What does collotype mean?
Definitions for collotype
ˈkɒl əˌtaɪpcol·lo·type
This dictionary definitions page includes all the possible meanings, example usage and translations of the word collotype.
Princeton's WordNet
collotype, collotype printing, photogelatin processnoun
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
Wiktionary
collotypenoun
A dichromate-based photographic process formerly used for large-volume mechanical printing.
collotypenoun
An image produced by this process.
Wikipedia
Collotype
Collotype is a gelatin-based photographic printing process invented by Alphonse Poitevin in 1855 to print images in a wide variety of tones without the need for halftone screens. The majority of collotypes were produced between the 1870s and 1920s. It was the first form of photolithography.
ChatGPT
collotype
Collotype is a photographic printing process that utilizes plates made of glass covered in gelatin and hardening agents. It's a historical technique known for its remarkable detail, richness, and subtlety of tone and is beneficial for creating high-quality reproductions of artworks, maps, or manuscripts. However, it is rarely used today due to its complicated and time-consuming process.
Wikidata
Collotype
Collotype is a dichromate-based photographic process invented by Alphonse Poitevin in 1856. and was used for large volume mechanical printing before the existence of cheaper offset lithography. It can produce results difficult to distinguish from metal-based photographic prints because of its microscopically fine reticulations which comprise the image. Many old postcards are collotypes. While no longer a commercial process, its possibilities for fine art photography were first employed in the United States by Alfred Stieglitz. The collotype plate is made by coating a plate of glass or metal with a substrate composed of gelatin or other colloid and hardening it. Then it is coated with a thick coat of dichromated gelatine and dried carefully at a controlled temperature so it 'reticulates' or breaks up into a finely grained pattern when washed later in approximately 16 °C water. The plate is then exposed in contact with the negative using an ultraviolet light source which changes the ability of the exposed gelatine to absorb water later. The plate is developed by carefully washing out the dichromate salt and dried without heat. The plate is left in a cool dry place to cure for 24 hours before using it to print.
Chambers 20th Century Dictionary
Collotype
kol′o-tīp, n. a photographic process much used for book illustrations and advertising purposes. [Gr. kolla, glue, and Type.]
Matched Categories
Numerology
Chaldean Numerology
The numerical value of collotype in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of collotype in Pythagorean Numerology is: 6
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"collotype." Definitions.net. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.definitions.net/definition/collotype>.
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