Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity
Date
12/8/2006
Journal Title
Journal ISSN
Volume Title
Publisher
The Physics of Fluids
Abstract
Air bubbles entrapped in the ink channel are a major problem in piezo-driven inkjet printing. They grow by rectified diffusion and eventually counteract the pressure buildup at the nozzle, leading to a breakdown of the jetting process. Experimental results on the droplet velocity udrop as a function of the equilibrium radius R0 of the entrained bubble are presented. Surprisingly, udrop(R0) shows a pronounced maximum around R0=17?m before it sharply drops to zero around R0=19?m. A simple one-dimensional model is introduced to describe this counterintuitive behavior which turns out to be a resonance effect of the entrained bubble.
Description
Keywords
Bubble model, Liquids, Bubble dynamics, Friction, Frequency measurement, Transition metals
Citation
Copyright 2006 Physics of Fluids. Recommended citations: de Jong, Jos, Roger Jeurissen, Huub Borel, Marc van den Berg, Herman Wijshoff, Hans Reinten, Michel Versluis, Andrea Prosperetti, and Detlef Lohse. "Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity." Physics of fluids 18, no. 12 (2006): 121511. DOI: 10.1063/1.2397015 URL: https://aip.scitation.org/doi/abs/10.1063/1.2397015 Reproduced in accordance with the original publisher’s licensing terms and with permission from the author(s).