Support – Polychromal products

Black lettering bleeds into coloured backgrounds. Why is this?

• Black lettering and lines should be 100% K (black) only, rather than full-colour CMYK.
• Drying air pressure is too low. Increase air pressure.
• Too much ink on surface. Increase gamma value.
• If none of the above resolves the issue, then add a white border around black lettering and lines.

Coloured lettering bleeds into coloured backgrounds. Why is this?

• Drying air pressure is too low. Increase air pressure.
• Too much ink on surface. Increase gamma value.
• If none of the above resolves the issue, then add a white border around coloured lettering and lines.

Lettering, lines and images on blank backgrounds dry inwards from edges and do not penetrate into the material's pores properly. Why is this?

• Add a 0.5 mm border around lettering and lines using 1% K (black). We actually recommend doing this all the time to prevent numerous problems that may occur when drying.
• Drying air pressure too high. Reduce air pressure.
• Gamma value too high. Reduce RIP gamma value.
• Ambient temperature too high. This should be between 18 and 24 °C.

Light colours disappear or become less distinct after sealing. Why is this?

• The transparent channel probably didn't work properly while printing. Perform a nozzle test.
• Drying air pressure too high. Reduce air pressure.
• Gamma value too high. Reduce RIP gamma value.
• Ambient temperature too high. This should be between 18 and 24 °C.

Image is smudged. Why is this?

• Bottom of print head is dirty. Carefully clean the print head by dabbing head with materials intended for this purpose.
• Print head gap is incorrectly adjusted. Set this to 1.2 mm.
• Dryer angle is incorrectly adjusted and air pressure may also be set too high. Adjust dryer angle and reduce air pressure.

Area of contact between two colours is not sharp, but blurred (colours overlap). Why is this?

• Print head is not positioned perpendicularly above bed. Readjust head.
• Incorrect vertical calibration. Recalibrate.
• Bridge is crooked. Straighten bridge.

Dithering is visible in print. Why is this?

• Transparent channel didn't work while printing. Perform a nozzle test.
• Print head is not positioned perpendicularly above bed. Readjust head.
• Drying air pressure too high. Reduce air pressure.
• Incorrect vertical calibration. Recalibrate.
• Bridge is crooked. Straighten bridge.

Full-colour images are blurred. Why is this?

Original resolution too low. Resolution should be between 190 and 210 dpi (100% scale).

There are patches, drips and dirt on right-hand edge of plate. Why is this?

One or more dampers are broken. Replace broken dampers.

What should I do if one or more nozzles are blocked?

Consult flow diagram in manual. Procedure found there also helps prevent bleeding.