GDI, PDL and Adobe Postscript drivers are available from Panasonic.net for Windows XP, Vista and some other versions of Windows OS from this support page: https://panasonic.net/cns/pcc/support/mfp/
The site also has beta drivers for Windows 7 (32-bit and 64-bit). They are below each of the XP drivers.
There are also a couple of set-up utilities for XP at the bottom of the driver page. Panasonic does not have any Windows 8, 8.1 or 10 drivers for this printer. See http://cs.psn-web.net/support/mfp/common/Windows10_Compatibility.pdf
for the complete list of recent Windows OS support. This is near the top of the page on the above Panasonic.net link.
I hope this helps.