The issue is caused by a conflict between windows server and windows 8/8.1 separator page files...

POSSIBLE DOUBLE SEPARATOR OR HEADER PAGE PRINTING FIX
The Tall Techie: Windows 8 Printing Two Separator Pages

TROUBLESHOOTING FOR SEPARATOR PAGE ISSUE
https://social.technet.microsoft.com...w8itprogeneral

FAQ ON SEPARATOR PAGE TYPES
Shared printer separator page for Windows 2000 and Windows XP :: Network :: Admin Tips :: Windows XP :: Windows Server 2012/2008/2003/2000/XP/NT Administrator Knowledge Base :: KBase Tips :: WindowsNetworking.com

CUSTOM SEPARATOR PAGE CREATION TUTORIAL
https://technet.microsoft.com/en-us/...(v=ws.11).aspx