Toner printing with increased gamut
AssigneeEastman Kodak Company
InventorsChung-Hui Kuo, Dinesh Tyagi
Life of this patent
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Abstract
Methods are provided for determining toner colors to be combined to form a target color at a location on a receiver. In one aspect, a method includes determining a fluorescent toner color to be provided at the location based upon the density and hue angle of the target color; determining one or more reflective toner colors to be provided with the determined fluorescent toner color at the location to form the target color and the amount of the fluorescent toner color is decreased as the target color density increases.
Claims14
A method for determining toner colors to be combined to form a target color at a location on a receiver, the method comprising:
- determining a fluorescent toner color to be provided at the location based upon the density and hue angle of the target color;
- determining one or more reflective toner colors to be provided with the determined fluorescent toner color at the location to form the target color;
- and,
- wherein an amount of the fluorescent toner color is decreased as the target color density increases, and wherein at least one of the one or more reflective toner colors is determined at least in part to combine with the fluorescent toner color to cause the location to have a target color with a density that is within a predetermined range of densities.
A method for determining toner color images, the method comprising:
- obtaining image data and printing instructions for printing the image data;
- determining a pattern of target colors based upon the image data and the printing instructions and a color gamut that can be formed using a predetermined combination of reflective toner colors;
- generating a fluorescent toner color image to increase the dynamic range;
- generating a plurality of reflective toner color images for printing in register with the fluorescent toner image to form the pattern of target colors;
- and,
- wherein an amount of fluorescent toner color in the fluorescent toner image decreases with increases in a density of the target color, and wherein the amount of fluorescent toner colorant in a printed toner image increases with increases in density at a hue angle of the fluorescent toner color until a threshold amount of the fluorescent toner color is met, and for density increases above the threshold density the amount of the fluorescent toner colorant is decreased as the target color density increases.
Dependencies are inferred from the claim text.