Driver for HP j6480 Fax capability under ML?

I have an HP J6480 that I used to have in my print queue twice under Snow Leopard, once as a printer, once as a fax. Somewhere along the line between SL, Lion, and ML, it stopped being in the queue as a fax. I may have deleted it when I was having a printer problem, and not bothered to add it back, because it was a rarely needed feature. The printer is still in my installed printers list as a print/scan device.

Now I'd like to drive it as a fax from my computer, now running OS X 10.8.2.

With apple support on the line, I connected to it via USB, could see the printer as a 'multifunction' device, but still, when I click on the device in the printer list, it shows only print/scan options.

Anyone know if the fax capability is hidden somewhere and I'm just not seeing it? Or if there's a workaround to send something as a fax without having to physically print, scan, and fax each page from the J6480 itself?

HP of course is useless--the device is long out of warranty, and their web site only provides links to 'informational' downloads for printer installation for Lion and Mountain Lion.