METHOD AND SYSTEM FOR MAINTAINING JETTING STABILITY IN A JETTING DEVICE
First Claim
1. Method for maintaining jetting stability in a jetting device for jetting a droplet of an electrically conductive fluid, the jetting device comprising a fluid chamber body defining a fluid chamber and having an orifice extending from the fluid chamber to an outer surface of the fluid chamber element and an actuation means, the actuation means comprising:
- a magnetic field generating means for generating a magnetic field in at least a part of the fluid chamber; and
an electrical current generating means for generating an electrical current in the electrically conductive fluid in the part of the fluid chamber provided with the magnetic field,the actuation means being configured to provide an actuation pulse for expelling droplets of the electrically conductive fluid from the fluid chamber through the orifice, the actuation means being further configured to provide a maintenance pulse, the actuation pulse and the maintenance pulse each generating a Lorentz force in the conductive fluid in said part of the fluid chamber,the method comprising the step of;
a) applying the maintenance pulse to at least a part of the electrically conductive fluid in the part of the chamber provided with the magnetic field, the maintenance pulse being configured to retract a meniscus of the electrically conductive fluid into the fluid chamber.
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Accused Products
Abstract
The invention relates to a method for maintaining and/or restoring the jetting stability in a jetting device, the jetting comprising fluid chamber body having arranged therein an orifice, the jetting device being configured to comprise a quantity of an electrically conductive fluid. The jetting device comprises actuation means, comprising a magnetic field generating means and an electrical current generating means for, in operation, applying an actuation pulse to the electrically conductive fluid. The method for maintaining and/or restoring the jetting stability comprises applying an maintenance pulse to at least a part of the electrically conductive fluid. The invention further relates to a jetting device, employing the described method.
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Citations
5 Claims
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1. Method for maintaining jetting stability in a jetting device for jetting a droplet of an electrically conductive fluid, the jetting device comprising a fluid chamber body defining a fluid chamber and having an orifice extending from the fluid chamber to an outer surface of the fluid chamber element and an actuation means, the actuation means comprising:
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a magnetic field generating means for generating a magnetic field in at least a part of the fluid chamber; and an electrical current generating means for generating an electrical current in the electrically conductive fluid in the part of the fluid chamber provided with the magnetic field, the actuation means being configured to provide an actuation pulse for expelling droplets of the electrically conductive fluid from the fluid chamber through the orifice, the actuation means being further configured to provide a maintenance pulse, the actuation pulse and the maintenance pulse each generating a Lorentz force in the conductive fluid in said part of the fluid chamber, the method comprising the step of; a) applying the maintenance pulse to at least a part of the electrically conductive fluid in the part of the chamber provided with the magnetic field, the maintenance pulse being configured to retract a meniscus of the electrically conductive fluid into the fluid chamber. - View Dependent Claims (2, 3, 4)
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5. Jetting device for jetting a droplet of an electrically conductive fluid, the jetting device comprising:
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a fluid chamber body defining a fluid chamber and having an orifice extending from the fluid chamber to an outer surface of the fluid chamber element, the fluid chamber being configured for holding an amount of the electrically conductive fluid; and an actuation means configured to provide an actuation pulse for expelling droplets of the electrically conductive fluid from the fluid chamber through the orifice, the actuation means comprising; a magnetic field generating means for generating a magnetic field in at least a part of the fluid chamber; and an electrical current generating means for generating an electrical current in the electrically conductive fluid in the part of the fluid chamber provided with the magnetic field, the actuation means being further configured to provide a maintenance pulse for retracting the meniscus of the electrically conductive fluid into the fluid chamber.
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Specification