High-yield toner cartridge delivers optimum text & graphics print quality in your Hewlett-Packard LaserJet Printers 2420, 2420d, 2420dn, 2430, 2430n, 2430tn & 2430dtn. Proprietary automated equipment & ASTM testing methods ensure superior performance from each & every cartridge produced. State-of-the-art, automated filling equipment ensures precise fill weights for each cartridge. Independent testing has verified that this cartridge functions fully until end-of-life while yielding the same or more pages than OEM cartridges. Cartridge yields approximately 12,000 pages.