It is possible to retain much of the print quality of the genuine Canon 3839A003AA by carefully remanufacturing the empty units. In addition to refilling used original Canon EP52 toners, you can also replace many worn parts with compatible alternatives, giving the cartridge more life.That is exactly what our chosen partners have done with these remanufactured Canon EP-52 toner cartridges, allowing them to produce another estimated 10,000 prints before they need professional attention again. Despite the efforts of our manufacturers, each remanufactured Canon 3839A003AA still comes with a 100% guarantee, leaving you with nothing to worry about.