Abstract: An electrically conductive web for safely and quickly discharging static electricity accumulated on personnel is disclosed. The web comprises a semi-conductive polymeric surface layer, which is in electrical contact with a conductive foraminous layer. The relative conductivity of these layers result in desirable electrical discharge characteristics. The composite structure may be bonded to a suitable supporting substrate and suitable electrical connection between the conductive foraminous layer is made with an electrical ground. Charged personnel coming into contact with the semi-conductive surface layer have their static charge quickly and safely discharged to ground potential.

Abstract: A device for cleaning foreign material from at least one surface of a sheet including at least one low durometer sheet cleaning roller having a tacky peripheral surface. The surface of the sheet to be cleaned is biased against and moved generally tangentially across the tacky peripheral surface of the cleaning roller with rolling contact therebetween so that foreign material on the surface of the sheet will be adhered to the tacky surface of the cleaning roller. The tacky surface of the cleaning roller is in turn cleaned by bringing into rolling contact therewith a surface on a roller cleaning member (which surface may be provided by the adhesive on a length of tape) having a higher surface tack than the cleaning roller. In one embodiment of the device the roller cleaning member is periodically passed over the cleaning roller by the operator of the device, whereas other embodiments automatically pass the roller cleaning member over the cleaning roller during each cycle of the device to clean a sheet.