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High speed imaging of ink separation in screen-printing / Sarah-Jane Potts; Christopher Phillips; Timothy Claypole

Advances in Printing and Media Technology - Proceedings of the 46th International Research Conference of iarigai, Volume: XLVI(VI), Pages: 8 - 15

Swansea University Authors: Sarah-Jane, Potts, Christopher, Phillips, Timothy, Claypole

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Abstract

Screen-printing is a versatile process used to print a wide range of printed electronics. However, there is a limited understanding of how the ink is deposited from the mesh to the substrate. Mathematical models have been suggested in the past, but there is not sufficient experimental evidence to va...

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Published in: Advances in Printing and Media Technology - Proceedings of the 46th International Research Conference of iarigai
ISBN: 978-3-948039-01-1
ISSN: 2409-4021
Published: Stuttgart, Germany
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URI: https://cronfa.swan.ac.uk/Record/cronfa53316
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Abstract: Screen-printing is a versatile process used to print a wide range of printed electronics. However, there is a limited understanding of how the ink is deposited from the mesh to the substrate. Mathematical models have been suggested in the past, but there is not sufficient experimental evidence to validate them. In order to identify key transfer mechanisms and their impact on the process, an investigation was instigated which focussed on the separation mechanism occurring when the mesh is contacted and released from the substrate. high-speed video imaging was used to assess the deposition and separation of a commercial carbon ink when printed at a range of line widths from 50µm to 400 µm as an essential step in the development and validation of predictive models. The length of ink bridging the mesh and substrate increased with line width. The ink separation process could be split up into separate stages of adhesion, extension, flow and separation suggested in the theory by Messerschmitt. The adhesion and extension stages were longer than the flow and separation stages for all line widths assessed
Keywords: carbon, inks, printed electronics
Start Page: 8
End Page: 15