← All symptomsSafety stop: Stop the process if there is smoke, an electrical fault, a strong unfamiliar odor, melting, cracked glass, or evidence that the material is not heat-rated. Follow the equipment and blank manufacturer’s safety instructions.
Prioritized checks
Starting order
Confirm or weaken each cause before changing the next variable.
1
Missing nozzles or ink-delivery issue
Evidence that supports it
- The nozzle check has gaps matching the band color.
Evidence against it
- A nozzle check and transfer print are clean.
Safe next actions
- Run the printer manufacturer’s nozzle check.
- Use only the documented cleaning procedure; avoid repeated uncontrolled cleanings.
2
Print-head alignment or paper-feed inconsistency
Evidence that supports it
- Bands are evenly spaced and repeat across different files.
Evidence against it
- The paper print is clean.
Safe next actions
- Run documented head-alignment and paper-feed checks.
- Confirm media type and platen-gap settings.
3
Uneven heat or pressure zone
Evidence that supports it
- A clean transfer develops a band in the same platen location.
Evidence against it
- The line is visible before pressing.
Safe next actions
- Map the press with an approved temperature method and pressure test.
- Escalate platen repair to qualified service.
Stop condition: Do not disassemble or electrically service a heat press unless qualified and authorized.