Research on the Jetting Visualization Process and Hydrokinetics of Ink Droplets in Inkjet Imaging System by CAE Technology

Abstract

Inkjet imaging technology is a typical replication technology, which uses the nozzle to eject the ink droplets on the substrates, and generates the needed color and density through the deposition of the slight droplets on the substrates, and makes the ink droplets form the stable image. In the inkjet imaging system, whether supplying uniform velocity ink droplets from nozzles is the key factor for forming uniform size ink droplets, it is related to the final imaging effects. This paper studied on the jetting visualization process and hydrokinetics of ink droplets based on the CAE (Computer Aided Engineering) technology and the advanced testing equipment. According to the analysis of turbulent flow characteristics and the other jetting flow dynamics factors of the ink droplets, a new type of equipment for inkjet was designed in this paper, including the structure of the transition pipe and nozzles. The shape of the equipment is rectangular, where the flow section is gradually tapered. The experiments and simulations showed that this new inkjet equipment could make the ink droplets distribute under the equal pressure and uniform velocity on the cross direction, and it directly reduced the dot gain phenomenon in the substrates, so it greatly improved the imaging effects in the inkjet imaging system.