![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
The topic of this paper is the evaluation of the dark stability of different types of photographic reversal colour film.
Agfa, Fuji, Ilford and Kodak films have been subjected to accelerated ageing in the dark. The relative humidity was fixed at 50% and temperatures were selected in a range from 57°C to 92°C. Deterioration was monitored by optical density measurement of the least stable dye on neutral grey or colour sensitometric strips. Extrapolation according to the Arrhenius Law allowed us to evaluate the stability of the films at 24°C.