Patent ID: 6273559
Filing Date: 2001-08-14
Classification: B41J

Abstract:
Process for projecting an electrically conducting liquid comprising the steps of:emitting at least one continuous liquid jet at a constant speed V.sub.j ;stimulating the jet on request, so as to break it at two predetermined distinct break off points to form liquid drops at a given emission frequency F;applying different electric charge quantities to the drops, depending on their break off points; and thenapplying a same electric field on all drops, so as to only deviate drops formed at one of the first of the said break off points which is relatively distant;and in which the jet is stimulated such that the two break off points are separated by a distance .DELTA.D strictly less than a wavelength .lambda. of the jet, defined by the relation .lambda.=V.sub.j /F, and approximately the same quantity of charge is applied to all drops formed within an area around the second of the said break off points, said area centered on the second break off point and having a length equal to approximately .lambda./4.