Abstract: A method for installing a replacement optical photo conductor cylinder in a recycled toner cartridge having a frame for an electrostatic copier or similar device where the original photo conductor is permanently installed in the frame forming a part of the toner cartridge. The method includes the steps of removing the original cylinder by cutting it into as many segments as is necessary, providing a bushing within the original non-driven socket in the frame, providing the non-driven end of the replacement cylinder with a cap having a bore therein, inserting the replacement cylinder into operative position in the frame, and inserting a headed pin through the bushing and the cap to provide a bearing.

Abstract: A lubricant for wiper blades used to remove residual toner particles from a photoconductive surface comprising a finely divided fluoropolymer and a binder resin typically polyvinylpyrollidinone, applied as a coating using an evaporable vehicle.

Abstract: A gapping device for maintaining a predetermined spaced relation between a rotating photoconductor sleeve and a rotating developer sleeve in an electrophotographic device. The device includes an exposed contact surface which is free of sharp edges to prevent or substantially reduce scoring in the non-print coated areas of one of the sleeves to maintain the gap at constant width.

Abstract: A two-layer resin coating system for protecting surfaces against ultraviolet light. An inner layer includes both an ultraviolet absorber and an optical brightener. An outer layer includes sufficient ultraviolet absorptive material to prevent transmissions sufficient to cause the optical brightener in the inner layer to glow or reflect light which is perceived as yellow.

Abstract: A lubricant for wiper blades used to remove residual toner particles from a photoconductive surface comprising a finely divided fluoropolymer and a binder resin typically polyvinylpyrollidinone, applied as a coating using an evaporable vehicle.

Abstract: A lubricant for wiper blades used to remove residual toner particles from a photoconductive surface comprising a finely divided fluoropolymer and a binder resin typically polyvinylpyrollidinone, applied as a coating using an evaporable vehicle.

Abstract: A two-layer coating system blocks ultraviolet radiation up to and including 400 nanometers, the upper end of ultra violet light. An inner layer blocks radiation from about 375 nanometers to 400 nanometers. An outer layer absorbs radiation up to 375 nanometers.

Abstract: A flexible elongated roller charging blade for use as a replacement in the reycling of toner cartridges used in photoelectric copiers and printers. The blade has a first surface having a semiconductive coating, and a second opposite surface coated with an adhesive to apply to the surface of an initially installed charging blade.

Abstract: A frangible tear strip for toner cartridges used in electro-photographic copying devices, in which bursting strength is increased without making it more difficult for the user to longitudinally tear the strip to create an opening for passage of toner prior to use. This is accomplished by providing multiple areas of transverse reinforcement of the strip either by increased local area fusing of the material, or the lamination of transversely extending reinforcements at spaced intervals. In a preferred embodiment, the reenforcing material extends the entire axial length of the seal. In a further embodiment, the reinforcing material includes a layer of foam material having a rectangular opening overlapping a corresponding opening in a toner cartridge.

Abstract: A flexible conductive coating for application to an elastomeric charging blade pressed against the developer roller in an electrostatic printing apparatus to improve the contact of the particulate toner with the developer roller. The coating serves to improve the uniformity in the charge distribution of the different sized toner particles in the toner, to improve the repeatability of image density and decrease ghosting caused by the developer roller. The coating formulation comprises an aqueous or solvent based elastomeric material containing a conductive material disposed in its body to create conductivity. The coating may be directly applied to the operative surface of the charging blade, incorporated into the body of the blade during manufacture, or applied to the operative surface of the blade using an adhesive strip.