Collotype

Collotype
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 exposed to light under a reversed negative. After the dichromate has been washed out, the film is soaked in glycerin and water. As this treatment causes swelling in those parts of the film which have been acted on by light, a plate results from which impressions can be taken with prepared ink. The albertype, phototype, and heliotype are collotypes. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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  • 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 — 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 …   Universalium

  • 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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