sending raw data to printer

I followed the link http://support.microsoft.com/kb/322091/en-us to send the raw data to printer. I could print in RICOH Aficio SP 4100N PCL 6 but could not print the same in HP Color LaserJet 3600. I tried .ps, .pdf files but still i could not print in HP printer. HP printer prints just one line that looks like "%!PS-Adobe3.1 %Title %Creator %Creation Date". The environment i am working on is .NET 4.5 and code behind is C#.

What would be the issue?

Thanks!