Patent ID: 6702415
Filing Date: 2004-03-09
Classification: B41J

Abstract:
An ink-jet printing method of discharging ink to each pixel on a printing medium while performing main scanning operation of an ink-jet printhead for discharging ink relative to the printing medium, and performing gray level printing by landing the number of ink dots corresponding to a gray level value on each pixel, comprising:the printing step of printing pixels belonging to a first gray level value group corresponding to at least the lowest and second lowest gray level values, of a plurality of gray level values from which a gray level value with which the dot is not printed is excluded, such that dot landing positions or dot barycenters in the pixels become the same, and printing pixels belonging to a second gray level value group corresponding to a gray level value higher than that of the first gray level value group such that dot landing positions in the pixels become not less than two positions.