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Volume: 24 | Article ID: art00033_1
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Links between fluid rheology and drop-on-demand jetting and printability
Stephen Hoath
Graham Martin
Tri Tuladhar
Malcolm Mackley
Ian Hutchings
  DOI :  10.2352/ISSN.2169-4451.2008.24.1.art00033_1  Published Online :  January 2008
Abstract

This paper links measurements of jetting performance in drop-on-demand printing with the high-frequency rheological properties of model viscoelastic fluids containing linear polymers with various molecular weights.Jet formation and evolution were studied for solutions of polystyrene in diethyl phthalate. Ligament length, initial jet ejection speeds and ligament extension and retraction rates were determined by high-resolution imaging with high time resolution. For these fluids, the viscosity measured under low shear-rate conditions showed no correlation with their jetting performance. The jetting behavior was, however, well correlated with high frequency rheological properties measured at 5 kHz with a piezoelectric axial vibrator (PAV) rheometer.This study shows that high frequency rheometry can provide useful predictive data about the jettability of fluids, and differentiate between inks that have similar low shear-rate viscosity yet show different jetting behavior.

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.art00033_1
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Stephen Hoath, Graham Martin, Tri Tuladhar, Malcolm Mackley, Ian Hutchings, "Links between fluid rheology and drop-on-demand jetting and printability"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP24),  2008,  pp 130 - 133,  https://doi.org/10.2352/ISSN.2169-4451.2008.24.1.art00033_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.130;1-
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Articles
Links between fluid rheology and drop-on-demand jetting and printability
HoathStephen
MartinGraham
TuladharTri
MackleyMalcolm
HutchingsIan
01012008
2008
1
130
133
2008
This paper links measurements of jetting performance in drop-on-demand printing with the high-frequency rheological properties of model viscoelastic fluids containing linear polymers with various molecular weights.Jet formation and evolution were studied for solutions of polystyrene in diethyl phthalate. Ligament length, initial jet ejection speeds and ligament extension and retraction rates were determined by high-resolution imaging with high time resolution. For these fluids, the viscosity measured under low shear-rate conditions showed no correlation with their jetting performance. The jetting behavior was, however, well correlated with high frequency rheological properties measured at 5 kHz with a piezoelectric axial vibrator (PAV) rheometer.This study shows that high frequency rheometry can provide useful predictive data about the jettability of fluids, and differentiate between inks that have similar low shear-rate viscosity yet show different jetting behavior.