Agfa Gevaert Nv

Marcel Frans Aelterman

Edwin Hendrik Hazenbosch

Camille Angelina Vandeputte

Roland F Beels

Gerard Laurens Vanreusel

Marcel Robert Fierens

Antoine Roberta Van Rossen

A hardening developer is described which comprises at least one silver halide developing agent and a reaction product of a dialdehyde hardener with an aliphatic alcohol.

Hardening developers for silver halide photography

Sludge formation is reduced in the fixing and washing station of an automatic processing apparatus for rapid processing exposed photographic elements, by addition to the fixing and/or washing medium of a compound of the formula:

Processing of photographic silver halide material

An apparatus of small dimensions may be used to operate the water contained in the processing baths of automatic processing machines. The solid residue may be collected and sent to silver recovery plants, whereas the evaporated water serves to heat the drying station of the processing machine whereinafter it may be fed to the washing station. In so doing, a considerable amount of wash water is recovered and no chemical compounds are discharged to the sewer through which pollution of surface waters is practically eliminated.

Growing community of inventors

Mortsel, Belgium

Marcel Frans Aelterman