Patent ID: 6508537
Filing Date: 2003-01-21
Classification: B41J

Abstract:
An ink jet recording device comprising:a plurality of head modules assembled side by side in a widthwise direction for forming dot groups on a recording medium, the dot groups being aligned in the widthwise direction to form a complete image, each of the plurality of head modules being formed with a nozzle line extending in a line direction, the nozzle line including a plurality of nozzles through which ink droplets are ejected to form the corresponding dot group by forming corresponding dots on the recording medium; a moving mechanism that moves the recording medium relative to the plurality of head modules in a moving direction at an angle &thgr; with respect to the line direction, the moving direction being perpendicular to the widthwise direction, wherein a plurality of first scanning lines extending in the moving direction are defined on the recording medium; ejection means for selectively ejecting ink droplets from the plurality of nozzles in an ejection direction at an ejection timing; deflection means for deflecting the ejection direction of the ink droplets toward a deflection direction perpendicular to the line direction by one of predetermined deflection amounts; and correcting means for correcting positional error of the dot groups, the correcting means including first control means for controlling the predetermined deflection amounts so as to form the dots on the first scanning lines and second control means for controlling the ejection timing so as to adjust positions of the dots with respect to the moving direction.