Meniscus motion and drop formation in inkjet printing —

Effects of Pulse Voltage on the Droplet Formation of Alcohol

Keywords: inkjet printing, droplet formation, drop-on-demand, piezoeletric printhead 1. Introduction Drop-on-demand (DOD) inkjet printing process is an attractive method for direct writing of liquids in the desired locations.1) can be Get price

Improving the drop consistency of an inkjet printhead by

Inkjet is an important technology in wide format (color) printing. In this study, an inkjet printhead is considered that comprises two arrays of channels with a high nozzle per inch ratio. The printhead works according to the drop on Get price

Operability diagram of drop formation and its response to

2011/02/01For proper inkjet printing, a single primary drop should be formed periodically synchronized with the piezoelectric actuation. However, in reality, there often found abnormal drop formation such as drop formation with satellites, . Get price

Methods for detecting air bubble in piezo inkjet dispensers

2009/06/25As a result, information on the meniscus motion behavior resulting from negative pressure can be lost because the meniscus motion will be hidden inside the nozzle, as shown in Fig. 4(a). Therefore, the first 40 μs part of the meniscus motion was not measurable, as shown in Fig. 3, and the negative pressure wave dominates since the rising part of the applied waveform results in the Get price

Nonaxisymmetric Effects in Drop

2020/05/28Drop-on-demand (DOD) inkjet printing is well characterized and a well-studied problem, but nonaxisymmetric effects are typically ignored, while these effects can severely reduce the print-head performance and its stability. In this paper we first review nonaxisymmetric droplet formation originating from geometrical effects. We then focus on the possibility that observed nonaxisymmetry arises Get price

Improving the drop consistency of an inkjet printhead by

Inkjet is an important technology in wide format (color) printing. In this study, an inkjet printhead is considered that comprises two arrays of channels with a high nozzle per inch ratio. The printhead works according to the drop on Get price

Inkjet status monitoring using meniscus measurement

Meniscus motion measurement techniques have been developed such that the jetting condition in a piezo inkjet head can be monitored. Acquired CCD camera images, where a strobe light from an LED (Light Emitting Diode) was synchronized by the jetting signal, were used to measure the meniscus motion. For efficient image processing of the acquired Get price

Charged Satellite Drop Avoidance in Electrohydrodynamic

satellite drop leads to more complex satellite/meniscus interaction than that in traditional inkjet printing. Here, we numerically study the formation and flight behavior of the charged satellite drop. This paper discovered that the Get price

One Dimensional Model for Droplet Ejection Process in Inkjet

Inkjet technologies have advanced significantly since the first commercialization in 1970s, with focus in text and graphic printing. The dramatic expansion of printing material [] makes it not only a term describing graphic printing, but also a term covering a range of technologies which involve the ejection of droplets from a printhead onto a substrate. Get price

Secondary Tail Formation and Breakup in Piezoacoustic Inkjet

N2 - The role of meniscus motion and ink viscosity in the formation of a secondary tail and its breakup are studied experimentally during the picoliter-droplet formation process of a MEMS piezoacoustic inkjet print head using laser Get price

One Dimensional Model for Droplet Ejection Process in Inkjet

Inkjet technologies have advanced significantly since the first commercialization in 1970s, with focus in text and graphic printing. The dramatic expansion of printing material [] makes it not only a term describing graphic printing, but also a term covering a range of technologies which involve the ejection of droplets from a printhead onto a substrate. Get price

[PDF] Meniscus motion and drop formation in inkjet printing

Meniscus motion and drop formation in inkjet printing. Inkjet technology is a very precise and highly flexible technique, which produces microscale drops which are jetted onto a carrier substrate. This technology is well known for e.g. document printing, but is still pushed to generate smaller droplets with a higher drop formation rate. Get price

Controlled cavity collapse: scaling laws of drop formation

Controlled cavity collapse: scaling laws of drop formation† A. Said Ismail, a Alfonso M. Gan˜an-Calvo,b J. Rafael Castrejon-Pita, c Miguel A. Herradab and Alfonso A. Castrejon-Pita *a The formation of transient cavities at liquid Get price

Controlled cavity collapse: scaling laws of drop formation

is ornal is ' e Royal Society of Cemistry 2018 Soft Matter, 2018, 14, 7671--7679 | 771 Cite tis: SoftMatter, 2018, 14,7671 Controlled cavity collapse: scaling laws of drop formation† A. Said Ismail, a Alfonso M. Gan˜an-Calvo,b J. Rafael Castrejon-Pita, c Get price

Controlled cavity collapse: scaling laws of drop formation

Controlled cavity collapse: scaling laws of drop formation† A. Said Ismail, a Alfonso M. Gan˜an-Calvo,b J. Rafael Castrejon-Pita, c Miguel A. Herradab and Alfonso A. Castrejon-Pita *a The formation of transient cavities at liquid Get price

(PDF) Inkjet printing of polymer solutions and the role of chain

Experimental Materials Instrumentation All solvents were obtained from Sigma Aldrich UK and were Inkjet printing was carried out using a MicroJetTM drop-on- used as received. A A range of compositionally equivalent demand dispensing device for room-temperature operation cellulose ester (CE) polymers where supplied by Eastman (Microfab, MJ-AB-01). Get price

Secondary Tail Formation and Breakup in Piezoacoustic Inkjet

2020/02/01The role of meniscus motion and ink viscosity in the formation of a secondary tail and its breakup are studied experimentally during the picoliter-droplet formation process of a MEMS piezoacoustic inkjet print head using laser-induced 8-ns single-flash stroboscopic imaging with a temporal resolution of 100 ns. It is found that the formation of the secondary tail is driven by meniscus motion Get price

One Dimensional Model for Droplet Ejection Process in Inkjet

Inkjet technologies have advanced significantly since the first commercialization in 1970s, with focus in text and graphic printing. The dramatic expansion of printing material [] makes it not only a term describing graphic printing, but also a term covering a range of technologies which involve the ejection of droplets from a printhead onto a substrate. Get price

Meniscus motion and drop formation in inkjet printing

2015/02/19Drop-on-Demand inkjet printers are actuated using pressure waves, which are create by for example a piezo acoustic actuator. The meniscus is deformed by the pressure wave to produce a microdroplet. In this thesis we aim at creating methods and improving existing methods, to understand the formation of the microdroplets. Get price

Controlled cavity collapse: scaling laws of drop formation

is ornal is ' e Royal Society of Cemistry 2018 Soft Matter, 2018, 14, 7671--7679 | 771 Cite tis: SoftMatter, 2018, 14,7671 Controlled cavity collapse: scaling laws of drop formation† A. Said Ismail, a Alfonso M. Gan˜an-Calvo,b J. Rafael Castrejon-Pita, c Get price

Experimental analysis of waveform effects on satellite and

or ligaments during drop formation can result in placement errors during printing when the inkjet head or substrate is moving. In this study, the effect of the driving waveform on drop formation is analyzed to determine effective dwell Get price

Charged Satellite Drop Avoidance in Electrohydrodynamic

satellite drop leads to more complex satellite/meniscus interaction than that in traditional inkjet printing. Here, we numerically study the formation and flight behavior of the charged satellite drop. This paper discovered that the Get price

Capillary waves in a sharp

2016/02/01Given that printing devices should be capable of forming fast and stable drops in equal volumes for high productivity, the meniscus must be rapidly damped for subsequent drops to be dispensed. However, satellite drops are formed with the increasing dispensing frequency of drops (firing frequency) because of meniscus instability, thus resulting in low printing quality [10], [11] . Get price

Chair: Physics of Fluids group Drop impact and spreading in

Chair: Physics of Fluids group Drop impact and spreading in inkjet printing Description Inkjet printing is a rapidly evolving technique in which small liquid drops are jetted onto a substrate to create an image or text. One of the Get price

Meniscus motion and drop formation in inkjet printing

- Meniscus motion and drop formation in inkjet printing Figure 4.5: (a) Microdroplets shooting in the open air, the drops reach their terminal velocity and deflect from the straight path. (b) Microroplets reflected at the charged target; a portion of the droplets are accelerated away from the target. Get price

Meniscus motion and drop formation in inkjet printing

The remaining variation is primarily caused by the residual variation in the reproducibility of the drop formation (as shown in the inset of Fig. 5.6) - Meniscus motion and drop formation in inkjet printing Skip to search form Skip to Get price

Printhead Health in Industrial Inkjet Printing: In‐Line and Off

Printhead Health in Industrial Inkjet Printing: In‐Line and Off‐Line Detection of Poor Drop Formation Herman Wijshoff Oc Technologies B.V., Research and Development, Van der Grintenstraat 1, 5114 HH Venlo, The Netherlands Get price

Operability diagram of drop formation and its response to

2011/02/01For proper inkjet printing, a single primary drop should be formed periodically synchronized with the piezoelectric actuation. However, in reality, there often found abnormal drop formation such as drop formation with satellites, . Get price

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