The atricle that you shared in this thread is a good soruce of the information,
however I would like to share with you the additional source regarding your question:
http://support.jaspersoft.com/Docs/viewDocument.php?doc_id=60921054&start_page=294&nav=true
Please pay your attention to the <pdfEmbedded>true</pdfEmbedded> tag
In short: you should create a font extension jar file and then make it available in your application, you can read more about how to do this in the aforementioned guide.
I have attached a sample of the font extension file that I used in JasperReports Server 5.5.0 to this thread.
