| Wed October 9th 2013 16:00 ZH286 | Seminar | Basics of inkjet printer design Frits Dijksman |
Details:Inkjet print heads are composed out of many small sized valveless pumps. Droplets are produced by pulse wise actuation, e.g. by an piezo element or a heater.Pulse wise actuation causes sound waves, and these sound waves upon arriving at a nozzle are transferred into fluid velocity and finally into droplets. The acoustics of a single nozzle print head can be understood by considering it as a Helmholtz resonator. This approach can be easily extended to multi-nozzle print heads. In the presentation the theory will be outlined and the fluidic cross-talk in multi-nozzle print heads explained. | ||
