Flows on the nozzle plate of an inkjet printhead |
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| Authors: | Bart Beulen Jos de Jong Hans Reinten Marc van den Berg Herman Wijshoff Rini van Dongen |
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| Institution: | (1) Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(2) Physics of Fluids group, Faculty of Science and Technology and Burgers Center of Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands;(3) Océ Technologies B.V., P.O. Box 101, 5900 MA Venlo, The Netherlands |
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| Abstract: | Flow patterns of ink layers on the nozzle plate of a piezo-driven printhead are investigated. Two different flow types are
identified. First, a jet of droplets induces a radial airflow in the direction of the jet, which in turn causes a liquid flow
towards the nozzle. Second, the movement of the meniscus in the nozzle causes an equally strong flow, but completely different
flow patterns. The results are presented in a phase diagram with pulse amplitude and firing frequency as parameters. |
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