Gelatin process

Gelatin process
Gelatin Gel"a*tin, Gelatine Gel"a*tine, n. [F. g['e]latine, fr. L. gelare to congeal. See {Geal}.] (Chem.) Animal jelly; glutinous material obtained from animal tissues by prolonged boiling. Specifically (Physiol. Chem.), a nitrogeneous colloid, not existing as such in the animal body, but formed by the hydrating action of boiling water on the collagen of various kinds of connective tissue (as tendons, bones, ligaments, etc.). Its distinguishing character is that of dissolving in hot water, and forming a jelly on cooling. It is an important ingredient of calf's-foot jelly, isinglass, glue, etc. It is used as food, but its nutritious qualities are of a low order. [1913 Webster]

Note: Both spellings, gelatin and gelatine, are in good use, but the tendency of writers on physiological chemistry favors the form in -in, as in the United States Dispensatory, the United States Pharmacop[oe]ia, Fownes' Watts' Chemistry, Brande & Cox's Dictionary. [1913 Webster]

{Blasting gelatin}, an explosive, containing about ninety-five parts of nitroglycerin and five of collodion.

{Gelatin process}, a name applied to a number of processes in the arts, involving the use of gelatin. Especially: (a) (Photog.) A dry-plate process in which gelatin is used as a substitute for collodion as the sensitized material. This is the dry-plate process in general use, and plates of extreme sensitiveness are produced by it. (b) (Print.) A method of producing photographic copies of drawings, engravings, printed pages, etc., and also of photographic pictures, which can be printed from in a press with ink, or (in some applications of the process) which can be used as the molds of stereotype or electrotype plates. (c) (Print. or Copying) A method of producing facsimile copies of an original, written or drawn in aniline ink upon paper, thence transferred to a cake of gelatin softened with glycerin, from which impressions are taken upon ordinary paper.

{Vegetable gelatin}. See {Gliadin}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • gelatin process — ▪ photographic process also called  gelatin dry plate process        photographic process in which gelatin is used as the dispersing vehicle for the light sensitive silver salts. The process, introduced in about 1880, superseded the wet collodion …   Universalium

  • gelatin process — noun : any of various processes involving the use of gelatin: as a. : a photographic process in which gelatin is used as the dispersing vehicle for the sensitive silver salts b. : a printing process for reproducing pictures or drawings based upon …   Useful english dictionary

  • Gelatin process — Печать с желатиновых форм, фототипия …   Краткий толковый словарь по полиграфии

  • Gelatin — Gel a*tin, Gelatine Gel a*tine, n. [F. g[ e]latine, fr. L. gelare to congeal. See {Geal}.] (Chem.) Animal jelly; glutinous material obtained from animal tissues by prolonged boiling. Specifically (Physiol. Chem.), a nitrogeneous colloid, not… …   The Collaborative International Dictionary of English

  • Gelatin — (also gelatine, from French gélatine ) is a translucent, colourless, brittle, nearly tasteless solid substance, extracted from the collagen inside animals connective tissue. It has been commonly used as a gelling agent in food, pharmaceutical,… …   Wikipedia

  • Blasting gelatin — Gelatin Gel a*tin, Gelatine Gel a*tine, n. [F. g[ e]latine, fr. L. gelare to congeal. See {Geal}.] (Chem.) Animal jelly; glutinous material obtained from animal tissues by prolonged boiling. Specifically (Physiol. Chem.), a nitrogeneous colloid,… …   The Collaborative International Dictionary of English

  • Vegetable gelatin — Gelatin Gel a*tin, Gelatine Gel a*tine, n. [F. g[ e]latine, fr. L. gelare to congeal. See {Geal}.] (Chem.) Animal jelly; glutinous material obtained from animal tissues by prolonged boiling. Specifically (Physiol. Chem.), a nitrogeneous colloid,… …   The Collaborative International Dictionary of English

  • Gelatin-silver process — The gelatin silver process is the photographic process used with currently available black and white films and printing papers. A suspension of silver salts in gelatin is coated onto acetate film or fiber based or resin coated paper and allowed… …   Wikipedia

  • Gelatin hectographic process — Гектографирование с использованием (застывшей) желатиновой массы …   Краткий толковый словарь по полиграфии

  • Collodion process — An old deteriorated wet plate featuring Theodore Roosevelt The collodion process is an early photographic process. It was introduced in the 1850s and by the end of that decade it had almost entirely replaced the first practical photographic… …   Wikipedia

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