SINGLE-PART BLEACH-FIXING COMPOSITION AND METHOD OF PROCESSING

摘要

A method of processing photographic color papers is carried out using an aqueous single-part photographic bleach-fixing composition in a bleach-fixing step for less than 60 seconds. The single-part bleach-fixing composition has a pH of from from 4.4 to 5.4. It comprises at least 0.1 mol/l of an iron ammonium-ligand photographic bleaching agent that comprises at least 95 mol % a ferric ammonium-ligand photographic bleaching agent provided that the ligand in the bleaching agent is not diethylenetriaminepentaacetic acid, at least 0.1 mol/l of a thiosulfate as the sole photographic fixing agent, and sulfite ions present in an amount sufficient to convert at least 50 mol % of the ferric ammonium-ligand photographic bleaching agent to ferrous ammonium-ligand compound within 30 days at 20 to 45°C. At least 90 mol % of the total ammonium and alkali metal cations in the bleach-fixing composition are ammonium ions.