How to print from MVC4 controller from server

How to print from MVC4 controller from server

Code below is used to print from ASP .NET MVC4 application to Samsung
ML-331x Series printer connected to IP address in LAN and shared in server
as Samsung ML-331x Series
Nothing is printed. Execution stops at doc.Print() line. Every controller
call adds new unfinished job:

Those jobs are never finished, only iisreset clears them.
Server is Windows 2003 + IIS It worked in MVC2 .NET 3.5 application.
ForteSSL VPN was installed in server and application was upgraded to MVC3
and .NET 4. (After that printing was not checked immediately, so I'm not
sure is this related to those changes).
User NETWORK SERVICE with all permissions is added to printer users but
problem persists. Running application in development computer by pressing
F5 in visual studio with Web Developer server and calling with controller
to print to PDF Creator works OK.
How to print from controller in server ?
public ActionResult PrintTest()
{
var doc = new PrintDocument();
doc.PrinterSettings.PrinterName = "Samsung ML-331x Series";
doc.PrintPage += new PrintPageEventHandler(TestProvideContent);
doc.Print();
return new ContentResult()
{
Content = "Printed"
};
}
public void TestProvideContent(object sender, PrintPageEventArgs e)
{
e.Graphics.DrawString("Test",
new Font("Arial", 12),
Brushes.Black,
e.MarginBounds.Left,
e.MarginBounds.Top);
}
Update
Application runs at full trust Level. Application log in event viewer does
not have any entries about this.
Using Programmatically "hello world" default SERVER-side printer in
ASP.NET MVC I tried to use printer name with server name as
\\SERVER\Samsung ML-331x Series but problem persists.