Scanner : Xerox Workcentre 6015 B

Hello,

I have a Xerox Workcentre 6015 B.
I install the driver for linux but it works only for the printer and not for the scanner.
I'm connected via USB.
My workcenter is certified as working under windows, mac and linux.
But for the scanner under linux, it's a problem.
It is not in the SANE scanner list.

Thx,