Diagnosis
The presence of streaks or horizontal bands of missing color on the HP ENVY Inspire 7955e is almost always caused by "dry-out" or air bubbles within the printhead nozzles. Because this model uses an integrated printhead system, the ink must pass through microscopic apertures to reach the paper. When the printer remains idle for more than two weeks, the ink at the nozzle interface evaporates, leaving behind a hardened crust of pigment and binder that physically blocks the ink flow. You can confirm this by printing a "Print Quality Diagnostic Page." If you see gaps in the cyan, magenta, or yellow blocks, the nozzles are partially occluded. If the gaps are consistent across the entire page, it indicates a systemic air lock in the ink delivery system. If the lines are sporadic or "scratchy," it is a localized clog. Standard cleaning cycles often fail because they only push a small amount of ink through; if the clog is solidified, the pressure is insufficient to breach the blockage.
How to Fix It
To resolve a stubborn clog that standard cleaning cannot fix, you must perform a targeted Deep Cleaning and a manual nozzle reset. Follow these steps exactly:
- On the printer's home screen, swipe down the control panel and select the Settings gear icon.
- Navigate to Printer Home > Tools > Print Quality.
- Select Clean Printheads. If the prompt appears, select Deep Clean or Level 2 Cleaning. This process uses a higher vacuum pressure to force ink through the nozzles.
- Once the cycle completes, do not immediately print a full document. Instead, select Print Quality Report.
- Examine the color blocks. If the streaks remain, do not run a third cleaning cycle immediately. Power off the printer and let it sit for 2 to 4 hours. This allows the ink saturated during the deep clean to soften the dried residue via osmosis.
- Power the printer back on and run one final Clean Printheads cycle.
- Print a final test page to verify that the color blocks are solid and devoid of white lines.
If That Didn't Work
- Manual Printhead Saturation: Remove the ink cartridges from the carriage. Locate the printhead contact area. Dampen a lint-free, non-abrasive cloth with distilled water (not tap water) and gently press it against the bottom of the printhead nozzles for 30 seconds. This manually re-hydrates the dried ink crust that the software cycles cannot reach.
- Ventilation Check: Inspect the top of the ink cartridges. Ensure the orange pull-tabs were completely removed and that the small air vent hole on top of the cartridge is not blocked by adhesive residue. If the cartridge cannot "breathe," a vacuum forms inside, preventing ink from flowing regardless of how many cleaning cycles you run.
- Cartridge Replacement: If the streaks are only appearing in one specific color (e.g., only Magenta), the cartridge itself may have a failed internal seal. Replace the specific HP 67 ink cartridge. If the problem persists across multiple new cartridges, the printhead assembly has likely suffered a permanent electrical or physical failure.
- Paper Calibration: Ensure you are using the correct paper settings in the HP Smart App. If you are using "Photo Paper" but the printer is set to "Plain Paper," the ink delivery volume is lower, which can make minor nozzle clogs appear as prominent streaks.
Heads Up
- Avoid running more than three consecutive cleaning cycles. Doing so can overheat the printhead elements and waste a significant percentage of your ink yield without providing additional benefit.
- To prevent future clogs, print at least one full-color page every 7 to 10 days. This keeps the ink fresh and prevents the nozzles from drying out.
- Always use genuine HP 67 cartridges. Third-party inks often have different viscosities and surface tensions, which lead to more frequent clogging and "bleeding" streaks on the ENVY Inspire series.
- Keep the printer away from direct sunlight or heat vents, as elevated temperatures accelerate the evaporation of ink from the nozzles.