Genuine OEM HP OfficeJet 4631 Ink and Supplies

The HP OfficeJet 4631 takes HP 61 black and tri-color ink. A mixed pack pairing HP 61XL black with HP 61 color gives black a higher yield but does not increase the standard color cartridge's capacity.

Toner Buzz carries genuine HP 61 packs for the 4631, including standard black-and-color and mixed-capacity combinations. Compare black capacity between those packs, or choose the tri-color two-pack when you need color ink and an extra color cartridge.