 (February 16, 2007).
  • Jamieson, Stephanie. “Repairing a Glass Lantern Slide: Stephanie Jamieson Sets out Some Tips for the Repair of a Glass Lantern Slide Using Vivak PETG.” Icon News, April 15, 2018, 34–36.
  • Whitman, Katharine. “Conservation of an American Icon: The Reconstruction of the Lincoln Interpositive.” Topics in Photographic Preservation 15 (2013).
  • Whitman, Katharine, and Ralph Wiegandt. “Case Study: Repair of a Broken Glass Plate Negative.” Topics in Photographic Preservation 12 (2007): 175–81.
Preventive Conservation[edit | edit source]

Contemporary Practice[edit | edit source]

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