Patent ID: 7258409
Filing Date: 2007-08-21
Classification: B41J

Abstract:
1. An inkjet printing apparatus, having a carriage incorporating an inkjet printhead where nozzles for discharging ink are arranged in a predetermined direction, for performing printing by scanning the carriage with respect to a printing medium in a direction orthogonal to the predetermined direction, comprising: first and second conveyance means, arranged at an upstream side and a downstream side, respectively, with respect to a printing-medium conveyance direction of an area of the printing medium scanned by the printhead, for conveying the printing medium while holding the printing medium; and nozzle setting means for, when the printing medium is held only by said second conveyance means, setting nozzles to be used for printing by selecting from the nozzles of the printhead arranged at the downstream side in the printing-medium conveyance direction, in accordance with a position of the printing medium in the printing-medium conveyance direction, wherein said nozzle setting means, when printing a rear side of the printing medium, changes the nozzles to be used for printing at each scan of the printhead, and during the plural times of scanning, nozzles to be used for printing are changed, instead of conveying the printing medium by at least one of said first and second conveyance means.