Patent ID: 6704610
Filing Date: 2004-03-09
Classification: D06B

Abstract:
A process for generating, in pixel-wise fashion on a desired absorbent substrate, a reproduction of a desired pattern comprised of a plurality of target colors, said reproduction being formed by the pixel-wise application of a limited number of individual liquid coloring agents to said substrate, each agent having a color that may be distinct from any of said target colors, said process comprising the steps of:a. determining values for selected physical characteristics of said absorbent substrate that determine color reflectivity; b. determining the color component values of each of said individual liquid coloring agents on said substrate; c. generating the relative concentration values of all appropriate blends of said individual liquid coloring agents formed by the application of a plurality of different liquid coloring agents to the same pixel on said substrate; d. mathematically predicting and generating a comprehensive color palette comprised of color component values of all of said individual liquid coloring agents and all appropriate blends of said liquid coloring agents, as said agents and said blends of agents would appear on a substrate having said selected physical characteristic values of said absorbent substrate; e. determining the color component values of said target colors; f. comparing the color component values of said target colors with the color component values of said comprehensive color palette; and g. at the location of each pixel in said reproduction, selecting from said palette a color that, when said pixel is viewed together with adjoining pixels in said reproduction at a distance at which individual pixels are unresolved by the eye, will visually approximate the target color associated with a corresponding pixel location in said desired pattern when said desired pattern is viewed at a distance at which individual pixels are unresolved by the eye.