What is the warranty period for the HP DeskJet 3720 printer and its ink cartridges?
The printer hardware carries a 1-year limited warranty, while software media is covered for 90 days. Ink cartridges are warranted until the HP ink is depleted or the 'end of warranty' date printed on the cartridge is reached, whichever occurs first.
From the official HP Deskjet 3720 All-in-One Printer manual, page 3
Have a follow-up question?
Answers from the official manual.
Common questions