Compensating over-saturation due to dye-enriched colorant
AssigneeHewlett-Packard Development Company, L.P.
InventorsMaxime Rosello, Li Qian, Jaime Juan Munoz
Life of this patent
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Abstract
A method is described in which image data of an image to be printed is obtained wherein the image data includes data of each colorant to be printed. The image data of each colorant to be printed is analysed to detect areas of the image in which dye-enriched colorant will occur during printing. The image data is modified to compensate for over-saturation due to the dye-enriched colorant in the detected areas and the image is printed based on the modified image data.
Claims15
A method comprising:
- obtaining image data of an image to be printed, the image data specifying colorant to be output from nozzles of a printhead to print the image;
- analyzing the image data to detect areas of the image in which dye-enriched colorant will be output when printing the image as a result of colorant concentration at the nozzles of the printhead due to solvent evaporation at the nozzles;
- modifying the image data to compensate for over-saturation due to the dye-enriched colorant in the detected areas;
- and
- printing the image based on the modified image data, by causing the nozzles of the printhead to output the colorant specified by the modified image data.
A thermal inkjet printer comprising:
- a printhead comprising a plurality of nozzles;
- a processor;
- and
- a memory storing instructions executable by the processor to:
- analyze image data of an image to be printed, the image data specifying colorant to be output from the nozzles of the printhead to print the image;
- identify the nozzles from which dye-enriched colorant will be output when printing the image as a result of colorant concentration at the nozzles due to solvent evaporation at the nozzles;
- modify the image data to compensate dye-enrichment in the identified nozzles from which the dye-enriched will be output when printing the image;
- and
- a printer for printing the image based on the modified image data.
A non-transitory machine-readable storage medium encoded with instructions executable by a processor to perform processing comprising:
- analyzing image data of an image to be printed, the image data specifying colorant to be output from nozzles of a printhead to print the image;
- identifying an image region in which dye-enriched colorant will be output when printing the image as a result of colorant concentration at the nozzles of the printhead due to solvent evaporation at the nozzles;
- modifying the image data to compensate for over-saturation due to the dye-enriched colorant in the identified image region;
- and
- using the modified image data to print the image.
Dependencies are inferred from the claim text.