Gum printing is a way of making photographic reproductions without the use of silver halides. The process uses salts of dichromate in common with a number of other related processes such as sun printing.
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.
Gumprinting is a way of making photographic reproductions without the use of silver halides. The process uses salts of dichromate in common with a number...
Gum arabic (gum acacia, gum sudani, Senegal gum and by other names) is a natural gum originally consisting of the hardened sap of two species of the Acacia...
Guar gum, also called guaran, is a galactomannan polysaccharide extracted from guar beans that has thickening and stabilizing properties useful in food...
more hydrophilic (water attracting). For printing, the stone was first moistened. The water only adhered to the gum-treated parts, making them even more oil-repellant...
guar gum and tamarind derivatives are most commonly used today in disperse screen printing on polyester. Alginates are used for cotton printing with reactive...
Look up GUM, Gum, or gum in Wiktionary, the free dictionary. Gum or GUM may refer to: Adhesive Bubble gum Chewing gum Natural gum, viscous materials of...
model, based on the CMY color model, used in color printing, and is also used to describe the printing process itself. The abbreviation CMYK refers to the...
Natural gums are polysaccharides of natural origin, capable of causing a large increase in a solution's viscosity, even at small concentrations. They are...
experimental in their portrayal of nudity, using reflective distortions and printing techniques to create abstractions or depicting real life rather than classical...
was in fact later widely used as a photoresist in making printing plates for mechanical printing processes.[citation needed] The surface of a zinc or other...
many shortcomings, including the high cost of the film, processing and printing, the mediocre color quality, rapid fading and discoloration of highlights...
photography and complexity of processing color film (see C-41 process) and printing color photographs and also to the rise, first of instant photography technology...
paper base, known as a print, either by using an enlarger or by contact printing. The word "photography" was created from the Greek roots φωτός (phōtós)...
of the then-current processes, such as calotypy, cyanotypy, gumprinting, platinum printing, bromoil and Autochrome colour. Clarence White's impeccable...
Traditional Black & White Photography including digital negatives and hybrid printing. Taylor & Francis. p. 411. ISBN 978-1-136-08749-3. Retrieved 15 February...
effect can be enhanced by toning in sepia tones or cool shades. Special printing techniques such as cyanotype may be used. Infrared photography is a specialized...
Sun printing may refer to various printing techniques which use sunlight as a developing or fixative agent. Cyanotype, also referred to as "blueprinting"...
negative is most commonly transferred ('printed') onto photographic paper. Printing the negative onto transparent film stock is used to manufacture motion...
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