Direct-Write Process for UV-Curable Epoxy Materials by Inkjet Technology

2002 ◽  
Vol 758 ◽  
Author(s):  
W. Voit ◽  
K. V. Rao ◽  
W. Zapka
Keyword(s):  
Focal Length ◽  
Direct Write ◽  
Grid Pattern ◽  
Uv Curable ◽  
Carrier Fluid ◽  
On Demand ◽  
Drop On Demand ◽  
High Throughput Method ◽  
Planar Convex ◽  
Placement Accuracy

ABSTRACTWe demonstrate drop-on-demand inkjet printing technique to be a high throughput method for the patterned deposition of UV-curable epoxy materials. Different multi-nozzle printheads have been used to produce epoxy droplets with controlled volume in the range from 15 to 180 pl, and to apply the droplets with high placement accuracy. For a large dot grid pattern, which was printed by addressing 126 individual ink channels, standard deviations of σx = 2.3 μm and σy = 2.6 μm have been achieved for the error in dot placement. The deposited epoxy dots were found to form planar convex lenses with a focal length of 142 μm. In addition, we have successfully printed magnetic nanoparticles in a carrier fluid with the drop-on-demand printheads, as a step towards the production of composites.

Modeling Height Profile for Drop-on-Demand Print of UV Curable Ink

2019 ◽  
Author(s):  
Yumeng Wu ◽  
George Chiu
Keyword(s):  
Numerical Models ◽  
Sweet Spot ◽  
Single Drop ◽  
Height Profile ◽  
Uv Curable ◽  
On Demand ◽  
Graphic Model ◽  
Drop On Demand ◽  
Proposed Model ◽  
Better Than

Abstract This paper proposes a height profile model for drop-on-demand printing of UV curable ink. Existing models include superposition of single drops, numerical models, and graphic-based model. They are either too complicated or over simplified. Graphic model intends to find a sweet spot in between, however, accuracy is marginally improved from superposition model while it demands more computation. The proposed model aims to achieve the same as graphic model by introducing volume and area propagation matrices to reflect the localized ink flow from higher location to the lower, while avoiding the detailed physics behind it. This model assumes a constant volume and area propagation of subsequent drop due to height profile difference. It is validated with experiments on single drop, 2-drop and 3-drop line printing. Stability of this model is analyzed.. Using root mean square (RMS) error as benchmark, proposed model achieves 6.6% along the center row and 7.4% overall, better than existing models.

scholarly journals Microstructural Characterization of Pure Tin Produced by the Drop-on-Demand Technique of Liquid Metal Jetting

2019 ◽  
Vol 50 (9) ◽  
pp. 4000-4005 ◽  
Author(s):  
Yaakov Idell ◽  
Nicholas Watkins ◽  
Andrew Pascall ◽  
Jason Jeffries ◽  
Kerri Blobaum
Keyword(s):  
Liquid Metal ◽  
Microstructural Characterization ◽  
On Demand ◽  
Drop On Demand

A Pneumatic Drop-on-Demand Printing System With an Extended Printable Liquid Range

2015 ◽  
Vol 24 (4) ◽  
pp. 768-770 ◽  
Author(s):  
In Ho Choi ◽  
Young Kwon Kim ◽  
Sangmin Lee ◽  
Seung Hee Lee ◽  
Joonwon Kim
Keyword(s):  
On Demand ◽  
Drop On Demand ◽  
Printing System

Formulation of a ceramic ink for a wide-array drop-on-demand ink-jet printer

2003 ◽  
Vol 29 (8) ◽  
pp. 887-892 ◽  
Author(s):  
X. Zhao ◽  
J.R.G. Evans ◽  
M.J. Edirisinghe ◽  
J.H. Song
Keyword(s):  
On Demand ◽  
Drop On Demand ◽  
Ink Jet

scholarly journals Experimental and numerical investigations regarding laser drop on demand jetting of Cu alloys

2017 ◽  
Vol 11 (3) ◽  
pp. 275-284 ◽  
Author(s):  
Stefan Stein ◽  
Michael Dobler ◽  
Tim Radel ◽  
Markus Strauß ◽  
Hannes Breitschwerdt ◽  
...  
Keyword(s):  
Numerical Investigations ◽  
On Demand ◽  
Drop On Demand ◽  
Cu Alloys

Characterization of cooling rate and microstructure of CuSn melt droplet in drop on demand process

2017 ◽  
Vol 27 (7) ◽  
pp. 1636-1644 ◽  
Author(s):  
Yi XU ◽  
N. ELLENDT ◽  
Xing-gang LI ◽  
V. UHLENWINKEL ◽  
U. FRITSCHING
Keyword(s):  
Cooling Rate ◽  
On Demand ◽  
Drop On Demand
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