This International Standard specifies the method for measuring densities of first generation silver-gelatin microforms. It also lays down the values of densities to be used according to the documents reproduced and the operating means.
It applies to source document negative-appearing microforms only.
It applies neither to microforms for technical drawings which are dealt with in ISO 3272-2, nor to diazo and vesicular films which are the subject of ISO 8126, nor to COM microforms which are dealt with in ISO 8514.
SIS SS-ISO 6200:1991 history
1991SIS SS-ISO 6200:1991 Micrographics — First generation silver- gelatin microforms of source documents — Density specifications