Method for colour correction by dry dot etching using photographically produced mask.

摘要

A method for dot-size correction or modification in half-tone colour separations to be used in the production of printing plates for printing reproductions of coloured originals. According to this method an overexposed contact print is made through a photographic mask by means of which certain area are isolated in addition to a normal exposure for obtaining an exact copy. The mask is evaluated on a monitor before being produced photographically.