Improving the performance of a shear-type piezo printhead

Alfred Zollner; Peter Moestl

doi:10.1117/12.266340

7 February 1997 Improving the performance of a shear-type piezo printhead

Alfred Zollner, Peter Moestl

Proceedings Volume 2949, Imaging Sciences and Display Technologies; (1997) https://doi.org/10.1117/12.266340
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

Abstract

For portable printers low energy consumption of the printhead is important. Because of their high efficiency shear-type piezo printheads are the best choice. However, when scaling down the dimensions the effects of crosstalk between two adjacent channels become increasingly visible. In order to study the interaction of different channels a simple linear model was developed. The model includes the mechanical characteristics of the actuators and some general coupling elements between the actuators. Due to the simplicity of the model a 360 dots per inch printhead with 64 nozzles could be simulated as a whole. A set of parameters was determined from crosstalk measurements so that the output values of the model fitted the measured values. The results are in good agreement with the measurements. The model was helpful in finding a means to compensate pattern-dependent velocity deviations by adjusting the control pulse, allowing the complete elimination of crosstalk effects. With a second pulse parameter the refill time of a channel was minimized for all patterns. Hence the firing frequency of the printhead was increased to 8 kHz. The velocity deviations due to crosstalk are less than 5%.

Citation Download Citation

Alfred Zollner and Peter Moestl "Improving the performance of a shear-type piezo printhead", Proc. SPIE 2949, Imaging Sciences and Display Technologies, (7 February 1997); https://doi.org/10.1117/12.266340

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