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Inkjet printing of phase-change materials with Xaar1001 printheads
KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK. XaarJet AB, Järfälla, Sweden .
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2010 (English)In: NIP & Digital Fabrication Conference, 2010 International Conference on Digital Printing Technologies, 2010, 319-322 p.Conference paper (Refereed)
Abstract [en]

Inkjet printing of phase-change or hot melt materials allows to produce etch masks by digital and additive processing, thus enabling highly efficient fabrication of printed circuit boards, solar cells etc. Previously the binary inkjet printing with drop volumes of 50 pL was demonstrated with Xaarl26 end-shooter printheads.[1] The present work describes new results on printing with XaarlOOl printheads. These printheads offer both, grayscale printing with a subdrop volume of 6 pL and excellent reliability by way of their unique'true throughflow' capability, respectively. While the advantage of grayscale printing for high-resolution patterning is obvious and straight forward, the complexity lies in the recirculating ink systems that provide the constant ink flow through the printhead channels. A narrow temperature range has to be established throughout the total ink path, which avoids hot spots that would damage the inks as well as cold spots that counteract the ink flow rate. Print results with Sunjet Crystal HEP9520, operating between 80 °C and 90 °C, clearly show good droplet formation for 7 distinct gray levels spanning a range from 5 to 37 pL with increments of 5.3 pL at a frequency of 5 kHz.

Place, publisher, year, edition, pages
2010. 319-322 p.
Keyword [en]
Additive processing, Cold spots, Drop volume, Droplet formation, Etch mask, Gray levels, Gray scale, High-resolution patterning, Hot melt, Hot spot, Ink flow, Ink systems, Narrow temperature ranges, New results, Phase changes, Print head, Throughflow, Digital printing, Fabrication, Ink jet printers, Ink jet printing, Phase change materials, Printed circuit boards, Ink
National Category
Other Engineering and Technologies
URN: urn:nbn:se:kth:diva-150265ScopusID: 2-s2.0-79955742477ISBN: 978-089208293-3OAI: diva2:743104
26th International Conference on Digital Printing Technologies, NIP26 and 6th International Conference on Digital Fabrication 2010, DF 2010, 19 September 2010 through 23 September 2010, Austin, TX, United States

QC 20140903

Available from: 2014-09-03 Created: 2014-09-01 Last updated: 2014-09-03Bibliographically approved

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