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[collotype] A process known also as phototype, and in slight variations, as Albertype, Artotype, etc. It is based on the principle that if a film of bichromated gelatin is exposed to light under a negative, and the unaltered bichromate is washed out, the

Citation Text:

[collotype] A process known also as phototype, and in slight variations, as Albertype, Artotype, etc. It is based on the principle that if a film of bichromated gelatin is exposed to light under a negative, and the unaltered bichromate is washed out, the film will have a similar property to that possessed by a lithographic stone of attracting ink in some parts and absorbing water in others, the water repelling the ink.

Citation Source:

Jones 1911

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Glossary search

[collotype] A process known also as phototype, and in slight variations, as Albertype, Artotype, etc. It is based on the principle that if a film of bichromated gelatin is exposed to light under a negative, and the unaltered bichromate is washed out, the

A Glossary of Archival and Records Terminology