Printing Method for Long Flight Distance by Laser-Induced Forward Transfer

In this study, a new laser-induced forward transfer (LIFT) method that makes it possible to eject high-viscosity inks with the pressure of the ring-shaped vapor bubble (bubble ring) is presented. The flight distance should be [greater than or equal to]500 [micro]m to increase the throughput in case...

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Bibliographic Details
Published inJournal of laser micro nanoengineering Vol. 15; no. 2; pp. 143 - 149
Main Authors Suhara, Hiroyuki, Aoto, Jun, Iwata, Muneaki
Format Journal Article
LanguageEnglish
Published Ibaraki Japan Laser Processing Society 01.09.2020
Reza Netsu Kako Kenkyukai
Subjects
Analysis
Converters
Droplets
Heat resistance
Industrial applications
Inks
Laser beams
Lasers
Methods
Printing
Printing inks
Receivers & amplifiers
Substrates
Thin films
Viscosity
Wave fronts
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Summary:In this study, a new laser-induced forward transfer (LIFT) method that makes it possible to eject high-viscosity inks with the pressure of the ring-shaped vapor bubble (bubble ring) is presented. The flight distance should be [greater than or equal to]500 [micro]m to increase the throughput in case of industrial applications. However, in case of a long gap, the ink is scattered; therefore, good printing quality could not be obtained. We succeeded in printing high-quality droplets even for long flight distances of 500 [micro]m or more. The laser beam was shaped by the beam size and wavefront converters and then transformed into an annular beam. The experiment was conducted when the gap between the donor and receiver substrates was in the range of 200-2000 [micro]m. The landing droplet was microscopically observed to form an almost perfect circle. Our proposed system can be used in various practical applications, including QR code printing. Keywords: LIFT, bubble ring, wavefront converter, droplet, flight distance, viscosity
ISSN:1880-0688
1880-0688
DOI:10.2961/jlmn.2020.02.2012