The Color of Halttone Dot Patterns.

This paper attempts to demonstrate and explain the color changes noted when halftone dot patterns are superimposed in different ways. Prints have been pulled of process colors with the dots in exact register and exactly out of register at the same screen angle and the color differences analyzed. The effect on superimposed patterns, at conventional screen angles, of lateral and forward movement of the plate have been checked. The effect of printing colors, differing in value, at the same screen angle with regard to color changes and pattern effects has been investigated. All of these phenomena will be demonstrated through the use of large colored dot patterns and the color analysis will be described through the use of slides.