[Tex/LaTex] Error creating pdf/a with latex

pdf

I'm trying to create pdf/a through latex. I inserted in my tex file the package:

\usepackage[a-1b]{pdfx}

with the option a-1b but I got error:

pdfTeX error (ext5): cannot open file for embedding ...eam attr{/N 4} file{sRGBIEC1966-2.1.icm}
\pdfobjcompresslevel > 0 requires \pdfminorversion > 4. Object streams disabled now.

I don't really know what does it mean

Best Answer

This is a color profile. Printers need them to correctly print color pdfs. There are a number of profiles on the net.

You can find this file here: https://github.com/bencomp/pdfx-ext/blob/master/sRGBIEC1966-2.1.icm

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Here's the beginning of a solution. Needs much more work, but I don't have time now. Maybe someone will pick this up and improve it. For example, it could properly hook into the pdftex colour stack mechanism...

\documentclass{article}
\usepackage{xcolor}
%First  define the pattern:
\immediate\pdfobj stream attr{%
/Type /Pattern
/PatternType 1
/PaintType 1
/TilingType 1
/BBox [0 0 20 20]
/XStep 14.1732283 % 5mm step
/YStep 14.1732283 % 5mm step
/Resources << >>}{%
2.83465 0 0 2.83465 0 0 cm % use mm as units
1 J % rounded caps (to make dots)
0.25 w % line 0.25 units wide
[0 0.5] 0 d % dots every 0.5 units
1 1 m 1 6 l 6 6 l S % draw two edges of the unit square
}
%Now add pattern to the page resource dictionary:
\edef\myn{\the\pdflastobj}
\begingroup
   \edef\x{\endgroup
     \pdfpageresources{%
       \the\pdfpageresources /Pattern <</Mydots \myn\space0 R>>
     }%
   }%
\x

%Define a command to use the pattern:
\makeatletter
\newcommand{\mypattern}[1]{\pdfliteral{/Pattern cs /Mydots scn}#1\reset@color}
\makeatother

\begin{document}
Normal:\hrule height 10pt

%draw whatever you want. here i am using some text and a solid rule for demonstration
\mypattern{\Huge\textbf{\textsf{Patterned:}}\hrule height 40pt}

Normal:\hrule height 10pt

\end{document}

Best Answer

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