HP DeskJet 640

HP 93 Tri-color
HP 93 Tri-color. Printing colours: Cyan Magenta Yellow Page yield: 220 pages Print technology: Inkjet. Packaging width: 11.405 cm Packaging depth: 3.632 cm Packaging height: 10.287 cm

HP 51649A (HP 49) Tri-Color Inkjet Cartridge
51649A Tri-Color Inkjet Cartridge compatible with the HP DeskJet 350/ 600/ 610// 612/ 630c/ 632c/ 640c/ 642c/ 648c/ 650c/ 656 cvr/ 656c/ 660/ 670/ 672c/ 680c/ 682c/ 690c/ 692c/ 693c/ 694c/ 695c/ 697c/ DeskWriter 600/ 660 Also fits some Apollo/ Apple/ and Sony. The use of compatible supplies does not void your printer warranty.

HP C6614DN (HP 20) Black Inkjet Cartridge
C6614DN Black Inkjet Cartridge compatible with the HP DeskJet 610/ 612/ 630c/ 640c/ 642c/ 648c/ 656/ Fax 1010/ 1020/ 1040/ 1050/ 925xi.