Generating color separation table for printer having color forming materials with high and low relative densities using a gamut boundary to limit use of dark color material
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United States of America Patent
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Jul 8, 2014
Grant Date -
Jun 6, 2013
app pub date -
Nov 13, 2012
filing date -
Dec 1, 2011
priority date (Note) -
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Abstract
To generate a color separation table for an image forming apparatus which has relatively dark/light color materials with high/low relative densities, a gamut boundary for limiting the use of the relatively dark color material is set. One of relatively dark color materials is selected, and at least a grid point which satisfies a condition that the color material value of the selected relatively dark color material is nonzero and a color value to be reproduced based on color material values set to the grid point exists in a region brighter than the gamut boundary is determined. The color material value of the selected relatively dark color material set to the grid point which satisfies the condition is replaced by the color material value of the relatively light color material.
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