Patent ID: 7027191
Filing Date: 2006-04-11
Classification: B41M,G03F,H04N

Abstract:
1. A process for color printing an image with angled half tone screens and a colorant set that includes Cyan, Magenta, Yellow and Black colorants and at least one other colorant comprising: choosing the at least one other colorant so that one of the at least one other colorant is a colorant having a hue angle intermediate the hue angles of Cyan and Magenta; assigning a screen angle to each of the colorants in the colorant set: providing an angled half tone screen for each of the colorants of the colorant set responsive to a color separation of the image; and using the angled half tone screens to produce a color printing of the Image, wherein the number of colorants in the colorant set is odd and assigning a screen angle to each of the colorants of the colorant set comprises assigning black a first screen angle, assigning one half of said non-black colorants a second screen angle and one half of said non-black colorants a third screen angle, wherein said first, second and third screen angles are different and wherein non-black colorants having adjacent hue angles are assigned different screen angles.