Users in small and medium businesses, users in large businesses and enterprise environments who want to produce professional quality colour laser documents. Get the best results out of your HP Color LaserJet printing system. Chemically-grown toner formulas in HP 641A LaserJet Toner Cartridges work with your printer to deliver accurate, consistent colour and reliable, cost-effective performance.Compatible Printers: HP Color LaserJet 4600 N, HP Color LaserJet 4650 N, HP Color LaserJet 4600 DTN, HP Color LaserJet 4650 HDN, HP Color LaserJet 4600, HP Color LaserJet 4650 DTN, HP Color LaserJet 4650 DN, HP Color LaserJet 4600 DN, HP Color LaserJet 4600 HDN, HP Color LaserJet 4650, HP Color LaserJet 4650 Series, HP Color LaserJet 4610, Canon LBP-2510, HP Color LaserJet 4610 N, Canon LBP-85