Photographic color developer replenishing concentrates

G - Physics – 03 – C

Patent

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Details

G03C 7/413 (2006.01) G03C 5/26 (2006.01)

Patent

CA 2277272

Improved one-part concentrated color developing replenishers and methods of preparation thereof comprising a photographically inert single ring heterocyclic amide. The replenisher concentrates are packaged in a single unit which upon dilution provides ready-to-use replenishing solutions for photographic materials. The concentrated replenishers are characterized by a one-part multi-phase concentrate wherein developing agents are retained in an upper phase and protected from deterioration which normally occurs in the highly alkaline lower phase.

L'invention concerne des régénérateurs concentrés simples de développement en couleurs améliorés et leurs procédés de préparation. Ces régénérateurs comprennent un amide hétérocyclique à noyau simple photographiquement inerte et sont emballés dans une unité qui au moment de la dilution fournit des solutions d'entretien prêtes à être utilisées pour des matières photographiques. Les régénérateurs concentrés sont caractérisés par un concentré multiphase simple et les développateurs sont retenus dans une phase supérieure et protégés contre la détérioration qui survient normalement dans la phase inférieure fortement alcaline.

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