HP Deskjet 3940 ink cartridges recycled by Red Bus Cartridges in the UK. Guaranteed to match the quality and page yield of an original at a much lower price, they come with free next working day delivery. HP Deskjet 3940 inkjet printers are among the most popular office printers on the market today. We offer both genuine original HP ink cartridges and cheaper alternatives- our recycled original HP inkjet cartridges. We take a used genuine inkjet and to put it simply- we clean, repair, refill, test and pack. So the HP inkjet cartridge you receive is a recycled original and fits and works in your HP Deskjet 3940 printer just like the original. You can save some money and help protect the environment in the process! Below are all the ink cartridges available that are guaranteed to work in your HP Deskjet 3940 printer. We display the ink dosage they contain along with the price so that you can make the best decision when purchasing your HP Deskjet 3940 ink cartridges today.