Patent ID: 7508549
Filing Date: 2009-03-24
Classification: H04N

Abstract:
1. An apparatus for configuring image information for printing of an image having at least three different colors, comprising: a first halftone screen generator for generating information representing a first color separation image of the image by generating first halftone cells at a first predetermined halftone screen angle wherein pixels within the first halftone cell are oriented in a line structure with increasing cell density from first halftone cell to first halftone cell being identified by stronger line structures; a second halftone screen generator for generating information representing a second color separation image of the image by generating second halftone cells at a second predetermined halftone screen angle different from the first halftone screen angle and wherein pixels within the second halftone cell are represented in a line structure with increasing cell density from second halftone cell to second halftone cell being identified by stronger line structures, the line structures formed in the second halftone cells being at a different angle than the line structures formed in the first halftone cells; and a third halftone screen generator for generating information representing a third color separation image of the image by generating third halftone cells in accordance with a line structure dot growth pattern for each of the first halftone screen and second halftone screen of two different screen angles wherein pixels within a third halftone cell are represented by dots with increasing cell density from third halftone cell to third halftone cell being identified by stronger dot structures, the dot structures of the third halftone cells image being ordered along a series of parallel third lines and the series of parallel third lines being generated by a composite first halftone screen and second halftone screen that are formed of the first and second halftone cells.