pdfx , trim size and margins

Question

I'm using scrbook with forced margins and pdfx to produce PDF/X-1a compliant documents for the publisher.

pdfx resizes the document and puts the trimed document in the bottom left corner. I'm not sure how the margins are kept or how the publisher will trim the printed document eventually.

Can you shed some light on this subject?

Here is a simple example of what I'm doing:

\documentclass[paper=6in:9in,pagesize=pdftex,
               headinclude=on,footinclude=on,11pt]{scrbook}
\areaset[0.50in]{4.5in}{8in}

\usepackage{lipsum}
\usepackage[x-1a]{pdfx}

\begin{document}

\chapter{My first chapter}

\section{A section here}

\lipsum

\chapter{My second chapter}

\end{document}

Answer 1

I've only had experience producing PDF/A documents, but the issues should be similar. What I've found is that the best approach is to forget about the pdfx package, and convert the normal output of pdftex to a conforming document using ghostscript. See the documentation. Among other things, make sure you use a modified version of PDFX_def.ps and include an ICC profile.