Print masks for multiple pass print modes

摘要

Print masks for multiple pass print modes are described herein. In at least some examples herein, the print mask includes mask matrices. The mask matrices define a single nozzle actuation pattern. The nozzle actuation pattern is irregular. In at least some examples herein, techniques for printing of an image on a substrate are described. During printing the image on the substrate a print mask is applied such that, for each pass, the inkjet nozzles in the print head are actuated according to the single nozzle actuation pattern.

主权项

1. A method for generating a print mask for an inkjet printer in multiple P pass print mode, the printer including at least one printhead having a plurality N of inkjet nozzles or inkjet nozzles sub-groups, the method comprising generating a mask matrix for each pass of P passes of the multiple P pass print mode, each respective mask matrix of the mask matrices defining a single nozzle actuation pattern, the nozzle actuation pattern being irregular, wherein generating a given mask matrix of the mask matrices comprises:
dividing the given mask matrix into P nozzle groups, each nozzle group of the P nozzle groups sized N/P, filling a first nozzle group of the P nozzle groups with codes, each code of the codes representing a pass number in which a corresponding inkjet nozzle or inkjet nozzles sub-group is to be actuated, and filling a second nozzle group of the P nozzle groups with codes that are derived from and different from the codes in the first nozzle group.