Controlling density of dispensed printing material
AssigneeStratasys, Inc.
InventorAlexander Libinson
Life of this patent
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Abstract
A printing method includes controlling timing parameters for application of electrical pulses to a piezoelectric nozzle of an inkjet printing head so as to dispense droplets of a material from the nozzle. The timing parameters are controlled to introduce gas bubbles into the droplets of material so as to reduce the density of the material to a selected density value that is less than a natural density of the material.
Claims26
A printing method comprising controlling a timing parameter for application of electrical pulses to a piezoelectric nozzle of an inkjet printing head so as to dispense droplets of a material from the nozzle, the timing parameter being controlled to introduce gas bubbles into the material in the droplets so as to reduce the density of the material in the droplets to a selected density value that is less than a natural density of the material.
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12-16. (canceled)
A three-dimensional printer comprising a controller that is configured to apply electrical pulses to a piezoelectric nozzle of a printing head, the pulses being characterized by a timing parameter that is controllable by the controller, a value of the timing parameter being selectable so as to cause droplets of a material to be dispensed by the nozzle, the material in the droplets having a selected density value that is less than a natural density of the material.
23-24. (canceled)
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31-32. (canceled)
A printing method comprising dispensing droplets of material from a piezoelectric nozzle of an inkjet printing head while controlling a density of the dispensed material and controlling formation of gas bubbles within the droplets by selecting a ratio of a duration of each of a plurality of electrical pulses that are applied to the nozzle to expel the droplets, to an interval between successively applied pulses of the plurality of pulses, and by applying the pulses to the nozzle in accordance with the selection.
Dependencies are inferred from the claim text.