スキャナーの使用の最後のステップは何ですか？

Canon DR-1210C USBスキャナがあります。

挿入されると、カーネルはそれを認識します。

[5365651.911506] usb 2-2.1: USB disconnect, address 3
[5365661.952066] usb 2-2: USB disconnect, address 2
[5365683.268060] usb 2-2: new full speed USB device using uhci_hcd and address 4
[5365683.441019] usb 2-2: New USB device found, idVendor=1083, idProduct=160f
[5365683.441027] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[5365683.441033] usb 2-2: Product: CANON   DR-1210C        
[5365683.441037] usb 2-2: Manufacturer: CANON   
[5365683.441248] usb 2-2: configuration #1 chosen from 1 choice

sane-find-scannerあなたはそれを見ることができます：

 # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x1083 [CANON   ], product=0x160f [CANON   DR-1210C        ], chip=GL845) at libusb:002:004
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.
  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x1083 [CANON   ], product=0x160f [CANON   DR-1210C        ], chip=GL845) at libusb:002:004
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.

ところでscanimage -Lスキャナーがないと出てきますね。

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

それでは、私が何を見逃しているのでしょうか？ HOWTOをフォローしてみましたが、問題解決の提案による洞察を得られませんでした。