I have a multifunction HP printer/scanner. I've always used it wirelessly with a PC before now, but want to connect it to my Maverick laptop. I have hplip installed and have connected the machine to the computer via USB (wireless is not supported.) The printer works just fine, but when I try to scan, the scanner's console (not the computer, but the window on the scanner itself) tells me there's an error.

I've looked at the hplip documentation for my machine, and it says, "Scan supported means that PC initiated scan using a SANE compatible software application is supported over parallel, USB, or network (depending on I/O connection)."

What is SANE? I'm assuming it's a driver that's already installed, but where do I find a SANE compatible software application?