PDFlib 8 Windows COM/.NET Tutorial

Table 10.5 Compatible PDF/X input levels for various PDF/X output levels
PDF/X level of the imported document
PDF/X output level
PDF/X-1a:2001
PDF/X-1a:2003
PDF/X-3:2002
PDF/X-3:2003
PDF/X-4
PDF/X-4p
PDF/X-5g
PDF/X-5pg
PDF/X-1a:2001
allowed
PDF/X-1a:2003 allowed allowed
PDF/X-3:2002 allowed allowed
PDF/X-3:2003 allowed allowed allowed allowed
PDF/X-4 allowed allowed allowed allowed allowed allowed
PDF/X-4p allowed allowed allowed allowed allowed allowed 1
PDF/X-5g allowed allowed allowed allowed allowed allowed allowed 2 allowed 2
PDF/X-5pg allowed allowed allowed allowed allowed allowed 1 allowed 2 allowed 1,2
1. process_pdi( ) with action=copyoutputintent will copy the reference to the external output intent ICC profile.
2. If the imported page contains referenced XObjects, open_pdi_page( ) will copy both proxy and reference to the target.
This statement will retrieve a string designating the PDF/X conformance level of the imported
document if it conforms to an ISO PDF/X level, or none otherwise. The returned
string can be used to set the PDF/X conformance level of the output document appropriately,
using the pdfx option in begin_document( ).
Copying the PDF/X output intent from an imported document. In addition to querying
the PDF/X conformance level you can also copy the output intent from an imported
document:
ret = p.process_pdi(doc, -1, "action=copyoutputintent");
This can be used as an alternative to setting the output intent via load_iccprofile( ), and
will copy the imported document’s output intent to the generated output document,
regardless of whether it is defined by a standard name or an ICC profile. Copying the
output intent works for imported PDF/A and PDF/X documents.
The output intent of the generated output document must be set exactly once, either
by copying an imported document’s output intent, or by setting it explicitly using
load_iccprofile( ) with usage=outputintent.
10.3 PDF/X for Print Production 259