Patent ID: 9744763
Date: 2017-08-29
CPC Classifications: B22F,B41J,H05K

Claim:
1. A method for jetting a droplet of an electrically conductive fluid using a jetting device, the jetting device comprising a fluid chamber body defining a fluid chamber and having an orifice operatively coupled to the fluid chamber for ejecting a droplet in a droplet ejection direction, and an actuator, the actuator comprising: a magnetic field generator configured to generate a magnetic field in at least a part of the fluid chamber; and an electrical current generator configured to generate an electrical current in the electrically conductive fluid in the part of the fluid chamber provided with the magnetic field, the method comprising the steps of: a) applying an electrical current to the electrically conductive fluid positioned in the magnetic field to generate a Lorentz force in an actuation direction that is an opposite direction compared to the droplet ejection direction, wherein the Lorentz force is such that the electrically conductive fluid is retracted in the actuation direction and moved into the fluid chamber, and b) as a result of the Lorentz force generated in step a), ejecting a droplet of the electrically conductive fluid in the droplet ejection direction.