Upgraded Printhead Seals ONLY for T and Z Models

Includes: -12 custom printhead seals compatible with all HP 70, HP 72 and HP 73 printheads If you own a T or Z printer, you've almost certainly seen this message: Printhead replacement incomplete. Restart it. And you can't print anything, because the printer isn't happy. This kit will save you hundreds of dollars on replacement printheads and ink cartridges.  Demonstration Video - How to Use *Ink starvation of the printhead caused by poor seal at printhead port* This is the main reason you see the "printhead replacement incomplete" message. Here's what happens: The printhead is starved for ink, fails to put ink through the drop detector -> results in failure   to complete print system setup, and the printer returns the "printhead replacement incomplete" message. You've probably endured the long, annoying process of getting the printer to accept printheads. Printheads which may be perfectly good, but due to worn seals on the ink tube system, the printer cannot accept the printheads. The seals in this kit solve that problem, permanently.  A few considerations: -If a printhead has been starved of ink for a long time, it may have burned itself out by printing with air instead of ink. If this is the case, that printhead will not recover with the installation of new seals. -Even if a printhead has been starved for only a short period, if the internal ink diaphragm has deflated too much, it will sometimes not allow ink to re-inflate it, and the printhead will remain permanently starved. -Sometimes the electrical connection between the printhead and the carriage is poor. Make sure to clean off the printhead contacts as well as the contacts on the carriage. If either of those surfaces feels tacky, you've still got cleaning to do. -If the drop detector sensor is obscured by ink overspray, it will not properly detect the ink droplets, and the printer will not complete print system setup even if the printheads are working with perfect quality. The sensor may require cleaning. Compatible printers: HP Designjet T610 HP Designjet T1100 HP Designjet T770 HP Designjet T1200 HP Designjet T1120 HP Designjet T620 HP Designjet T790 HP Designjet T795 HP Designjet T1300 HP Designjet T2300 HP Designjet Z2100 HP Designjet Z5200 HP Designjet Z3100 HP Designjet Z3200 HP Designjet Z5400 HP Designjet Z2600 HP Designjet Z5600 HP Designjet Z6 HP Designjet Z9