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The Effects of Driving Waveform for Piezoelectric Drop On Demand Industrial Inkjet Head  

Kim Young-Jae (삼성전기 중앙연구소)
Yoo Young-Seuck (삼성전기 중앙연구소)
Sim Won-Chul (삼성전기 중앙연구소)
Park Chang-Sung (삼성전기 중앙연구소)
Joung Jae-Woo (삼성전기 중앙연구소)
Oh Yong-Soo (삼성전기 중앙연구소)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.55, no.8, 2006 , pp. 417-422 More about this Journal
Abstract
This paper presents the effect of driving waveform for piezoelectric bend mode inkjet printhead with optimized mechanical design. Experimental and theoretical studies on the applied driving waveform versus jetting characteristics were performed. The inkjet head has been designed to maximize the droplet velocity, minimize voltage response of the actuator and optimize the firing frequency to eject ink droplet. The head design was carried out by using mechanical simulation. The printhead has been fabricated with Si(100) and SOI wafers by MEMS process and silicon direct bonding method. To investigate how performance of the piezoelectric ceramic actuator influences on droplet diameter and droplet velocity, the method of stroboscopy was used. Also we observed the movement characteristics of PZT actuator with LDV(Laser Doppler Vibrometer) system, oscilloscope and dynamic signal analyzer. Missing nozzles caused by bubbles in chamber were monitored by their resonance frequency. Using the water based ink of viscosity of 4.8 cps and surface tension of 0.025 N/m, it is possible to eject stable droplets up to 20 kHz, 4.4 m/s and above 8 pl at the different applied driving waveforms.
Keywords
Inkjet; Piezoelectric; MEMS; Waveform; Droplet;
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  • Reference
1 A. Papoulis, Probability. Random Variables, and Stochastic Processes. 3rd Edition, New York: McGraw-Hill, 1991
2 J. Monteiro, S. Devadas, and B. Lin, 'A Methodology for Efficient Estimation of Switching Activity in Sequential Logic Circuits,' ACM/IEEE Design Automation Conf., pp. 12-17. 1994   DOI
3 R. Burch. F. N. Nairn, P. Yang, and T. N. Trick, 'A Monte Carlo Approach for Power Estimation.' IEEE Trans. on VLSI systems. vol. 1. No.1. pp.63-71, March 1993   DOI   ScienceOn
4 F.N. Najm, 'A Survey of Power Estimation Techniques in VLSI Circuits,' IEEE Trans. on VLSI Systems, pp, 446-455, Dec. 1994   DOI   ScienceOn
5 A. Ghosh, S. Devadas, K. Keutzer and J. White, 'Estimation of A verage Switching Activity in Combinational and Sequential Circuits,' ACM/IEE Design Automation Conf., pp, 253-259, 1992   DOI