SURFACE ROUGHENING METHOD FOR SUPPORT MATERIAL FOR PRINTING PLATE

PROBLEM TO BE SOLVED: To reduce an energy consumption for mechanical and particularly electrochemical surface roughening and to increase reproducibility on manufacturing a support material for a printing plate. SOLUTION: Aluminum for a printing plate, or the support material made from aluminum, comp...

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Bibliographische Detailangaben
Hauptverfasser:	PLIEFKE ENGLEBERT, JOERG KLAUS, BRENK MICHAEL
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR APPARATUS THEREFOR CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY CINEMATOGRAPHY ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROFORMING ELECTROGRAPHY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES HOLOGRAPHY LINING MACHINES MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE MATERIALS THEREFOR METALLURGY ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM PRINTED CIRCUITS PRINTING PRINTING PLATES OR FOILS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce an energy consumption for mechanical and particularly electrochemical surface roughening and to increase reproducibility on manufacturing a support material for a printing plate. SOLUTION: Aluminum for a printing plate, or the support material made from aluminum, comprises a preliminarily stamped surface. The preliminary stamp includes hemisphere indentions having a diameter of 2-50 μm and an average diameter of 20-30 μm. The support material is electrochemically roughened in an electrolyte selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid, and chloride or nitrate ion of aluminum salt. Current density of an alternative current is 30-45 A/dm2. Surface roughness RA after surface roughening is uniform and within a range of 1.0-1.5 μm, and all regions are roughened.