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Old 03-06-2010, 09:01 PM   #16
Registered: Jul 2003
Location: On the Beaches of Super Sunny Southern San Clemente, California USA
Distribution: Slackware - duh!
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Here you go

# sane-find-scanner

  # 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.
  # Also you need support for SCSI Generic (sg) in your operating system.
  # If using Linux, try "modprobe sg".

found USB scanner (vendor=0x04a9 [Canon], product=0x1721 [MP210 series]) at libusb:001:003
  # 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.

# scanimage -L
device `pixma:04A91721' is a CANON Canon PIXMA MP210 multi-function peripheral

# scanimage -V
scanimage (sane-backends) 1.0.20; backend version 1.0.20
Notice the first two options return a presumably different result. One being a Canon MP210 and the other being a Canon PIXMA MP210, respectively.

I'm wondering if the difference in the listing has anything to do with the difference between canon630u and pixma backends.

The output from sane-find-scanner is what, I believe, you were looking for
Old 03-07-2010, 10:31 AM   #17
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Registered: Oct 2003
Location: Melbourne
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Actually it was the output from 'scanimage -L' that I wanted to see.
What you are seeing is different from what I would have expected based on the contents of the man page for sane-pixma.
The device name is in the form pixma:xxxxyyyy_zzzzz where x, y and z are vendor ID, product ID and serial number respectively. Example: pixma:04A91709_123456 is a MP150.
Your reported device name does not have an entry for serial number.
Just another example of the documentation not being quite in step with the current software, I suppose.



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