Patent ID: 8511775
Filing Date: 2013-08-20
Classification: B41J,G06K,H04N

Abstract:
1. A print head comprising: three nozzle rows in which a plurality of nozzles are arrayed in a sub-scanning direction, the nozzle rows being spaced apart in a main scanning direction; wherein in two nozzle rows among the three nozzle rows, the positions of the nozzles in the sub-scanning direction are mutually the same; in one nozzle row among the three nozzle rows, the positions of the nozzles in the sub-scanning direction lie between nozzles of the two nozzle rows in the sub-scanning direction; a head-moving section for causing the print head to move relative to a printing medium in the main scanning direction and in the sub-scanning direction; and a controller for controlling the movement of the print head performed by the head-moving section, and ejection of ink from the nozzles, the print head being provided with three or more nozzle rows in which a plurality of nozzles for ejecting ink of the same hue are arrayed in the sub-scanning direction, the nozzle rows being spaced apart in the main scanning direction; the controller carrying out the control such that at least some raster lines which form a printed image include ink dots formed by ink ejected from two nozzles of mutually the same position in the sub-scanning direction and respectively belonging to the two nozzle rows the three nozzle rows can eject ink of the same hue.