método para fabricar um precursor de forma de impressão, precursor de forma de impressão litográfica, método para produção de uma forma de impressão e forma de impressão litográfica

Phenolic resin compositions formulated for use in lithographic exposure processes are given a heat treatment at 40-90° C. for at least 4 hours shortly after their coating onto lithographic substrates, to produce lithographic printing forms. It is found that such a heat treatment improves later expos...

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Bibliographische Detailangaben
Hauptverfasser:	JOHN ANDREW HEARSON, STUART BAYES, ANTHONY PAUL KITSON, CHRISTOPHER DAVID MCCULLOUGH, JAMES LAURENCE MULLIGAN, CAROLE-ANNE SMITH, KEVIN BARRY RAY, ALAN STANLEY VICTOR MONK, JOHN DAVID RICHES, DAVID STEPHEN RILEY, GARETH RHODRI PARSONS, RICHARD DAVID HOARE, MARK JOHN SPOWAGE, PETER ANDREW REATH BENNETT
Format:	Patent
Sprache:	por
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CINEMATOGRAPHY COLOUR PRINTING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY 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 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 PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	Phenolic resin compositions formulated for use in lithographic exposure processes are given a heat treatment at 40-90° C. for at least 4 hours shortly after their coating onto lithographic substrates, to produce lithographic printing forms. It is found that such a heat treatment improves later exposure processes, in particular by rendering the sensitivity of the compositions less variable, over time.