Method of printing with multiple sized drop ejectors on a single printhead

A method of printing by firing drop ejectors to eject droplets of ink onto a printing substrate with a printhead having a plurality of drop ejectors with different sizes, comprising the steps of:

• tilting the printhead from vertical with respect to the scanning direction;
• firing a first size drop ejector in one printing pass;
• and
• firing a second size drop ejector in a second printing pass so that the ejected droplets form spots having different diameters that are offset in the direction perpendicular to the scanning direction.

A method of printing ink spots on a printing medium using at least two different size nozzles in a printhead array including a plurality of longitudinally extending channels, each channel having a central longitudinal axis and an end forming a nozzle for ejecting ink drops, wherein each nozzle is offset from the longitudinal axis of the associated channel and adjacent nozzles are spaced apart in opposing sides of the adjacent channels to achieve maximum spacing between adjacent nozzles on one side and minimum spacing between nozzles on another side, the steps comprising the steps of:

• firing one size nozzle in one printing pass;
• advancing the printing medium an odd number of pixels;
• and
• firing another size nozzle in another printing pass, wherein the different size nozzles are fired in a staggered fashion so that one size spot is displaced ½ pixel in both directions relative to the other size spot.