- GREAT SAVINGS! Save up to €180 per purchase compared to original cartridges.
- PLUG & PRINT! Installs perfectly in your HP 8640 printer.
- 2-YEAR MONEY-BACK GUARANTEE! It’s a no-risk purchase.
- HIGHLY RECOMMENDED BY CUSTOMERS! ⭐️⭐️⭐️⭐️⭐️
Smart Ink offers high-quality replacement cartridges for your HP OfficeJet Pro 8640 printers with a 2-year warranty and 24/7 customer support.
Using our Smart Ink compatible cartridges in your OfficeJet Pro 8640 printer does not void the printer’s warranty.
What you need to know before the installation:
- Do not touch the chip or the ink port, which can result in clogs, ink failure and poor electrical connections.
- Avoid mixing cartridges from different suppliers simultaneously – the printer may not recognize them properly.
- If the printer has not been used for a long period of time, we recommend running the printhead cleaning cycle up to 3 times to remove ink residue (refer to the printer manual).
- The Smart Ink team strongly recommends using only high-quality ink from one producer to extend printer life.
- Turn on the printer and open the cartridge access door. Wait until the carriage stops moving before you continue. This should take only a few seconds.
- Take off the yellow tape.
- Do not remove the protective seal covering the ink port.
- Match the label color with the color on the carriage. Then install the cartridge into the corresponding slot.