Print head for an electrostatic image

An electrostatic print head comprising firstly at least one row of individual electrodes disposed at a regular pitch and organized into n groups which are shared between two different networks, with the electrodes occupying the same positions in the various groups of a given network being interconnected, and secondly at least one set of counterelectrodes running parallel to the individual electrodes and each attributed to at least one group of the adjacent electrodes in such a manner as to create a latent image on a dielectric recording medium running over said electrodes and said counterelectrodes by ion discharge between at least one of said electrodes and at least one of said counterelectrodes respectively raised to high voltage potentials of opposite polarity by high voltage control pulses, the electrostatic print head including the improvement of a rotary coupling electrode made of a conductive material and raised to a direct potential of average voltage having the same polarity as the high voltage pulses applied to the counterelectrodes, said coupling electrode being pressed against the recording medium level with the electrodes and the counterelectrodes and on the opposite face of the recording medium to said electrodes and counterelectrodes.