Numerical Study of Inkjet Technology

Abstract

This paper offers an overview of studies of RICOH Collaborative Research Program on Advanced Digital Printing Technology at Institute of Science Tokyo. The Program started in 2019 and we are engaged in studying inkjet technology. Inkjet printer generates images with many droplets ejected from nozzles. The process is very simple, but it is difficult to understand phenomena without theoretical consideration and simulation. We have been struggling with these phenomena (ejection, deposition, evaporation, and penetration), and have reported our studies at conferences and journals ; mainly of the Imaging Society of Japan. These researches : ejection of non-Newton fluid, droplet-coalescence, image formation, deposition on CFRP (carbon fiber reinforced plastics) film and nozzle evaporation, will be introduced in this paper.