Patent ID: 9028032
Filing Date: 2015-05-12
Classification: B41J

Abstract:
1. A printing apparatus, which executes printing by reciprocally scanning a carriage, to which a printhead having a first nozzle array in which a plurality of nozzles are arrayed in a first direction and a second nozzle array in which a plurality of nozzles are arrayed in the first direction is mounted, in a second direction intersecting with the first direction, comprising: a first print unit configured to print a first adjustment pattern on a print medium using the first nozzle array and the second nozzle array of the printhead; a first obtaining unit configured to (i) obtain print positions of two patches of a plurality of patches that form the first adjustment pattern by optically reading the first adjustment pattern and (ii) calculate a distance between the print positions; a first acquisition unit configured to acquire a first registration adjustment value based on the calculated distance; a second print unit configured to print, on a print medium, a second adjustment pattern different from the first adjustment pattern using the first nozzle array and the second nozzle array of the printhead in a state in which a registration of the printhead is adjusted by the first registration adjustment value; a second obtaining unit configured to obtain densities of a plurality of patches that form the second adjustment pattern by optically reading the second adjustment pattern; and a second acquisition unit configured to acquire a second registration adjustment value based on the obtained densities.