Information technology. Office equipment. Method for the determination of toner cartridge yield for monochromatic electrophotographic printers and multi-function devices that contain printer components|Address plates, Stationery, Office machines, Erasing equipment, Drawing office equipment, Data processing, Office equipment, Document conveyors, Stamping equipment (stationery), Office furniture, Guillotines (paper), Fasteners (papers), Office management, Punches (paper), Document storage devices