KB75767900: Automation Engine - Missing halftone information in Normalized PDF file

Summary

A normalized PDF file is a PDF file that is conform to a set of rules. One of these rules is having halftone information stored in its XMP data. Unfortunately it happens that a normalized PDF file is altered outside your Esko workflow, where this information is overwritten and causes trouble when importing back in your Esko software.

Symptoms

PackEdge:

When opening a Normalized PDF in PackEdge, the following error pops up:

"Missing halftone information in Normalized PDF file. 
Normally Normalized PDF files always have screening information".

Automation Engine:

ERROR - Missing halftone information in Normalized PDF File.

Solution

What is necessary is for the halftone information to be correctly rewritten in the XMP data of your normalized PDF.

• Use an Esko program to edit the Normalized PDF file. PackEdge, Automation Engine or DeskPack PDF Import plug-in.
  1. PackEdge: Reopen and save the file in PackEdge
  2. Automation Engine: Launch the "Adjust PDF Screening" task
  3. DeskPack: Open the Normalized PDF file in Illustrator and export it again as a Normalized PDF.
     
     

Retrace to where the PDF could have been altered. If for example this has been altered by using Adobe® Illustrator®, note that we have a free and simple solution called the Data Exchange plugin.

Data Exchange Plug-in that acts as a bridge between Adobe® Illustrator® and all Esko applications. You can find the Data Exchange plug-in on our website.

https://www.esko.com/en/Support/DownloadsAndLicenses/free-software/