Printing the image using WCF Service

Question

I am trying to print the image using WCF Service. I have deployed my WCF service on server and my printer is also installed on the same server. When I call the method for printing service just goes into sleep. I have just created the PrintReport Method in a seprate class and added it's reference in the Service. When i traced the problem it just got stuck on the line mReportPrintDocument.Print(); where mReportPrintDocument is the object of PrintDocument. What can be the issue? may be I am missing the printer rights or some kind of configuration. Thanx