Patent ID: 8136928
Filing Date: 2012-03-20
Classification: B41J

Abstract:
1. Method for projecting a liquid in the form of drops from a generator comprising: pressurizing the liquid in a chamber provided with at least one exit nozzle such that at least one jet, with an average radius exits from the chamber at a certain velocity through a nozzle; disturbing the jet by a stimulation pulse such that the jet is broken up at a jet break up location, the pulse duration being less than four and a half times the ratio of the jet radius to velocity, wherein the stimulation efficiency being such that the jet is deformed with an amplitude of the diameter deformation of the jet which is greater than 20% of the average jet diameter of the continuous liquid jet, at a distance from the nozzle, wherein the distance is less than or equal to five times an optimum jet instability wavelength, the optimum jet instability wavelength which is the oscillation wavelength of the jet for which the jet is the most unstable.