Ink ejection device for forming high density dot image by successively ejecting two or more ink droplets

摘要

An ink ejection device that is capable of forming a high density dot image on a recording medium by successively ejecting two ink droplets. Drive timings of an actuator are appropriately set so that the two ink droplets do not join together during their flight times toward the recording medium. Because the ink ejection device moves relative to the recording medium, the two ink droplets deposited on the recording medium partially overlap one on the other, thereby enlarging an area where the ink is deposited.