Effects of Pulse Voltage on the Droplet Formation of Alcohol and Ethylene Glycol in a Piezoelectric Inkjet Printing Process with Bipolar Pulse

Abstract Flow simulations of jetting of inkjet drops are presented for water and ethylene glycol. In the inkjet printing process, droplet jetting behaviour is the deciding parameter for print quality. The multiphase volume of fluid (VOF) method is used because the interaction between two phases (air and liquid) is involved in the drop formation process. The commercial inkjet printer has a nozzle diameter of ∼73.2μm. In this work, a simulation model of inkjet printer nozzles with different diameters 40μm, 60μm, and 80μm are developed using ANSYS FLUENT software. It is observed that when water is taken as solvent then the stable droplets are generated at 60μm nozzle diameter till 9μs because of its low viscosity. For higher diameter, the stamen formation is observed. Ethylene glycol stable droplets are achieved at 80μm nozzle diameter till 9μs because of their high viscosity (∼10 times that of water). Along with the droplet formation, the sustainability of the droplet in the air before reaching the substrate is also important. The simulation model is an inexpensive, fast, and flexible alternative to study the ink characteristics of the real-world system without wasting resources.

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The effect of the echo-time of a bipolar pulse waveform on molten metallic droplet formation by squeeze mode piezoelectric inkjet printing

Microelectronics Reliability ◽

10.1016/j.microrel.2014.11.014 ◽

2015 ◽

Vol 55 (3-4) ◽

pp. 630-636 ◽

Cited By ~ 6

Author(s):

Cheng-Han Wu ◽

Weng-Sing Hwang

Keyword(s):

Inkjet Printing ◽

Droplet Formation ◽

Pulse Waveform ◽

Bipolar Pulse ◽

Metallic Droplet ◽

Echo Time

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THREE-DIMENSIONAL SIMULATIONS OF THE DROPLET FORMATION DURING THE INKJET PRINTING PROCESS

International Communications in Heat and Mass Transfer ◽

10.1016/s0735-1933(02)00439-6 ◽

2002 ◽

Vol 29 (8) ◽

pp. 1109-1118 ◽

Cited By ~ 21

Author(s):

T.M. Liou ◽

K.C. Shih ◽

S.W. Chau ◽

S.C. Chen

Keyword(s):

Inkjet Printing ◽

Three Dimensional ◽

Droplet Formation ◽

Printing Process ◽

Three Dimensional Simulations

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Additive manufacturing of thin electrolyte layers via inkjet printing of highly-stable ceramic inks

Journal of Advanced Ceramics ◽

10.1007/s40145-020-0439-9 ◽

2021 ◽

Author(s):

Zhongqi Zhu ◽

Zhiyuan Gong ◽

Piao Qu ◽

Ziyong Li ◽

Sefiu Abolaji Rasaki ◽

...

Keyword(s):

Inkjet Printing ◽

Polyacrylic Acid ◽

Storage Period ◽

Structural Quality ◽

Solid Loading ◽

Ultrasonic Dispersion ◽

Promising Alternative ◽

Printing Process ◽

High Solid ◽

High Solid Loading

AbstractInkjet printing is a promising alternative for the fabrication of thin film components for solid oxide fuel cells (SOFCs) due to its contactless, mask free, and controllable printing process. In order to obtain satisfying electrolyte thin layer structures in anode-supported SOFCs, the preparation of suitable electrolyte ceramic inks is a key. At present, such a kind of 8 mol% Y2O3-stabilized ZrO2 (8YSZ) electrolyte ceramic ink with long-term stability and high solid loading (> 15 wt%) seems rare for precise inkjet printing, and a number of characterization and performance aspects of the inks, such as homogeneity, viscosity, and printability, should be studied. In this study, 8YSZ ceramic inks of varied compositions were developed for inkjet printing of SOFC ceramic electrolyte layers. The dispersing effect of two types of dispersants, i.e., polyacrylic acid ammonium (PAANH4) and polyacrylic acid (PAA), were compared. The results show that ultrasonic dispersion treatment can help effectively disperse the ceramic particles in the inks. PAANH4 has a better dispersion effect for the inks developed in this study. The inks show excellent printable performance in the actual printing process. The stability of the ink can be maintained for a storage period of over 30 days with the help of initial ultrasonic dispersion. Finally, micron-size thin 8YSZ electrolyte films were successfully fabricated through inkjet printing and sintering, based on the as-developed high solid loading 8YSZ inks (20 wt%). The films show fully dense and intact structural morphology and smooth interfacial bonding, offering an improved structural quality of electrolyte for enhanced SOFC performance.

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Multicomponent oxide thin-film transistors fabricated by a double-layer inkjet printing process

Thin Solid Films ◽

10.1016/j.tsf.2011.04.149 ◽

2011 ◽

Vol 520 (4) ◽

pp. 1334-1340 ◽

Cited By ~ 8

Author(s):

Antonis Olziersky ◽

Anna Vilà ◽

Juan Ramón Morante

Keyword(s):

Thin Film ◽

Double Layer ◽

Inkjet Printing ◽

Thin Film Transistors ◽

Oxide Thin Film ◽

Printing Process ◽

Multicomponent Oxide

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The Study on Color Quality Attributes of IMR with PET on White Ink by UV Inkjet

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1004-1005.799 ◽

2014 ◽

Vol 1004-1005 ◽

pp. 799-802 ◽

Cited By ~ 1

Author(s):

Chang Lang Chen ◽

Yu Tung Chang ◽

Sheng Hao Taso ◽

Weichieh Hsu

Keyword(s):

Inkjet Printing ◽

Screen Printing ◽

Quality Attributes ◽

Gravure Printing ◽

Printing Process ◽

Color Quality ◽

Study Results ◽

Color Differences ◽

Pet Film ◽

Better Than

The In-Mold Roller is a revolutionary printing process by which objects are 3D decorated. Products decorated by In-Mold Roller are waterproof and protected from fading. What’s more, these kinds of decorations strongly increase the beauty, desirability and value of the objects. The In-Mold Roller is now using either of gravure printing and screen printing to print PET film. However, there are some problems with these two techniques. This research is to investigate potential usages of combining In-Mold Roller with digital UV inkjet printing in 3D decoration, e.g. in personalized printing services. Study results found that when the coverage and the resolution of inkjet printing become higher, the SIDs will become higher as well. When transferred to ABS, SIDs in each combination will increase. Each combination of inkjet conditions, with the isolation of white ink, color differences are less variant. TVIs of white ink decrease 30% to 40% halftone and display in “M” type. In print contrast, C and K colors of each combination are better than M and Y colors. After transferred into print contrast, each combination of PC will be higher about 2 to5. When transferred to ABS, color variances of each combination are not huge, and color differences are about 3to5.

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Research on Thermal Inkjet Technology Based on CFD

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1032.101 ◽

2021 ◽

Vol 1032 ◽

pp. 101-107

Author(s):

Yi Fei Wang ◽

Zhong De Shan ◽

Hao Qin Yang ◽

Yong Xin Ren ◽

Ling Han Meng

Keyword(s):

Simulation Model ◽

Inkjet Printing ◽

Cfd Simulation ◽

Test Method ◽

Physical Parameters ◽

Printing Process ◽

Orthogonal Test Method ◽

Fluent Software ◽

Comparison Of The Results ◽

Thermal Inkjet Printing

In this paper, a thermal inkjet printing simulation model is established in the CFD simulation platform, and the influence of inkjet driver parameters and ink physical parameters on the printing process is studied by numerical simulation. The evaporation-condensation model is coupled with the VOF multiphase flow model in Fluent software to establish a thermal inkjet printing process simulation model. Based on the orthogonal test method, we investigate the influence of fluid physical parameters (ink viscosity, surface tension) and inkjet driver parameters (heater temperature value) on droplet formation by changing the physical parameters of the material and the boundary conditions of the model. Through the comparison of the results, exploring the adjustment rules of thermal inkjet technology and obtaining the optimal combination of material and process parameters for high-quality ink drop formation.

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