PDF / X is an abbreviation of Portable Document Format eXchange, is a standard PDF that is optimized for printing applications.
Was developed by (CGATS) Committee for Graphic Arts Technical Standards.
Has the contents were eliminated as much as possible uncertainties, such as color and font on the print becomes a problem in the standard PDF.
Also in the PDF / X, and those with special emphasis on traditional printing process is PDF/X-1a, by providing the following constraints like, garbled, missing fonts, etc. No trouble when printing image prevents.
- use PDF1.3
- color is featured CMYK
- image is high-resolution images
- embedded fonts
- OPI ban
- specify the ICC profile printing conditions
- explicit trapping of file