28-03-2013 дата публикации
Номер: US20130076825A1
Принадлежит:
A method of printing a high density image. An image is accessed, wherein the image has a plurality of pixels, and each pixel has an r,g,b value. For each pixel, each r,g,b value is separated into separate grayscale components and color components. A lookup table is applied to each grayscale and color component to generate an ink value for each of the print heads. The ink values are combined to produce a final ink output value for each pixel, and the final ink output values are employed for printing on medium using an ink-jet printer. 1. A method for printing on medium using an ink-jet printer having a plurality of print heads , comprising:accessing an image having a plurality of pixels, each pixel having an r,g,b value;for each pixel, separating each r,g,b value into separate grayscale components and color components;applying a lookup table to each grayscale and color component to generate an ink value for each of the print heads;combining the ink values to produce a final ink output value for each pixel; andemploying the final ink output values for printing on medium using the ink-jet printer.2. The method of claim 1 , wherein the ink-jet printer includes 10 print heads (K claim 1 ,Light K claim 1 ,LLK claim 1 ,C claim 1 ,Lc claim 1 ,M claim 1 ,Lm claim 1 ,Y claim 1 ,O claim 1 ,G) claim 1 , the grayscale and color components are R claim 1 ,G claim 1 ,B claim 1 ,C claim 1 ,M claim 1 ,Y claim 1 ,K claim 1 , and the final ink output value for each pixel for each of the print heads is determined by the formulas:{'br': None, 'K=Grayscale K'}{'br': None, 'Light K=Grayscale LK'}{'br': None, 'LLK=Grayscale LLK'}{'br': None, 'C→Grayscale_C+255−(G_C+255−(M_C+255−(B_C+(255−C_C))))'}{'br': None, 'Lc→Grayscale Lc+255−(G_Lc+255−(B_Lc+255−(C_Lc+255−(M_Lc+(255−Y_Lc)))'}{'br': None, 'M→Grayscale_M+255−(R_M+255−(B_M+(255−M_M)))'}{'br': None, 'Lm→Grayscale_Lm+255−(R_Lm+255−(B_Lm+(255−M_Lm)))'}{'br': None, 'Y→Y_Y+255−(C_Y+255−(G_Y+(255−R_Y)))'}{'br': None, 'sub': '—O', 'O→R'}{'br': ...
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