The HP DeskJet 920C uses two compatible ink products: the HP 15 (C6615DN) in black, rated at about 840 pages, and the HP 78 (C6578AN) in tri-color, rated at about 710 pages. Both are standard capacity. The same ink also works with the DeskJet 940C, DeskJet 3820 and OfficeJet 5110. Same-day shipping on most orders.
