Color Gamut Analysis of Frequency Modulated Screen Reproduction

A gamut's size and shape may depend on many factors other than the physical properties of its primary colorants. The color gamut created by certain types of frequency modulated (FM) screening technologies appears to be larger than those created by conventional halftone (AM) screens while using the same colorants. Most device gamuts are determined by the physical properties of the substrate and inks. This paper describes and tests gamut-determining factors when physical properties remain unchanged Ð based on the screens alone. Color gamut mapping of FM device space is common, and much analysis is available about the factors contributing to an AM/CMYK device-gamut. It is the intent of this paper to provide an analysis of a FM/CMYK device-gamut, compare the gamuts resulting from FM and AM screen performance alone, and to suggest directions of further research.