Simulation of Fluid Dynamics Caused in Kyser Type Ink-jet Head

Abstract

This paper deals with fluid dynamics caused in Kyser type ink jet head. The system of the ink jet head fundamentally consists of an ink-reservoir, pipe line elements, a ink-chamber and a nozzle. In order to execute a simulation analysis of dynamic performance of the system, we construct a mathematical model of the system. As a mathematical model for the pipe line elements, we adopt a modal model which was proposed by the authors for simulating transient response of hydraulic transmission lines in high accuracy. A main interest of this study is, therefore, to investigate applicability of the modal model into a miniature pipe lines such as used in ink-jet head. In the simulation, pressure responses caused in the ink chamber are calculated. The results are compared with the measured responses to confirm the validity of the simulation analysis.