Paper Title:
Experimental Studies of Meniscus Dynamic Behaviors in a Squeeze-Mode Piezoelectric Inkjet Printhead
  Abstract

Meniscus dynamic behaviors, as well as its optimal waveform of driving signal, in a squeeze mode piezoelectric inkjet device are studied in this paper. To use the squeeze mode piezoelectric inkjet device as a drop-on-demand dispenser, the driving signal is trapezium waveform. The parameters in a trapezium waveform of the driving signal include rise time (trise), dwelling time (tdwell), fall time (tfall) and voltage (Vp). Among these parameters, the most important parameter of driving signal is the dwelling time. To demonstrate the importance of dwelling time, a LED signal synchronized with the driving signal is used to visualize the instantaneous meniscus shape under a microscope. Experimental results show the meniscus oscillation at beginning and droplet ejection at the later phase. It is found there is an optimal dwelling time. At the optimal dwelling time, droplet ejects in a minimum time and its ejection velocity reaches the maximum. The optimal dwelling time can be further identified it relates to a pressure wave oscillation within the device. The optimal dwelling time can be approximated as the length (L) of the piezoelectric inkjet device divide by the speed of sound (c) in the dispensed fluid.

  Info
Periodical
Edited by
Sheng-Jye Hwang and Sen-Yung Lee
Pages
155-162
DOI
10.4028/www.scientific.net/MSF.594.155
Citation
T. S. Leu, J. H. Lin, "Experimental Studies of Meniscus Dynamic Behaviors in a Squeeze-Mode Piezoelectric Inkjet Printhead", Materials Science Forum, Vol. 594, pp. 155-162, 2008
Online since
August 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sheng Dong Gao, Yang Wang, Yan Wu, Wen Bin Li
Chapter 5: Advanced Manufacturing Technology
Abstract:The generation of uniform droplets in the size of hundred microns was described in this paper. An experimental device capable of producing...
727
Authors: Sheng Dong Gao, Yang Wang, Yan Wu, Zhi Wei Liu
Chapter 5: Advanced Machining and Materials Processing Technology
Abstract:In this study an experimental device capable of producing uniform metal droplet stream with image gathering was set up. A periodic vibration...
1027
Authors: Song Yi Zhong, Le Hua Qi, Jun Luo, Yuan Xiao
Chapter 2: Manufacturing and Design Science
Abstract:Studying on the mechanism and device for high-melting-point metals droplets deposition technology are imperfect. In our research, a pneumatic...
781
Authors: Sheng Dong Gao, Yong Lu, Ying Xue Yao
Chapter 2: Anti-Fatigue Design Technologies and Materials
Abstract:Uniform molten metal droplet stream from jet break-up provides potential technology for metal parts rapid prototype manufacturing. In this...
195
Authors: Tao Chen, Ming Qiang Pan, Yang Jun Wang, Ji Zhu Liu, Li Guo Chen, Li Ning Sun
Chapter 1: Mechatronics and Control
Abstract:Due to its simple structure, low consumption of energy but strong driving forces, Electrowetting on Dielectric (EWOD) is used most frequently...
14