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Original Articles

A Note on the Structure of Rehalogenated Image

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Pages 194-195 | Received 29 Apr 1980, Published online: 21 Jul 2016
 

Abstract

When developed-image silver is bleached in a ferricyanide-bromide solution the silver bromide does not retain the filamentary structure but crystallizes into grains the size of which depends upon the bromide concentration. At high bromide concentration (100 g/l). the reformed grains are as large as those of the original emulsion.

Résumé

Le bromure d’argent formé par blanchiment dans une solution de ferricyanure et de bromure d’une image developpée ne conserve pas la structure en filaments, mais cristallise en grains dont la taille dépend de la concentration en bromure. A concentration en bromure élévée (100 g/l) les grains reformés sont aussi gros que ceux de l’émulsion originale.

Zusammenfassung

Wenn entwickeltes Silber in einer Ferricyanid-Bromid-Lösung rehalogeniert wird, behält das entstehende Silberbromid nicht die fadenförmige Struktur des Silbers sondern es bilden sich neue AgBr-Kristallite deren Grösse von der Bromidkonzentration abhängl. Bei hohen Bromidkonzentrationen (100 g/l sind die rehalogenierlen Körner so gross wie die der ursprüng lichen Emulsion.

Riassunto

Quando una immagine di argento sviluppala viene sbiancata con una soluzione di ferricianuro e bromuro il bromuro d’argento non conserva la strutlura filamentosa ma cristallizza in granuli la dimensionc dei quali dipende dalla concentrazionc in bromuro. Con concentrazioni elevate di bromuro (100 g/l), si formano granuli con Ie stesse dimensioni dell’emulsione orginale.

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