Method of producing a planographic printing plate

• Main Authors: TODA, YUZO, WIEGERS, RONALDUS J. T. H, KOOPMANS, SIPKE JAN, SEKIYA, TOSHIYUKI
• Format: Patent
• Language: English; French; German
• Published: 15.12.2004
• Edition: 7
• Subjects: APPARATUS THEREFOR; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LINING MACHINES; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PERFORMING OPERATIONS; POWDER METALLURGY; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM; PRINTING; PRINTING PLATES OR FOILS; PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS; STAMPS; TRANSPORTING; TYPEWRITERS

Disclosed is a planographic printing plate with high quality and low cost obtained by casting molten aluminium directly and continuously into a thin aluminium plate, wherein the surface which reveals less ripple marks upon etching with an alkaline solution, is used for the manufacturing of the printing plate. Disclosed furthermore is a planographic printing plate obtained by casting molten aluminium directly and continuously into a thin aluminium plate, wherein the side that is the top side during the casting process is used for the manufacturing of the printing plate.