@inbook{61e2f5a16be24184b21a198ef46f9807,
title = "Acoustic monitoring",
abstract = "This chapter discusses the possibilities of monitoring the printhead operation without an additional measuring setup. With piezo inkjet, the actuator can also be used as a sensor during normal printhead operation. The acoustic signal detects variations in the drop formation process, the refill of the nozzle, wetting of the nozzle plate surface, disturbances from dirt particles, and the presence of air bubbles. Self-sensing also enables the active control of the driving waveform. The driving force to fire a droplet with a piezo inkjet printhead is generated by an actuator, which deforms the structure through the inverse piezoelectric effect. The variation in the amplitude of the acoustic signal is shown in this chapter, which is the most common example of a distortion. The acoustic measurement also enables feed-forward control of the driving waveform.",
author = "H.M.A. Wijshoff",
year = "2012",
doi = "10.1002/9783527647101.ch10",
language = "English",
isbn = "978-3527319046",
series = "Advanced Micro and Nano Systems",
publisher = "Wiley-VCH Verlag",
pages = "145--158",
editor = "J.G. Korvink and P.J. Smith and D.-Y. Shin and O. Brand and G.K. Fedder and Chr. Hierold and O. Tabata",
booktitle = "Inkjet-based micromanufacturing",
address = "Germany",
}