We are using Aspose.Words component for printing Word and WordML documents from server side code. Recently, as  suggests, we contacted Microsoft for our issues with server side printing (not particularly related to Aspose) and they said that System.Drawing and System.Printing namespaces are not supported in server side.
We are planning on using XpsPrintApi as it seems the only viable way to print from server side and we'd like to make sure if we can continue using your components for XPS conversion.
Our concerns are
the conversion to XPS document involve XPS printer driver (hence System.Drawing.Printing usage)?
System.Drawing namespace used for any document creation (mainly Word and Pdf) ?
the PDF printing (via Aspose.Pdf) also use System.Drawing.Printing namespace?
 <a href="https://forum.aspose.com/t/87613</a></div>