FLOW CHARACTERISTICS OF INK-JET INKS   USED FOR FUNCTIONAL PRINTING

Katarina Dimic Misic; Alp Karakoc; Merve Ozkan; Syed Ghufran Hashmi; Thad Maloney; Jouni Paltakari

doi:10.5937/jaes13-9575

Katarina Dimic Misic AAlto University Finland
Alp Karakoc Alp Karakoc Aalto University, School of Chemical Technology, Finland
Merve Ozkan Merve Ozkan Aalto University, School of Chemical Technology, Finland
Syed Ghufran Hashmi Syed Ghufran Hashmi Aalto University, New Energy Technologies Group, Finland
Thad Maloney Thad Maloney Aalto University, School of Chemical Technology, Finland
Jouni Paltakari

DOI: https://doi.org/10.5937/jaes13-9575

Keywords: Ink droplet trajectory, Nozzle clogging, Rheology of inkjet inks, Inkjet printing,

Abstract

The rheology-related effects of nozzle clogging in inkjet printing can seriously affect ink ejection rate and result in irregular droplet trajectory, resulting in poor printing results. In this study three different inkjet inks, used for functional printing with a Dimatix materials inkjet printer, are investigated rheologically. In connection with rheological observation a novel method of inkjet trajectory image analysis gives insight into the irregularity of directional deviation due to clogging of nozzles of the printer It is found that the type of solvent used in the ink formulation has an important influence on the rheological behaviour in the printing regime, which directly has an effect on ink-droplet trajectory and contact characteristic with the substrate.