Q solutions blog

Expert system for print ready pdf’s

Print ready pdf’s on the fly. For a magazine we developed a super easy expert system that makes any file print-ready at the push of a button. Pages no longer need to go through a specialist for technical checks and adjustments, leaving designers more time for the deadline. This makes the process very flexible and efficient.

Discussions with designers revealed that at the end of the process – when there is already the necessary stress to meet a deadline – specialists have to perform a number of actions to make the file technically ready for the printer. They had to manually check and export the files, and identify and adjust technical problem manually. This took a lot of time and thus also created additional pressure for the designers because the deadline for this check had to be moved forward. Couldn’t this be done smarter?

We developed an expert system that detects and solves all possible problems so that each file automatically meets all these requirements. Super fast and automatically. All a designer has to do is create a PDF of the design and submit it to the expert system. Within seconds, the designer receives the print-ready version of the file.

Next we build a pinboard on top of this.

When a PDF is received, the system makes an analysis of the document. For this, we use Callas PDF technology. Only when images are too low resolution or fonts are not embedded in the file can the system not proceed and the designer is asked to include the appropriate source files. In all other cases, the system continues with the print-ready process.

To get the colors right, the system uses the European Color Initiative standards for various printing techniques and paper types such as offset, gravure and newspaper printing. These are defined in so-called ICC (International Color Consortium) profiles. All the (common) ECI ICC profiles are supported by the expert system. We only need to define which profile is required for the file to print perfectly. The system checks whether all color settings meet these requirements.

Then we look for possible problems. For this we use the Ghent WorkGroup (GWG) standards. Depending on the printing technique, a document that is ready for printing must pass some 80 to 100 checkpoints. For each point, we have defined what needs to be done to resolve it. So if a page does not meet the standards, it is automatically adjusted. For example, if the GWG standard requires black text with a font size smaller than 12 points to be on overprint and the expert system encounters black text smaller than 12 points which is not on overprint, the expert system will make sure that this text is put on overprint. Thus, 80-100 different checks are done and fixed when needed.

For the users, seeing the final result is hugely important (WYSIWYG). Therefore, color management and transparency flattening takes place in the expert system so that designers can immediately view the print-ready PDF.

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