- a process of printing positives in which a platinum salt is used, rather than the usual silver salts, in order to make a more permanent print.
- Also called platinum print. a print made by this process.
Origin of platinotype
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for platinotype
He claims that the platinotype paper does not contain any animal sizing.Crayon Portraiture
Jerome A. Barhydt
Historical illustrations of the development of the platinotype process.
Improvement in platinotype patented by W. Willis, junior, July.
And it looks so nice as a frame for platinotype photographs.The Wings of the Morning
A thin negative is better printed by the cold bath process, but negatives should be good and brilliant for platinotype printing.
- an obsolete process for producing photographic prints using paper coated with an emulsion containing platinum salts, the resulting image in platinum black being more permanent and of a richer tone than the usual silver image