Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en blueprint process300053260blueprintingferroprussiate process A photographic process using iron salts and producing an image in Prussian blue. For the resulting prints, use "blueprints" if they are reproductions of technical drawings, or "cyanotypes" if they are camera images or photograms. cianotípia proceso copia azul 2026-03-30 20:40:06