A new, unopened box of DocuPrint toner cartridges, likely for a Fuji Xerox printer. Toner cartridges are essential components for laser printers, enabling them to produce high-quality prints. The technology behind toner dates back to 1938 with Chester Carlson's invention of electrophotography, later commercialized as xerography by Xerox. Over the decades, toner formulations and cartridge designs have evolved significantly, offering increased efficiency, yield, and environmental friendliness. Fuji Xerox, a joint venture between Fujifilm and Xerox, has been a prominent player in the printing industry, known for its range of office equipment and consumables.