The HP DeskJet 722C uses compatible ink: HP 45 (51645A) black ink, rated at about 1,100 pages, and HP 23 (C1823D) tri-color ink, rated at about 690 pages. Both are standard capacity. The same supplies also fit the DeskJet 710C, DeskJet 712C, and DeskJet 720C. Same-day shipping on most orders.
