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  • KB180986423: How to create an EPL file for content proofing
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Esko Software Platform 16 introduces a new Proof for Content Approval ticket to make a content proof. Thought the color accuracy is not critical for a content proof, it is recommended to select an EPL which matches as good as possible, the used paper type. By doing so, you will avoid/minimize over inking.

Installing Esko Profiles (EPL)

An output device will have multiple or no EPL files (calibration set) depending on whether the printer model was selected or not during the installation of Proof Server Profiles (part of the Esko Proof Server DVD).

Using a standard EFI EPL (i.e., EPL files installed by the Proof Server Profiles installer) is the first and recommended option for content proofing. However, there is sometimes a need to create custom EPL files, e.g.: if no EPL is available for a certain resolution (a low resolution might be preferred for content proofs). This article describes the steps to create a custom EPL file.

Complaints and issues related to color accuracy are not handled by Esko support!

Procedure for the creation of a custom EPL file for a CT driver.

Measurement device: X-rite I1IO

In case no spectro is available

Follow the procedure How to change the resolution of an existing EPL file? in case no spectro is available.
This procedure should in first instance be used to change the resolution, NOT to avoid overinking. Creating a custom EPL file is the best way to avoid overinking!

  1. Open the Proof Client.
  2. Select the output device and go to the Media tab in the Property Inspector (right side positioned).
  3. Select any EPL file in the Calibration Set list.
  4. Open the LinTool by clicking the New Linearization and Profile... button.
  5. Click Yes in the Confirm window. This will copy all the output device settings to the Linearization device.
  6. In the Measuring device list, select the connected model.
  7. Select as Linearization intent, Proof.
  8. In the Media Type list, select a type describing the paper you're using.
  9. Fill in a Media name.
  10. Select the resolution you prefer (for content proofing you don't want to print with a high resolution).

    This is the internal RIP resolution.
  11. Select the Print mode you prefer.
  12. Select Bidirectional in Print direction.
  13. Make sure that the Color mode choice is CMYK.

  14. Click the Next button.
  15. Click the Print button to print the InkLimit per channel chart.
  16. Click the Measure... button to start the measure process of the chart.

  17. Click Next.
  18. Click the Print button to print the Linearization chart.
  19. Click the Measure... button to start the measure process of the chart.

  20. Click Next.

  21. Click the Print button to print the Total Ink Limit chart.
  22. Evaluate the printed chart. Lower the Initial TIL value in case of over inking (i.e., when the ink is not dry or dripping of the paper immediately after the print is made) and print again the chart (repeat this step if necessary).
  23. Click the Measure... button to start the measure process of the chart.

  24. Select Automatic TIL definition by measurement.
  25. Click Next.
  26. Click the Print button to print the Evaluation chart.

  27. Click the Measure... button to start the measure process of the chart.

  28. Evaluate the chart for over inking.
  29. Click Next.
  30. Click the Save & Finish button.

  31. Fill in a name to save the EPL.
  32. Verify if the EPL is located in the Esko Profiles folder (C:\ProgramData\Esko\Esko Profiles). If not, copy the EPL to this location and restart the Proof Server.

How to change the resolution of an existing EPL file?

When there is no EPL file available with a low resolution AND there is no spectrophotometer available to make a new one, then you can follow this procedure to change the resolution of an existing one.

  1. Download the EPLView utility here
  2. Copy the EXE to the proof server folder (e.g.: C:\Program Files\Esko\Esko Proof\Server > the location depends on where the proof server was installed).
  3. Double click the EXE file.
  4. Click the hidden button in the bottom left corner.

  5. This will unlock the resolution option.

  6. Change the resolution.

  7. If needed you can even change to a draft print quality (the available options depends from driver to driver).

    Avoid illegal output settings

    While the EPLView tool is great to modify an EPL, it doesn't prevent illegal choices like the LinTool does. You could, for example, select a resolution not supported for a certain media type (which can result in an empty output or error on the proofer panel). To avoid illegal output settings, you should always verify the chosen combination of settings in the LinTool!

  8. Save the EPL > File > Save as.
Article information
Applies to

Imaging Engine 16.x

Last revised02-Aug-18
Case Number