Benday-dots explained

Coarse

Medium

Fine

The Benday Dot printing process combines two (or more) different small, coloured dots to create a third colour. The process was named after US illustrator and printer Benjamin Day

Depending on the effect required, colour and dots may be separate or overlapping. 1950s and 1960s pulp comic books used Benday dots to inexpensively create shading from spot colours.