Enjoy excellent printing with our Genuine and Compatible Toner Cartridges and drum units for your Okidata B 420DN Monochrome Printer. All of the Compatible and Genuine Okidata toner cartridges that we sell go through a vigorous inspection process before they are shipped to ensure outstanding printing results. Our OEM / Genuine and Compatible Okidata 43979101 laser toner cartridges; our Genuine and Compatible Okidata 47979001 Drum Unit Cartridges; and our Genuine and Compatible Okidata 43979201 and 43979215 high yield toner cartridges combined with your Okidata b420dn workgroup printer will create stunning printouts with bold text at noteworthy speeds. Each Okidata toner cartridge and drum unit has up to a 2 year shelf life for definitive convenience and performance. We guarantee exceptional print quality from these Compatible and Genuine Okidata cartridges or we will refund your money within 90 days of purchase.