Toner Tech- High Yield Remanufactured Toner Cartridge Replacement for HP Q6470a/ HP 3600 Black (Black Only) The Original Leader in Remanufactured Toner Cartridge. Made in the USA. 1% of All Sales Proceeds Goes to ConservationFund.org to Help With Environmental Projects in the USA. Replacement Part Number: Q6470a Page Yield: (Black) 6,000 pages at 5% coverage. (Color) 4,000 pages at 5% coverage. Compatible With: Hp Color LaserJet 3600, 3600n, 3600dn Series Printers.