Keep your kyocera laser printer running for longer and at optimum performance by using genuine kyocera laser toner which contains ceramic cleaning beads to ensure the printer drum is clean and particle free with smaller toner particles requiring less energy to fuse the toner has a faster warm up time and reduces energy consumption this toner cartridge is for use with the ecosys m2040dn m2540dn m2640idw printers to provide crisp text and sharp lines from the first page to the last and with a