Conductive Ceramic Coated Roller
Alumina used for the coating is very cut and abrasion resistant and is usually harder (Rc 55-60) than a steel knife blade. The inert ceramic surface will not erode due to direct exposure of the corona, although the sealer can be affected somewhat. Alumina is very thermally conductive and the allowable corona power level is typically twice that of organic coverings for the same roller dimensions. Cover thicknesses are typically from 100 to 200 microns.