Abstract: A device for neutralizing static electric charge on a surface comprising a support means, a plurality of resilient, flexible thin fibers having an electrical resistivity of from about 2.times.10.sup.3 ohm-cm to about 1.times.10.sup.6 ohm-cm., the fibers being supported by the support means in such manner that the fibers are oriented and extend in a uniform direction, in a brush like configuration from the support means so that the distal ends of the fibers may extend toward a surface which has a static charge which one wishes to neutralize. Preferably, the resilient fibers have a resistivity of from about 4.times.10.sup.4 ohm-cm. to about 4.times.10.sup.5 ohm-cm., and are arranged in a linear array of spaced discrete bundles of fibers in a conductive potting composition in the support holder. Preferably the fibers are made of a partially carbonized polyacrylonitrile fiber and the device may be used in an electrostatographic reproducing machine having at least one dicorotron charging device.

Abstract: A printing machine includes at least two grounded carbon fiber brush static eliminators mounted in a molded plastic baffle assembly that optimizes discharge characteristics. The eliminators are mounted such that one brush contacts sheets moving through the machine while the other brush remains out of contact with the sheets in order to minimize fluctuations in static reduction over machine life.