拍品专文
The Pinatype process is described in Nadeau, Encylopedia of Printing, Photographic and Photomechanical Processes as being 'a subtractive three-colour process for photographic prints...introduced in 1906 by the German firm Lucius and Brning, based upon methods proposed by E. Edwards in 1875, C. Crosin, 1880 (Hydrotype), and L. Didier in 1903, who found the dyes suitable to selective absorption on undeveloped gelatin. "Print plates" were made by making positive transparencies from three separation negatives, on gelatin-coated plates sensitized with dichromate. These plates were stained with tricolour "Pina" dyes, the parts not hardened by light action absorbing the maximum amount of dye, which was transferred to a support of gelatin coated paper. Pinatypes were not considered light-fast...'