collotype

collotype
—collotypic /kol'euh tip"ik/, adj. —collotypy /kol"euh tuy'pee/, n.
/kol"euh tuyp'/, n., v., collotyped, collotyping.
n. Also called albertype, artotype, heliotype.
1. any photomechanical process of printing from a plate coated with gelatin.
2. the plate used for this.
3. a print made from such a plate.
v.t.
4. to produce (a print) by collotype; albertype; artotype; heliotype.
[1880-85; < Gk kóll(a) glue + -o- + -TYPE]

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▪ printing process
also called  Photocollography,  

      photomechanical printing process that gives accurate reproduction because no halftone screen is employed to break the images into dots. In the process, a plate (aluminum, glass, cellophane, etc.) is coated with a light-sensitive gelatin solution and exposed to light through a photographic negative. The gelatin is hardened in exposed areas and is then soaked in glycerin, which is absorbed most in the non-hardened areas. When exposed to high humidity, these areas absorb moisture and repel the greasy ink. The hardened areas accept the ink, and the plate can be used to print a few thousand copies of the positive image.

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Universalium. 2010.

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Look at other dictionaries:

  • Collotype — Col lo*type, n. [Gr. ? glue + type.] A photomechanical print made directly from a hardened film of gelatin or other colloid; also, the process of making such prints. According to one method, the film is sensitized with potassium dichromate and… …   The Collaborative International Dictionary of English

  • collotype — [käl′ə tīp΄] n. [< Gr kolla, glue + TYPE] 1. a photomechanical process by which inked reproductions are transferred to paper directly from an image formed on a sheet of hardened gelatin 2. the printed reproduction …   English World dictionary

  • Collotype — This article is about the photographic process. For the printmaking process, see Collagraphy. Postcard with the theme of Alte Oper in Frankfurt am Main, about 1900. Collotype is a dichromate based photographic process invented by Alphonse… …   Wikipedia

  • collotype — noun Etymology: International Scientific Vocabulary Date: 1881 1. a photomechanical process for making prints directly from a hardened film of gelatin or other colloid that has ink receptive and ink repellent parts 2. a print made by collotype …   New Collegiate Dictionary

  • Collotype — Phototypie La phototypie est un procédé d impression à l encre grasse au moyen de gélatine bichromatée et insolée sur plaque de verre. Ce procédé permet un rendu à modèle continu non tramé. Historique Procédé élaboré en 1856 par Louis Alphonse… …   Wikipédia en Français

  • collotype printing — noun a photomechanical printing process that uses a glass plate with a gelatin surface that carries the image to be reproduced; can be used with one or more colors • Syn: ↑collotype, ↑photogelatin process • Hypernyms: ↑planographic printing,… …   Useful english dictionary

  • collotype — noun a) A dichromate based photographic process formerly used for large volume mechanical printing. b) An image produced by this process …   Wiktionary

  • collotype — col·lo·type || kÉ’ləʊtaɪp n. type of color printing used for the finest facsimile reproductions of works of art …   English contemporary dictionary

  • collotype —    A photographic printing process in which a glass plate whose surface has been coated with gelatin carries the image to be reproduced. Also called a photogelatin process …   Glossary of Art Terms

  • collotype — [ kɒlətʌɪp] noun a process for making high quality prints using a sheet of light sensitive gelatin. Origin C19: from Gk kolla glue + type …   English new terms dictionary

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