Platinotype
[plat-n-oh-tahyp] /ˈplæt n oʊˌtaɪp/
noun, Photography.
1.
a process of printing positives in which a salt is used, rather than the usual silver salts, in order to make a more permanent print.
2.
Also called platinum print. a print made by this process.
/ˈplætɪnəʊˌtaɪp/
noun
1.
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
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