Verfahren zur Herstellung einer positiv arbeitenden Druckplatte aus wärmempfindlichem Bildaufzeichnungsmaterial

PROBLEM TO BE SOLVED: To provide a heat-mode image forming element which is not corroded during IR irradiation. SOLUTION: A heat-mode image forming element is produced in such a manner that a first layer containing a polymer soluble with an alkali soln. is formed on a lithographic printing plate hav...

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Bibliographische Detailangaben
Hauptverfasser:	Van Damme, Marc, Deroover, Geert, Vermeersch, Joan
Format:	Patent
Sprache:	ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY COLOUR PRINTING ELECTROGRAPHY HOLOGRAPHY LINING MACHINES 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 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:	PROBLEM TO BE SOLVED: To provide a heat-mode image forming element which is not corroded during IR irradiation. SOLUTION: A heat-mode image forming element is produced in such a manner that a first layer containing a polymer soluble with an alkali soln. is formed on a lithographic printing plate having a hydrophilic surface, that an uppermost layer is formed on the same surface of the lithographic printing plate where the first layer is formed, and that the uppermost has sensitivity for IR rays and is impermeable for an alkali developer containing SiO2 as a silicate. The heat-mode image forming element is exposed to IR rays according to an image, and the exposed heat-mode image forming element according to the image is developed with an alkali developer. The uppermost layer contains IR dyes selected from indoaniline dyes, cyanine dyes, merocyanine dyes, oxonol dyes, porphin derives., anthraquinone dyes, merostyryl dyes, pyrylium compds., diphenyl and triphenyl azo compds. and squarylium derives.