Santa Maria, CA
Miss Scarlet In The Study With A Knife
Photograph - Photograph-cyanotype-gum
I think that it was Miss Scarlet in the study with a knife. Of course, I could be wrong!
This is the perfect unique piece for a game room! Or perhaps you're looking for an intriguing invitation to a mystery party. (Remember, you can insert custom text on all cards!) If you enjoy this theme and style, check out the other fun game images in my Materials and Processes gallery.
The base of this image is a two color gum. The overlay pieces are cyanotypes. This is a scan of the original hand-done work. The process is explained below.
"Gum bichromate, or gum dichromate as it is also known, is a photographic printing process invented in the early days of photography when, in 1839, Mungo Ponton discovered that dichromates are light sensitive. William Henry Fox Talbot later found that colloids such as gelatin and gum arabic became insoluble in water after exposure to light. Alphonse Poitevin added carbon pigment to the colloids in 1855, creating the first carbon print. In 1858, John Pouncy used colored pigment with gum arabic to create the first color images.
Gum prints tend to be multi-layered images sometimes combined with other alternative process printing methods such as cyanotype and platinotype. A heavy weight cotton watercolor or printmaking paper that can withstand repeated and extended soakings is best. Each layer of pigment is individually coated, registered, exposed and washed. Separation negatives of cyan, magenta, and yellow or red, green, and blue are used for a full-color image. Some photographers prefer substituting the cyan emulsion in the CMYK separations with a cyanotype layer. A simple duotone separation combining orange watercolor pigment and a cyanotype can yield surprisingly beautiful results.
Low density photographic negatives of the same size as the final image are used for exposing the print. No enlarger is used, but instead, a contact printing frame or vacuum exposure frame is used with an ultraviolet light source such as a mercury vapor lamp, a common fluorescent black light, or the sun. The negative is sandwiched between the prepared paper and a sheet of glass in registration with previous passes.
The print is then floated face down in a bath of room-temperature water to allow the soluble gum, excess dichromate, and pigment to wash away. Several changes of water bath are necessary to clear the print. Afterwards, the print is hung to dry. When all layers are complete and dry, a clearing bath of sodium metabisulfite is used to extract any remaining dichromate so the print will be archival." Wikipedia
Featured in these Fine Art groups:
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January 26th, 2013
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