Patent ID: 6960036

Claim:
A print position adjusting method for a printing apparatus, wherein the printing apparatus uses a print head having an array of a plurality of print elements and forms an image on a print medium by scanning the print head in a direction different from an arranging direction of the plurality of print elements and wherein rasters making up the image are divided into at least two raster groups according to a driving mode of the plurality of print elements, an image corresponding to a plurality of rasters is printed by a plurality of print elements according to scanning of the print head and a single raster can be printed by a scan of the print head using one print element, said method for adjusting print positions by the plurality of print elements between the at least two raster groups, said method comprising the steps of: forming a plurality of adjustment patterns by the print head, in a manner that a print element drive timing between the at least two raster groups is shifted a predetermined interval, the print element drive timing being a timing of driving the plurality of print elements; entering an adjustment value for the print element drive timing between the at least two raster groups, the adjustment value being determined from the plurality of adjustment patterns; and storing the entered adjustment value.