Patent ID: 6390598
Filing Date: 2002-05-21
Classification: B41J,G06K

Abstract:
A method of printing by forming ink dots on a print medium, comprising the steps of:(a) providing a print head having a plurality of nozzles arrayed along a sub-scanning direction for ejecting same ink; (b) allocating n(j) number of nozzles to a j-th main scan line in a selected area on the print medium where n(j) is an integer of two or more, the integer n(j) for some main scan lines being set at a different value from that for other main scan lines; (c) positioning each of the n(j) number of nozzles on the j-th main scan line; and (d) driving each of the n(j) number of nozzles, in response to given print data, to enable the nozzle to form dots intermittently at a rate of one in mÃ—q dot positions on the j-th main scan line during one main scan, m being an integer of 1 or more, and q being an integer of 2 or more, to thereby complete dot formation on the j-th main scan line with the n(j) number of nozzles during n(j) number of main scans.