In Staccato screening very small dots are arranged in a random pattern. Dark tones are rendered with more dots and light tones with fewer dots – hence the term Frequency Modulated (quantity controlled) screen, or FM screen.
Random distribution of the dots eliminates patterns and the rosettes that characterize AM screens.
The microdot structure leads to real photographic quality print and means very fine details can be reproduced with ease. Staccato screens are truly amazing when fine details, smooth tints or small text needs to be reproduced.