3-pk 27&28 Ink for HP Deskjet 3320 3420 3520 3620 3650 3740 3745 3840 5652 5655 | eBay
Amazon.com: HP 56 Black Ink Cartridge | Works with HP DeskJet 450, 5000, 9600; PhotoSmart 7000; OfficeJet 4000, 5000, 6110; Digital Coper Printer 410; PSC 1000, 2000; Fax 1240 Series | C6656AN : Office Products