Asian fonts support for direct print

This article explains how to fix documents that are unreadable after printing due to missing fonts (particularly Asian fonts). This may happen if a PDF is uploaded to SAFEQ Cloud via public API. This solution is not applicable to the situation where a user submits the PDF document via the SAFEQ Cloud Client and the document is flattened and converted to PDF/A.

Background information

Once a print job is submitted via public API, the Primary or Secondary servers convert it. The goal is to convert any print job to PDF format. If the submitted job is a PDF already, the conversion process will leave it as is and the file will be spooled in the original format. When the job is released using direct print, another service converts it to the Postscript format. Sometimes, the printed document lacks certain fonts. Typically if the original contains Asian languages. You can solve this issue by adding the fonts into the operating system for your Primary or Secondary server and providing a configuration file for the Xpdf converter.

Solution for CentOS (RHEL)

Due to many languages ​​and distributions, we only provide support for the most used platform - CentOS (RHEL). Packages and configuration can also be customized based on the customer's needs.

1. Check whether the CMap package is installed by running the following command:

   CODE

   rpm -q poppler-data

2. If it isn't, install it.

   CODE

   sudo yum install poppler-data

3. Install the required fonts, for example, Google Noto fonts. Note that the Xpdf converter does not support ttc (true type collections) such as google-noto-cjk. Use only otf or ttf format. Example:

   CODE

   sudo yum install google-noto-sans-japanese-fonts
   
   sudo yum install google-noto-sans-korean-fonts
   
   sudo yum install google-noto-sans-traditional-chinese-fonts
   
   sudo yum install google-noto-sans-simplified-chinese-fonts

4. Prepare the xpdfrc configuration file for Xpdf converter. This file must have the following structure:
   
   

   CODE

   #----- begin Japanese support package
   cidToUnicode    Adobe-Japan1    /usr/share/poppler/cidToUnicode/Adobe-Japan1
   unicodeMap      ISO-2022-JP     /usr/share/poppler/unicodeMap/ISO-2022-JP
   unicodeMap      EUC-JP          /usr/share/poppler/unicodeMap/EUC-JP
   unicodeMap      Shift-JIS       /usr/share/poppler/unicodeMap/Shift-JIS
   cMapDir         Adobe-Japan1    /usr/share/poppler/cMap/Adobe-Japan1
   toUnicodeDir                    /usr/share/poppler/cMap/Adobe-Japan1
   fontFileCC      Adobe-Japan1    /usr/share/fonts/google-noto/NotoSansJP-Regular.otf
   #----- end Japanese support package

   • You can download the file here.

   • Or from Y Soft CDN using the following command:

     CODE

     sudo wget https://cdn.everyoneprint.com/conversion/xpdfrc

     In this case, we use mapping to the poppler-data resources. As conversion fonts, we use installed NotoSans regular otf versions.

5. Place the xpdfrc file in the /etc/ folder.

6. Set the permissions for the file to 644 at minimum.

   CODE

   sudo chmod 644 xpdfrc

For Xpdf configuration in general, see https://www.xpdfreader.com/xpdfrc-man.html.

For Xpdf language support, see https://www.xpdfreader.com/download.html.