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Volume: 24 | Article ID: art00031_1
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Optimization of a DoD Print Head Signal for the Ink-Jetting of Conductive Circuits
Dominik Cibis
Klaus Krüger
  DOI :  10.2352/ISSN.2169-4451.2008.24.1.art00031_1  Published Online :  January 2008
Abstract

The inkjet-printing principle is becoming more and more important for electronical applications. Printing conductive circuits is possible with colloidal inks so far, but stability of the printing process is not guaranteed at all times.The piezo activation signal, meaning its shape, strength and duration influences the droplet formation process and printing stability enormously. The droplets' velocity and volume can vary from 1 to 6 m/s and 100 to 300 pL respectively for a 100 μm nozzle print head. Small droplets are desired for highest resolution, but they depend on the piezo activation signal u(t). Furthermore, the stability of the printing process is influenced by the energy provided to the droplet.By means of a frequency response analysis of the print head, new shapes of u(t) are generated and tested practically. The influences of different piezo signals on the printing process are shown by measuring volume and velocity of the generated stable droplets. The article shows a method of optimizing a piezo activating signal to gain accuracy and resolution for inkjet printed electrical circuits.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2008.24.1.art00031_1
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Dominik Cibis, Klaus Krüger, "Optimization of a DoD Print Head Signal for the Ink-Jetting of Conductive Circuits"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP24),  2008,  pp 125 - 128,  https://doi.org/10.2352/ISSN.2169-4451.2008.24.1.art00031_1

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Copyright © Society for Imaging Science and Technology 2008
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NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20080101)2008:1L.125;1-
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Articles
Optimization of a DoD Print Head Signal for the Ink-Jetting of Conductive Circuits
CibisDominik
KrügerKlaus
01012008
2008
1
125
128
2008
The inkjet-printing principle is becoming more and more important for electronical applications. Printing conductive circuits is possible with colloidal inks so far, but stability of the printing process is not guaranteed at all times.The piezo activation signal, meaning its shape, strength and duration influences the droplet formation process and printing stability enormously. The droplets' velocity and volume can vary from 1 to 6 m/s and 100 to 300 pL respectively for a 100 μm nozzle print head. Small droplets are desired for highest resolution, but they depend on the piezo activation signal u(t). Furthermore, the stability of the printing process is influenced by the energy provided to the droplet.By means of a frequency response analysis of the print head, new shapes of u(t) are generated and tested practically. The influences of different piezo signals on the printing process are shown by measuring volume and velocity of the generated stable droplets. The article shows a method of optimizing a piezo activating signal to gain accuracy and resolution for inkjet printed electrical circuits.