Patent ID: 8585169
Filing Date: 2013-11-19
Classification: B41J,G06K,H04N

Abstract:
1. An apparatus for printing on a print medium as said print medium advances along a selected path, said apparatus comprising: a print material delivery assembly including at least one print device with each print device having at least one nozzle, said print material delivery assembly disposed to deposit droplets of a print material on at least a portion of said print medium a plurality of times; and a print firing controller to generate a print firing signal for each, and coupled to, said at least one nozzle to selectively deposit said droplets onto said print medium utilizing correction factors to modify the number of droplets to be fired from a corresponding printhead at least one nozzle to achieve the desired density of said droplets using substantially uncorrelated halftone masks to independently adjust each print firing signal as each droplet is deposited on a same nominal position of said print medium, the halftone masks being substantially uncorrelated so that the halftone masks are different from each other.