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US 2006/0066656 A1Published application
Method for reducing dot placement errors in imaging apparatus
OwnerColin Maherinventor
Life of this patent
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Abstract
A method for reducing dot placement errors in an imaging apparatus includes printing with a printhead having a plurality of nozzles a plurality of printhead alignment patterns, each printhead alignment pattern being printed at a different predefined printhead firing frequency of a plurality of printhead firing frequencies; and determining a set of printhead specific compensation values for each of the plurality of printhead firing frequencies for use in printhead alignment.
Claims24
A method for reducing dot placement errors in an imaging apparatus, comprising:
- printing with a printhead having a plurality of nozzles a plurality of printhead alignment patterns, each printhead alignment pattern being printed at a different predefined printhead firing frequency of a plurality of printhead firing frequencies;
- and
- determining a set of printhead specific compensation values for each of said plurality of printhead firing frequencies for use in printhead alignment.
A method for reducing dot placement errors in an imaging apparatus, comprising:
- providing a set of printhead specific compensation values for a printhead having a plurality of nozzles, each printhead specific compensation value in said set being associated with a respective printhead firing frequency of a plurality of printhead firing frequencies;
- and
- selecting a printhead specific compensation value from said set of printhead specific compensation values corresponding to a firing frequency associated with printing an image with said imaging apparatus to effect printhead alignment at said firing frequency associated with printing said image.
Dependencies are inferred from the claim text.