Patent ID: 7252364
Filing Date: 2007-08-07
Classification: B41J

Abstract:
1. An inkjet printing apparatus for printing by scanning an inkjet printhead for discharging ink and a printing medium relative to each other, wherein said printhead comprises a first nozzle group used to print a dot having a first density, and a second nozzle group used to print a dot having a second density, and also has a plurality of nozzle groups, and the inkjet printing apparatus has a first printing mode in which only one of said first and second nozzle groups is used during one printing scan, and a second printing mode in which said first and second nozzle groups are driven at different timings during one printing scan, and wherein the inkjet printing apparatus comprises printing position setting means for determining set values of relative printing positions of said plurality of nozzle rows in the second printing mode, on the basis of set values of relative printing positions specified from a pattern for adjusting relative printing positions of said plurality of nozzle rows in the first printing mode.