Patent ID: 7503635
Filing Date: 2009-03-17
Classification: B41J,G06K

Abstract:
1. An ink jet printing method for carrying out multi-scans printing to complete an image to be printed in a unit region on a print medium by a plurality of scans of a print head relative to the unit region, the print head capable of ejecting at least a first achromatic color ink and a second achromatic color ink, comprising the steps of: determining whether to carry out the multi-scans printing in a color mode or in a monochrome black mode; and setting mask patterns used for carrying out the multi-scans printing according to a result determined in said determining step, wherein if it is determined that the multi-scans printing is carried out in the color mode in said determining step, the same mask patterns are set for the first and second achromatic color inks in said setting step, and if it is determined that the multi-scans printing is carried out in the monochrome black mode in said determining step, a plurality of different mask patterns are set for the first and second achromatic color inks in said setting step.