Another process that's been lost is Cibachrome/Ilfochrome. Direct positive color dye emulsion, made to be printed from chrome film or exposed as a direct positi

Another process that's been lost is Cibachrome/Ilfochrome. Direct positive color dye emulsion, made to be printed from chrome film or exposed as a direct positive. https://en.m.wikipedia.org/wiki/Ilfochrome https://en.m.wikipedia.org/wiki/Ilfochrome RA-4 color paper, on the other hand, is alive and well; most of it gets used for digital prints, exposed by laser printer and then developed.