PHOTOSENSITIVE COMPOSITIONS HAVING MIXTURES OF ALKOXY AND NON-ALKOXY DIAZONIUM SALT CONTAINING COMPOUNDS

The present invention includes an imageable element, which can be: (a) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; a pol...

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Bibliographische Detailangaben
Hauptverfasser:	SYPEK, MARIA, T, PLATZER, STEPHAN, J, ALDEN, MELINDA, BAUMANN, HARALD, PERRON, PAUL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS
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Beschreibung
Zusammenfassung:	The present invention includes an imageable element, which can be: (a) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; a polyvinyl acetal binder; and a sheet substrate; or (b) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; and a sheet substrate. The imaging layer includes a total aromatic diazonium salt containing compound content of at least 10 weight percent. The molar ratio of the aromatic diazonium salt containing compound having an alkoxy substituent to the aromatic diazonium salt containing compound that is free of an alkoxy substituent is from about 1.0:1 to 70:1. Upon imagewise exposure and development, an imaged element is obtained, which is mounted on a dry printing press containing lithographic ink and used to produce printed stock. L'invention concerne un élément pouvant être imagé, tel que: (a) un élément comprenant une couche d'imagerie qui contient: un sel diazoïque aromatique contenant un composé présentant un substituant alcoxy et un sel diazoïque aromatique contenant un composé dépourvu de substituant alcoxy; et un substrat en feuille. La couche d'imagerie comprend un sel diazoïque aromatique total contenant une concentration en composé d'au moins 10 % en poids. Le rapport molaire du sel diazoïque aromatique contenant le composé à substituant alcoxy et du sel diazoïque aromatique contenant le composé dépourvu de substituant alcoxy se situe entre 1:1 et 70:1. On obtient, lors de l'exposition et du développement de l'image, un élément imagé, lequel est monté sur une presse d'impression à sec contenant de l'encre lithographique, puis utilisé en vue de produire un papier imprimé.