Abstract
In the current consumer market of the inkjet printer, there are the needs of higher print and/or higher resolution. Inkjet head needs the performance of the higher frequency jetting. The jetting velocity is constant in the fixed jetting frequency, but is different in low frequency and high frequency. In the real printing, the jetting interval is irregular. Therefore, the cause of the worse print quality is landing ink on the miss position by the inconstant jetting velocity. So far, the residual vibration after jetting and the ink meniscus which is not the initial state change the jetting velocity in the various jetting interval. But, these detailed principles are unclear. In this paper, we analyzed the jetting velocity fluctuation on the jetting interval the jetting ink behavior. The jetting velocity of 1 drop increased on short jetting interval by residual vibration. The jetting velocity of 2 and 3 drops decreased on short jetting interval by the ink left on the nozzle. Then, we found that the cause of jetting velocity fluctuation is the different single drop and multi drops.
