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Bubble dynamics induced by pulsed-laser evaporation of ink as a method to develop novel print heads SCIE SCOPUS

Title
Bubble dynamics induced by pulsed-laser evaporation of ink as a method to develop novel print heads
Authors
Jang, DHong, JKim, DChoa, SH
Date Issued
2006-03
Publisher
I S & T - SOC IMAGING SCIENCE TECHNOL
Abstract
The bubble dynamics induced by direct laser heating is experimentally analyzed as a first step to assess the technical feasibility of laser-based ink jet technology. To understand the interaction between laser light and ink, the absorption spectrum is measured for various ink colors and concentrations. The hydrodynamics of laser-generated bubbles is examined by laser flash photography When an Ar ion laser pulse (wavelength 488 nm) with an output power up to 600 mW is incident on the ink solution through a transparent window a hemispherical bubble with a diameter up to similar to 100 mu m can be formed with a lifetime in the range similar to O(10 mu s) depending on the laser power and the focal-spot size. A parametric study has been performed to reveal the effect of laser pulse width, output power. ink concentration, and color on the bubble dynamics. The results show that the bubble generated by a laser pulse is largely similar to that produced by a thin film heater. Consequently, the present work demonstrates the feasibility of developing a laser-actuated droplet generation mechanism for applications in ink jet print heads. Furthermore. the results of this work indicate that the droplet generation frequency is likely to be further increased by optimizing the process parameters. (C) 2006 Society for Imaging Science and Technology.
Keywords
CAVITATION BUBBLES; ABSORBING LIQUIDS; JET PRINTERS
URI
https://oasis.postech.ac.kr/handle/2014.oak/24019
DOI
10.2352/J.ImagingSci.Technol.(2006)50:2(173)
ISSN
1062-3701
Article Type
Article
Citation
JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY, vol. 50, no. 2, page. 173 - 180, 2006-03
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김동식KIM, DONGSIK
Dept of Mechanical Enginrg
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