Welcome to the forum anne-ology.
I haven't used it, but FreeKapture may do the job.
http://download.cnet.com/FreeKapture...-10673689.html
But maybe you should uninstall the HP program/driver then visit HP's website, download the latest version(s) for your C6280 and install them.
If all else fails you could switch to Linux - SANE does a good job with most scanners.