Jetting, In-Nozzle Meniscus Motion and Nozzle-Plate Flooding in an Industrial Drop-on-Demand Print Head

Hsiao, WK; Hoath, Steve; Martin, Graham D.; Hutchings, I.M.

doi:10.2352/issn.2169-4451.2011.27.1.art00019_1

Cited by 2 publications

(2 citation statements)

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“…For the measurement of the position and/or shape of the meniscus three methods are discussed: reflectional imaging, 33 imaging through a transparent nozzle 34,35 and the novel Particle Surface Imaging. In the reflectional imaging technique, the reflection of light at the meniscus is analyzed.…”

Section: Physical Quantitiesmentioning

confidence: 99%

“…Point sources and collimated light sources give higher resolution than diffusive light sources. Hsiao et al 33 used a setup where the light source was directed under a 21 • angle and the camera under a 14 • angle with respect to the main axis of the nozzle plate of a Xaar print head. They found this configuration maximizing the illumination within their space constraints.…”

Section: Reflectional Imagingmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Techniques for Retrieving Flow Information from within Inkjet Nozzles

Meulen¹,

Reinten²,

Dijksman³

et al. 2016

jist

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In drop-on-demand (DOD) inkjet printing microdroplets are ejected from the nozzle as a result of the internal acoustics set in motion by a pressure pulse from an expanding bubble or a piezoelement. The acoustic response, both in the frequency domain and in the time domain, and the resulting droplet formation processes are well-modeled and characterized by various experimental techniques. However, the behavior of the liquid meniscus in the nozzle is a critical mediator between these regimes and poorly accessible in experiment. The meniscus shape and motion vary between different print head designs, electrical pulse shapes and wetting conditions. In the last decade several novel approaches have been proposed and implemented to study experimentally the meniscus motion within inkjet nozzles. These experimental methods are reviewed here and compared in terms of accuracy and applicability.

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Section: Physical Quantitiesmentioning

confidence: 99%

Section: Reflectional Imagingmentioning

confidence: 99%