Print head design for ballistic aerosol marking with smooth particulate injection from an array of inlets into a matching array of microchannels
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United States of America Patent
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Mar 2, 2021
Grant Date -
Jun 11, 2015
app pub date -
Dec 6, 2013
filing date -
Dec 6, 2013
priority date (Note) -
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Abstract
Disclosed herein is a material ejector (e.g., print head) geometry having alignment of material inlet channels in-line with microchannels, symmetrically disposed in a propellant flow, to obtain smooth, well-controlled, trajectories in a ballistic aerosol ejection implementation. Propellant (e.g., pressurized air) is supplied from above and below (or side-by-side) a microchannel array plane. Obviating sharp (e.g., 90 degree) corners permits propellant to flow smoothly from macroscopic source into the microchannels.
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