%0 Conference Paper %1 mallinson2021heating %A Mallinson, S. G. %A McBain, G. D. %A Horrocks, G. D. %A North, A. J. %A Lakshmi, C. S. %A Starke, T. H. K. %B 12th Australasian Heat and Mass Transfer Conference %D 2021 %K 35k05-heat-equation 80a20-heat-and-mass-transfer 80m10-heat-transfer-finite-element-methods %T Heating prior to nucleation in thermal inkjet actuators %X Thermal inkjet actuators operate by passing a current through an electrical resistor, the heater, in contact with a working liquid such as ink. This heats the liquid rapidly (dT /dt ≈ 10 8 − 10 9 K/s), and once the liquid temperature exceeds the superheat limit, it flash boils. The resultant high temperature (≈ 300 ◦ C) and pressure (≈ 10 MPa) bubble expands, forcing the ink through a nozzle, forming a droplet which then travels through the print gap until it strikes the media. Here, we discuss the bubble nucleation criterion for a novel thermal inkjet technology, using numerical and analytical models. Both models give comparable results, with differences of ten percent or less. These values are also found to compare reasonably well with data from bubble visualization experiments.

@inproceedings{mallinson2021heating, abstract = {Thermal inkjet actuators operate by passing a current through an electrical resistor, the heater, in contact with a working liquid such as ink. This heats the liquid rapidly (dT /dt ≈ 10 8 − 10 9 K/s), and once the liquid temperature exceeds the superheat limit, it flash boils. The resultant high temperature (≈ 300 ◦ C) and pressure (≈ 10 MPa) bubble expands, forcing the ink through a nozzle, forming a droplet which then travels through the print gap until it strikes the media. Here, we discuss the bubble nucleation criterion for a novel thermal inkjet technology, using numerical and analytical models. Both models give comparable results, with differences of ten percent or less. These values are also found to compare reasonably well with data from bubble visualization experiments.}, added-at = {2021-06-18T07:07:39.000+0200}, author = {Mallinson, S. G. and McBain, G. D. and Horrocks, G. D. and North, A. J. and Lakshmi, C. S. and Starke, T. H. K.}, biburl = {https://www.bibsonomy.org/bibtex/25fe5ba307a606ac53946370d9519e115/gdmcbain}, booktitle = {12th Australasian Heat and Mass Transfer Conference}, eventdate = {8-9 July}, interhash = {6c25dbe2b75101c7b61fd8509e357e08}, intrahash = {5fe5ba307a606ac53946370d9519e115}, keywords = {35k05-heat-equation 80a20-heat-and-mass-transfer 80m10-heat-transfer-finite-element-methods}, organization = {The University of Sydney}, timestamp = {2021-06-18T07:11:04.000+0200}, title = {Heating prior to nucleation in thermal inkjet actuators}, year = 2021 }