2010/11/2 CJoeB <firstname.lastname@example.org>:
> Before someone asks "Haven't you posted this before?", I'll respond,
> "Sort of, but not really!"
> Anyway, I've reread all the previous posts. *Mostly, they were related
> to the printer portion of the device. *The printer works fine.
> The current problem is related to the scanner. *My previous post was
> about not being able to use xsane as a normal user, it would only work
> as root. *Since posting that, I've done upgrades to my system and for
> months, the scanner won't work at all - not as a normal user nor as root.
> I've tried reinstalling sane-backends and xsane using an unstable
> version, but that didn't help the situation. *I've checked the kernel
> configuration and that looks fine.
> When installing sane-backends, after the normal USE="....", there is a
> statement SANE-BACKENDS=" ... " where a number of devices are listed,
> but none in the 4700 series.
> I have no idea what is going on here. *I don't scan much, but tonight
> when I desperately needed to scan I couldn't despite my best efforts.
> BTW, I AM in the scanner group, so that is not the issue. *Whenever, I
> try to run xsane as a normal user or root, I get the message "No device
> Help would be appreciated.
The sane project has a pretty good search engine  where you can
find the needed driver.
Hint: Try hpaio
PS: Your internet search engine of choice is your friend.