MULTI FREQUENCY SCREEN

摘要

A half-tone screen in which a substantially transparent substrate has a plurality of opaque regions disposed thereon. The opaque regions are arranged in at least a high frequency repetitive pattern and a low frequency repetitive pattern. This of screen may be employed to modulate the light image of a color transparency being reproduced by an electrophotographic printing machine. The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to be limiting as to the scope of the invention in any way.