Liquid discharge apparatus and liquid discharge method

A liquid discharge apparatus including liquid discharge heads each having a liquid discharge unit for discharging droplet by plural colors, and including liquid discharge head control means for controlling the liquid discharge heads of respective colors to discharge droplets of respective colors from the liquid discharge units of respective colors onto recording medium surface to thereby carry out color image formation, wherein the liquid discharge heads of respective colors include plural ones of the liquid discharge units of respective colors in a direction perpendicular to movement direction of a recording medium where the recording medium is relatively moved with respect to the liquid discharge head;

• and
• wherein the liquid discharge head control means of respective colors serves to allow discharge timings of the droplets of respective colors in movement direction of the recording medium to be different in accordance with respective colors every one pixel in the movement direction of the recording medium, wherein discharge timings for ink ejection are shifted in the print feed direction only when a shift in nominal pixel generation is likely to result in conspicuous erroneous pattern, the discharge timing being shifted so that adjacent pixels in a print feed direction are caused to overlap thereby eliminating the potential for a visible line in the printed image, and further wherein recorded data is used by the control means in order to eliminate undesired stripes by altering discharge timings and further wherein dots of even pixels and dots of odd pixels are selectively connected based upon the recorded data in order to eliminate the undesired stripes.