Discolouration of architectural photoreproductions :...

Notas: Resumen: When applied to architectural drawings, the term photoreproduction means a copy from the original drawing that was produced using a process similar to the photographic process. In architectural archives, these prints, especially diazotype prints, are conservation staff´s main preservation concern. Diazotype reproductions usually show a reddish pink to orange discolouration. The results of this study show that this phenomenon is caused by the coupling agent used in the diazo process.
Texto en inglés con resúmenes en inglés, francés y alemán