Patent ID: 8622501
Filing Date: 2014-01-07
Classification: B41J

Abstract:
1. An inkjet printer comprising: a printing unit capable of ejecting inks of different colors to print an image on a unit area of a printing medium, by moving the printing unit in predetermined backward and forward scanning directions over the unit area, on a basis of printing data specifying ejection or non-ejection of the inks; a printing data generation unit that generates the printing data corresponding to each of the inks on a basis of unit image data corresponding to each of the inks, having a value representing an amount of ink, corresponding to an image to be formed on the unit area; and a determination unit that determines a color unevenness occurrence value relating to a degree of occurrence of color unevenness on the basis of i) the values of the unit image data corresponding to each of the inks and ii) predetermined weightings for each of the inks, wherein if the color unevenness occurrence value is less than a threshold value, the printing data generation unit enables a dot to be formed in the unit area by a forward scan and a backward scan of the printing unit, whereas if the color unevenness occurrence value is more than the threshold value, the printing data generation unit enables a dot to be formed in the unit area only by one of the forward scan and the backward scan of the printing unit.