Kajar This parameter will be available with the release of Jhove 1. Version information in the document catalog dictionary, if present, is properly formed. Documents created as PDF 1. XMP data, if present, are well-formed. Amazon Second Chance Pass it on, trade it in, give it a second life.
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Unfortunately this also means that it is very easy to create PDF files that are completely useless in a prepress environment. The solution to this problem is to define a set of rules that forbid the use of certain PDF functions that are irrelevant for printing purposes and to enforce others that do improve its usefulness in prepress.
All color data must be grayscale, CMYK or named spot colors. Compliant files cannot contain music, movies or non-printable annotations. If there are annotations sticky notes in the PDF, they should be located outside the bleed area.
Transfer curves cannot be used. If the file is to be printed with bleed, a BleedBox must be defined. The file needs to contain an output intent which describes the intended printing condition. The output intent is either: an ICC color profile.
Profiles can be embedded or referenced. The version simply came along because some newer software applications no longer supported the older PDF 1. This standard was developed in Germany and Switzerland.
Its use also seems to be largely restricted to those countries. There are standard for exchanging files for commercial printing, newspapers, packaging and digital printing.
If you want to get absolutely perfect PDF files for the type of jobs that you print, head over to the GWG site and check out their specifications. In a lot of countries, the national trade organizations recommend the use of the GWG standards to exchange files.
It was based on PDF 1. Things are already complicated enough as they are. Thank you!
The PDF/X-1a file format