The maintenance device is mainly for the problem of air-entering to the print head vertical and horizontal blank stripe printing, but it won't be helped for the problem of chip damage and electrical faults of the print head.
If your HP printer head is clogged, empty or loses ink volume over time, it will no longer print correctly.
Just try to use This smart tool kit to refill with ink into the printer head ,it may Save and Revitalize your print head.
Note: Do not mix the color when pouring ink to the funnel to refill ink into the printer head.
- Tubing if need to get into printhead
- 10ml Vacuum Syringe and Needle