collotype, collotype printing, photogelatin process
(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
Source: WordNet® 3.1
collotype (countable and uncountable, plural collotypes)
(uncountable) A dichromate-based photographic process formerly used for large-volume mechanical printing.
(countable) An image produced by this process.
Source: Wiktionary
Col"lo*type, n. [Gr. glue + -type.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
17 September 2024
(noun) a small contrasting part of something; “a bald spot”; “a leopard’s spots”; “a patch of clouds”; “patches of thin ice”; “a fleck of red”
Coffee is a brewed drink prepared from roasted coffee beans, the seeds of berries from certain Coffea species. When coffee berries turn from green to bright red – indicating ripeness – they are picked, processed, and dried. Dried coffee seeds are roasted to varying degrees, depending on the desired flavor.
