| 摘要 |
PROBLEM TO BE SOLVED: To make poor ejection inconspicuous even if a partial liquid ejection part causes a defect such as nonejection. SOLUTION: The ejection direction of a droplet, which is ejected from each liquid ejection part, can be changed into a plurality of directions. Control is performed so that a pixel can be formed by ejecting the droplets in the respective different directions from at least the two different liquid ejection parts which are positioned in the vicinity of each other. Any one droplet arrival target position is determined from among a plurality of droplet arrival target positions in the arrival of the droplet in one pixel area, and the droplet is made to reach the determined droplet arrival target position, Thus, the control is performed so that the droplet arrival positions can be made different from one another each time the droplet is ejected. Additionally, when N droplets reach one pixel area so as to form one pixel, the control is performed so that the N droplets per cycle can be ejected from each liquid ejection part by sending out an ejection signal for the ejection of the N droplets per cycle to at least the two different liquid ejection parts positioned in the vicinity of each other, and any one droplet arrival position for each of the N droplets per cycle is determined from among the M different droplet arrival positions. COPYRIGHT: (C)2006,JPO&NCIPI |
