Thank you for the detailed information you have provided! Based on your description, the nozzles on the Epson L3250 printhead are likely to be clogged or misaligned, especially since the problem repeats every 6 lines (indicating a pattern consistent with clogged nozzles).
I don't know if your Epson L3250 has a display, as I once had an Epson printer that had a touch screen that you could push buttons on, and Epson has built-in functions like deep cleaning, preliminary cleaning, etc. that automatically clean the printer nozzles when pressed.
But I will give you some suggestions in Windows that I hope will help you without problems.
- Perform advanced printhead cleaning.
- Open Windows Settings (Win+i) -> Bluetooth and Devices -> Printers and Scanners.
- Select your Epson L3250 -> Click Printing Preferences.
- Go to the “Maintenance” tab -> Select “Head Cleaning”.
Select "Color ‘ and ’Black ” for cleaning respectively (repeat for both).
- After cleaning, print the Nozzle Check Pattern:
On the same Maintenance tab -> click Nozzle Check.
If the test page still shows gaps/missing lines, continue with Step 2.
- Manual printhead alignment
Clogged printheads can cause misalignment:
- On the Maintenance tab -> select Printhead Alignment.
- Follow the on-screen instructions to align the printheads using the printed alignment page.
- Deep cleaning (if basic cleaning fails)
Please note: This consumes more ink. Use only 2-3 times if necessary.
- On the Maintenance tab -> Deep Clean -> Run Color and Black.
- Wait 30 minutes after cleaning (to allow ink flow to stabilize) -> Print another nozzle check.
- Verification of ink and driver settings
- Ink quality check:
Even though OEM inks are being used, make sure the ink cartridges are not expired (check the date on the cartridge label).
Gently shake the cartridge horizontally to redistribute the ink (avoid hard shaking).
- Reinstall the Driver:
Uninstall the current driver via Settings -> Printers and Scanners -> Delete Device.
Download the latest driver from the Epson L3250 Support page -> Reinstall.
- Physical check (last resort)
If the software step fails:
- Dampen a lint-free cloth with distilled water (do not use alcohol).
- Open the printer cover -> Locate the printhead (refer to your Epson manual for instructions).
- Gently wipe the printhead's metal contacts and nozzles. Do not touch the circuit board!
- Restart the printer and retest.
If all steps fail
Persistent blocking may indicate some of the following important problems:
(1) Hardware failure (e.g., damaged print head).
(2) Clogged ink passages (requires professional repair).
Contact Epson Support directly for repair options, as physical repair is beyond the scope of troubleshooting. Mention the error pattern (“repeat every 6 lines”) to speed up diagnosis.
Please note: Print head cleaning consumes ink. If the problem persists after 3 cleanings, avoid further attempts to avoid wasting ink.
I sincerely hope that the above information will help you!