ISO 15930-4:2003 Preview
Graphic technology -- Prepress digital data exchange using PDF -- Part 4: Complete exchange of CMYK and spot colour printing data using PDF 1.4 (PDF/X-1a)
This standard was last reviewed and confirmed* in 2015.
*Therefore this version remains current
ISO 15930-4:2003 specifies the use of the Portable Document Format (PDF) Version 1.4 for the dissemination of complete digital data, in a single exchange that contains all elements ready for final print reproduction. CMYK and spot-colour data are supported in any combination.