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Ultra-High Speed Particle Image Velocimetry on Drop-on-Demand Jetting
(Proc 27th Int. Conf. on Digital Printing Technologies NIP27, 2011)
An experimental setup to study the dynamics of droplet jetting from a commercially available print-head is described. A MicroFab print-head with an 80 µm
diameter transparent nozzle was set to print droplets at a speed ...
The dynamics of the impact and coalescence of droplets on a solid surface
(Biomicrofluidics, 2011)
A simple experimental setup to study the impact and coalescence of deposited droplets is described. Droplet impact and coalescence have been investigated by high-speed particle image velocimetry. Velocity fields near the ...
Jetting, In-Nozzle Meniscus Motion and Nozzle-Plate Flooding in an Industrial Drop-on-Demand Print Head
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)
The state of the ink film at and near the nozzles of a drop-ondemand(DoD) print head during jetting has a direct impact on
printing performance and reliability. We have developed highspeed imaging apparatus and analytical ...
Dependence of drop speed on nozzle diameter, viscosity and drive amplitude in drop-on-demand ink-jet printing
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)
Results of recent experiments and numerical simulations are presented, which have been used to establish empirical rules for
the dependence of drop speed on nozzle diameter and drive amplitude for Newtonian and non-Newtonian ...
Holographic Measurement of Drop-on-Demand Drops in Flight
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)
The analysis of images of ink drops in flight can provide information about jet straightness, drop velocity and volume.
However trade-offs between field of view, optical and digital resolution and other factors such as ...
Imbibition dynamics of nano-particulate ink-jet drops on micro-porous media
(Nanotech, 2011-06)
Ink-jet printing of nano-metallic colloidal fluids on to
porous media such as coated papers has become a viable
method to produce conductive tracks for low-cost,
disposable printed electronic devices. However, the
formation ...