CUPS and raw printer

I have a machine with openSUSE 10.3 and another machine with win2003. Linux machine has Thermal Printer Godex EZ-1100+ connected via lpt. I need to print to Godex from win2003, so I installed it in Raw printing mode, because Godex have no linux drivers. And everything is good, but I have some latency in printing. It varies from “instantly” to 20 seconds. Jobs are very small, only 5 or 6 kb. Can somebody help me?
Thanks! Sorry for my english…