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Frequently asked questions
- 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.
- 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.
- 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.
- 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.
- 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.
- Print head is not positioned perpendicularly above bed. Readjust head.
- Incorrect vertical calibration. Recalibrate.
- Bridge is crooked. Straighten bridge.
- 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.
Original resolution too low. Resolution should be between 190 and 210 dpi (100% scale).
One or more dampers are broken. Replace broken dampers.
Consult flow diagram in manual. Procedure found there also helps prevent bleeding.
No. Inks need sufficient time to penetrate surface pores, otherwise lettering will be poorly defined and colouring less intense.
Yes. The only thing you need to do is coat the DuraSeal plate using a coating bar or Foduktor (roller coater) with CopyLon photo-emulsion. Please find more information in our user instructions.
A yellow-tinted, Mesh 120 screen stretched at an angle of 22° in combination with an indirect stencil.
It is important that sufficient ink be applied to the plate. We recommend squeegeeing the screen twice using PoroPrint before printing. Repeat if necessary.
The pH value in the sealing bath can rise sharply when there are a lot of plates in the tank. The temperature can also drop because multiple plates are being immersed in the bath at the same time. This is when it is most likely that colours will bleed out. It is recommended that you move plates to and fro for the first minute of the sealing process. The pH value of the water in the tank is also an important factor in this respect. The pH value should remain between 5.5 and 6.3. If the water becomes too acidic, then it needs to be neutralized using sodium carbonate, and if too alkaline, using acetic acid. We stock pH test kits and litmus paper in our product range for this purpose. Sealing salt can also be added to create a buffer solution that helps keep the acidity level constant and prevent bleeding.