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Priority claimed from AT19016Dexternal-prioritypatent/AT19016B/en
Application filed by Neue Photographische Ges AgfiledCriticalNeue Photographische Ges Ag
Application grantedgrantedCritical
Publication of AT33651BpublicationCriticalpatent/AT33651B/en
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Claims (1)
PATENTANSPRUCH :
Verfahren zum Umwandeln von nicht katalysierenden bzw. bei der Katalyse nicht haltbaren Platinbildern, die aus Silberbildern durch Behandlung mit einem Bade gewonnen sind, welches Alkaliplationchlorür und saure Reaktion hervorrufende Substanzen, eventuell Alkalichlorid und Härtungsmittel enthält, in im Verfahren des Stammpatentes verwendbare Originale, dadurch gekennzeichnet, dass diese Bilder vor ihrer Benutzung zur Katatypie nacheinander oder gleichzeitig mit starken oxydationsmitteln und Ammoniak oder Ammoniumsalzen schwacher Säuren behandelt werden.
PATENT CLAIM:
Process for converting non-catalyzing platinum images or platinum images which cannot be preserved in catalysis, which are obtained from silver images by treatment with a bath which contains substances that cause alkali metal chloride and acidic reactions, possibly alkali metal chloride and hardening agents, into originals which can be used in the process of the parent patent, characterized that these pictures are treated one after the other or at the same time with strong oxidizing agents and ammonia or ammonium salts of weak acids before they are used for catatypia.
AT33651D1903-10-121906-12-17
Process for converting silver images into catalyzing platinum images.
AT33651B
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