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G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C1/00—Photosensitive materials
G03C1/64—Compositions containing iron compounds as photosensitive substances
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FR608621D1925-04-031925-04-03Procédé et papier pour la reproduction photographique très rapide, en positif, de dessins sur calques, par tirage
ExpiredFR608621A
(fr)
Un procedimiento y su correspondiente aparato, para conseguir que las películas y papeles fotográficos se mantengan verticalmente durante la operación de revelado, fijado y lavado.