I heard it start to be used with the rise of alternative photography...in the arts rather than in the trade. It is quite logical that Kodak did not use the term silver gelatin...in-house there was no alternative, no confusion between all their B&W products to create the need for the term. If Kodak produced a line of coated platinum papers and cyanotype papers, perhaps then we would see Kodak distinquish between them all by using the term silver gelatin papers vs cyanotype paper vs platinotype paper.


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