Patent ID: 6478413
Filing Date: 2002-11-12
Classification: B41J

Abstract:
A charging plate arrangement for liquid jet charging devices in which liquid filaments injected through orifices provided on an orifice member are charged, so that charged droplets are produced by subdividing the liquid filaments, formed by the process comprising the steps of:forming, by removing material from a first surface, an unrounded edge at which a work surface on said first surface intersects with a side surface on a substrate made of non-conductive material; forming a plurality of electrodes with continuous current-carrying extensions, each of a respective said electrode, made of conductive material on said side surface of the substrate with a distal end thereof aligned with the unrounded edge, at intervals in a longitudinal direction of the edge, with said current-carrying extensions extending away from said electrodes along said second surface, said side surface transitioning into said second surface through a rounded transition, said electrodes transitioning into said current-carrying extensions and following said rounded transition from said side surface to said second surface, wherein the work surface on the first surface and the side surface of the substrate, both constituting the edge, form an almost right angle or a slightly smaller angle than a right angle, said work surface being spaced from a remainder of said first surface; and positioning an orifice member with an orifice against said work surface.