Abstract: An electric field is established in the gap between an imaging surface and an opposing electrode surface inducing movement of particles from suspension within a developer in the gap toward the opposing electrode surface. A voltage pattern generated on the imaging surface causes deposit of the developer particles in image relation on the opposing electrode surface or on a printing surface positioned adjacent thereto, by a repulsive action between the imaging surface and the particles having an electrostatic charge of the same polarity.

Abstract: This specification discloses an improved electrophotographic image receiving plate having a base including one or more electrophotographic layers and an array of electrically discrete conducting elements arranged in electrical contact with one of the photoconductive layers, and an electrically conducting grid arranged adjacent to but insulated from each of the discrete elements. In one form the grid surrounds the discrete elements and is coplanar therewith. In another embodiment the grid is applied to an insulating layer deposited over the discrete elements. In use, a potential difference is applied between the grid and the discrete elements to create an electric field which develops an image on the discrete elements.