Application Sheet

819: Drawing of Print Quality Problems With Ink Jet Printing On UPVC Extrusion

Print Quality Problems With Ink Jet Printing On UPVC Extrusion

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Problem

High voltage static charges generated on uPVC profile during the extrusion process present a number of problems for ink jet printing systems:

  • Attraction of dust to the surface being printed
  • Deflection of the ink jet, resulting in poor print quality
  • Over attraction of ink, leading to feathered edges
  • Electronic failure of ink jet printing equipment
  • Contamination of the directional deflector plate leading to lost production time due to cleaning.

Solution

The positioning of a powerful Model 915 ionising bar prior to the print head will neutralise the static charge and ensure:

  • No dust attraction
  • Improvement of print quality - eliminates feathering and ink deflection
  • No electrostatically generated electronic failure
  • A clean direction deflector plate - reduced cleaning and improved productivity

The same principle will apply to other chargeable surfaces which require ink jet printing.

NB: A model 940BE nozzle can be used as an alternative to a model 915 ionising bar.