HP has a new lockout firmware to stop any CIS from working. We have found that using our refillable cartridges or refilling the HP cartridges works the best.
- Our ink gives you the superior image quality you need and provides light resistance and exceptional quality and durability.
- Redesigned ink system cartridges with our exclusive air pressure chamber to stop insufficient air pressure and allow cleaning of the print head.
- 4 - Prime Tools should you run the ink tank out of ink.
- The system is pre-filled with of our Ultra Pro® Pigment ink. (OEM Quality)
![Compatible Snap On Prime Tool 4 Colors For HP DesignJet 80, 81, 83 90 Printheads [Large]](https://www.inkproducts.com/images/T/HP%2084-85-90%204%20Color-03.png "Compatible Snap On Prime Tool 4 Colors For HP DesignJet 80, 81, 83 90 Printheads [Large]")
