Patent ID: 6081286
Filing Date: 2000-06-27
Classification: B41J

Abstract:
Apparatus for generating electrostatic charge images on a receptor surface arranged to move longitudinally thereof, said appratus comprising:a solid dielectric member having first and second sides;at least two sets of generator electrodes substantially in contact with the first side of the solid dielectric member and extending transversely with respect to the movement of the receptor surface, each set of said generator electrodes being displaced longitudinally to all other sets, said generator sets being electrically connected so as to be excited in parallel;at least two sets of control electrodes substantially in contact with the second side of the solid dielectric member and extending angularly with respect to the generator electrodes, the control electrodes in each set having apertures, including end print apertures on each control electrode, aligning with generator electrodes, the control electrodes in each set being so arranged that they align longitudinally with the electrodes in all other sets of control electrodes, and the end print aperture of each control electrode is offset laterally from the end print aperture of the next adjacent longitudinally spaced control electrode, the remaining apertures of each control electrode being interleaved in a similar manner to the end print aperture with the remaining apertures of its next adjacent longitudinally spaced control electrode;each set of control electrodes being electrically isolated from control electrodes in any other set.