Epson DX5 printhead print patches
Print patches or banding can occur for various reasons in inkjet printing, including issues with the printhead, ink supply, media, or printer settings. Here are some possible causes and solutions to consider:
Clogged or damaged printhead nozzles: Check the printhead nozzles for clogs or damage, which can cause missing or uneven ink droplets. Clean the printhead according to the manufacturer's instructions, and run a nozzle check to confirm that all nozzles are firing properly.
Insufficient ink supply or pressure: Ensure that the ink cartridges or tanks are not running low or empty, and that the ink lines and filters are not clogged or kinked. Check the ink pressure and viscosity settings in the printer software or RIP, and adjust as needed for the ink type and media.
Inconsistent media feed or movement: Check the media for wrinkles, creases, or other defects that could affect the ink adhesion or movement. Ensure that the media is loaded and aligned correctly, and that the platen or rollers are clean and free of debris or wear.
Incorrect printer settings or profiles: Check the printer settings and color profiles for the specific media and ink being used, and adjust as needed for optimal print quality. Use a color calibration tool to create or verify the ICC profile for the printer and media combination.
Environmental factors: Ensure that the printer is located in a stable environment with consistent temperature and humidity levels, and that the ink and media are stored and handled properly to avoid drying or contamination.
By systematically checking these potential causes, you may be able to identify and resolve the issue with your print patches. If the problem persists, you may want to consult a qualified technician or service provider for further diagnosis and repair.