The important stuff here is:
1. make sure direct printing is disabled
2. make sure advanced printing is enabled
If the driver is XPS based, the job will go thru the XPSPRINT
pipeline, and never be formated as EMF.
You can find more informataion on when EMF or RAW is used on the following Undocumented Printing page: http://www.undocprint.org/winspool/spool_files#when_is_raw_used