What factors lead to poor print quality?

running ink

ink doesn't adhere to the film

thin layer of white ink

Running ink:

1. ink quality: The chemical composition of the ink is crucial in determining how well it bonds with fabric fibers. These properties significantly impact the ink's ability to adhere to the fabric, ultimately affecting the quality of adhesion.

2. temperature before applying the powder: The air temperature during printing is crucial. Keep the room under 25°C, and set the pre-heat plate to 40-42°C. If either temperature is too high, ink may dry too quickly, affecting bonding. If too low, the ink may not cure properly or bond with the fabric.

3. film type: The quality of the film has a significant effect of absorbing the ink

4. ink level: Most of the time the ink level/ ratio needs to be between 75-80%

5. humidity: Humidity levels in the environment can also impact the drying and curing process. High humidity may slow down the drying/curing, affecting the ink's ability to adhere properly.

Ink doesn't adhere to the film:

1. The first thing to check is the heat applied to the oven to cure the powder. If it's too high, it can significantly affect the process by melting the ink and preventing it from adhering to the film.

2. film type and quantity

3. the surrounding environment, humidity level, and temperature

Thin layer of white ink

If the ink is being applied in thin layers and a nozzle check reveals missing or blurry lines, it likely indicates a nozzle clog. Try cleaning the head thoroughly manually by flushing the nozzles or soaking the head, but avoid using hot cleaning methods or water to flush the ink (since DTF ink cures with heat), as this can lead to severe clogs by turning the ink into rubber inside the nozzles. Replacing the printhead might be a last resort. Printheads generally have a limited lifespan, usually between 1 to 2 years, though some may last longer depending on usage and maintenance.