Color Alignment and White Smudges: Troubleshooting a Kornit (Storm II) DTG Machine

White Smudges: Addressing Print Quality

The user initially faced white smudges on the top and bottom edges of the design. Switching the printhead's print direction from bidirectional to unidirectional helped resolve one edge but not the other. The issue resembled a bleed of the white layer into the pre-treatment spray, resulting in a blurry appearance. To further troubleshoot, the user contemplated adjusting the motor speed of X1 and X2.

Possible Solutions:

• Verify if the material type (cotton/poly mix) affects the smudging.
• Ensure the machine is restarted several times, as a user reported a spontaneous fix after multiple restarts.
• Experiment with different materials and monitor the white ink levels for future reference.
• Investigate motor speed settings for X1 and X2 to potentially reduce smudging.

Color Misalignment: Fine-Tuning Registration

The second challenge involved misalignment of colors, particularly magenta and yellow, creating a 3D glasses effect. Running the registration wizard didn't resolve the issue, prompting the user to seek alternative solutions.

Possible Solutions:

• Explore additional wizards or settings to correct color misalignment.
• Check for any torquing or misalignment of the magenta print head, considering physical adjustments if necessary.
• Ensure proper calibration of position and registration using available wizards.

Additional Insights and User Progress

Additional information from the user's updates revealed insights and progress in resolving the issues:

• A thorough nozzle test confirmed all nozzles were functioning properly.
• Consistent color offset effects were observed across all nozzles, eliminating the possibility of missing nozzles.
• The user identified the motor speed settings but encountered challenges modifying them, even in technician mode.
• The discovery of an unplugged connector (vacuum valve sensor power) and its reconnection had no impact on the tests.
• Contemplation about the magenta print head being torqued led to the user's decision to order a replacement.

Replacing the Print Head: A Pivotal Step

After exhaustive troubleshooting, the user decided to replace the magenta print head, a costly but potentially decisive step. The meticulous process of replacing the head and subsequent purging to eliminate air from the system took about 45 minutes to an hour.

Outcome:

• Nozzle tests were conducted until favorable results were achieved.
• Calibration using wizards addressed position and registration issues.
• Testing various designs confirmed a significant improvement in print quality.

Resolving Challenges in Kornit DTG Printing

The user's journey from identifying issues to replacing the print head showcases the complexity of troubleshooting a Kornit DTG machine. While the lack of documentation poses a challenge, users can benefit from community forums, experimentation with settings, and seeking professional support when needed.

For more in-depth discussions and technical insights, consider following BCH Technologies' YouTube Channel and exploring their Tech blog. Additionally, locals can visit the Greensboro, North Carolina location for hands-on assistance.

Troubleshooting and mastering DTG printing may be challenging, but with a combination of technical know-how and community support, users can achieve optimal print quality.