Try the Vista 32 or 64 bit drivers at http://panasonic.net/pcc/support/mfp/dp-190/index.html
Many found the Vista drivers for many things to do in a pinch.
Sorry, but I can't tell if that will work but it's what I've tried in the past for other things.
Can someone direct me to the Windows 7 driver(s) for Panasonic's Workio DP-190? Or is it not compatible with Win7?