Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity

Jos de Jong; Roger Jeurissen; Huub Borel; Marc van den Berg; Herman Wijshoff; Hans Reinten; Michel Versluis; Andrea Prosperetti; Detlef Lohse

doi:10.1063/1.2397015

Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity

Jos de Jong, Roger Jeurissen, Huub Borel, Marc van den Berg, Herman Wijshoff, Hans Reinten, Michel Versluis, Andrea Prosperetti, Detlef Lohse

Research output: Contribution to journal › Article › Academic › peer-review

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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 μm before it sharply drops to zero around R0 = 19 μm. A simple one-dimensional model is introduced to describe this counterintuitive behavior which turns out to be a resonance effect of the entrained bubble.

Original language	English
Article number	121511
Number of pages	7
Journal	Physics of fluids
Volume	18
Issue number	12
DOIs	https://doi.org/10.1063/1.2397015
Publication status	Published - 2006

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title = "Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity",

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 μm before it sharply drops to zero around R0 = 19 μm. A simple one-dimensional model is introduced to describe this counterintuitive behavior which turns out to be a resonance effect of the entrained bubble.",

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AU - van den Berg, Marc

AU - Wijshoff, Herman

AU - Reinten, Hans

AU - Versluis, Michel

AU - Prosperetti, Andrea

AU - Lohse, Detlef

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AB - 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 μm before it sharply drops to zero around R0 = 19 μm. A simple one-dimensional model is introduced to describe this counterintuitive behavior which turns out to be a resonance effect of the entrained bubble.

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Entrapped air bubbles in piezo-driven inkjet printing: Their effect on the droplet velocity

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