Patent ID: 8031372

Claim:
A method for processing image data for a color separation comprising: processing image values of the color separation with a first rendering process that corresponds to one printhead in a plurality of serially arranged printheads for printing the color separation, the first rendering process being one of a first error diffusion process, a first stochastic halftone screening process, and a first mapping process; processing the image values of the color separation with a second rendering process that differs from the first rendering process for at least one other printhead in the plurality of serially arranged printheads for printing the color separation, the second rendering process being one of a second error diffusion process, a halftone screening process, a second stochastic halftone screening process that is different than the first stochastic halftone screening process, and a second mapping process that is different than the first mapping process; generating firing signals for the one printhead from the rendered image values generated by the first rendering process; and generating firing signals for the at least one other printhead from the rendered image values generated by the second rendering process.