Unless otherwise specified, the core density of a color separation film shall be at least 2,5 above the transmission density of the clear film (film base plus fog). The transmission density in the center of a clear half-tone dot shall not be more than 0,1 above the corresponding value of a large clear area. The transmission density of the clear film shall not be higher than 0,15.
The fringe width of a color separation film shall not be greater than 6
The color separation film quality should be evaluated according to Annex B of ISO 12647-1:2004.
Measurements shall be made with a (UV) transmission densitometer whose spectral products conform to ISO type 1 printing density as defined in ISO 5-3; for the evaluation of core properties, type 2 printing density may be used.