History

The Avision backend was originally written by Rene Rebe in 1997. His original site contains a full history of his changes.

Following a period of inactivity, I took over maintenance of the Avision backend in October of 2010.

Since then, I've added, or improved, support for the: HP 8200 series, AV220-G, AV210D2+, and DocuMate262i.

FAQ

• Q:Is my scanner supported by the Avision backend?
  A:Check the supported devices list. Be sure to look at both the latest release and the development version.
• Q:How do I report a bug?
  A:Fill out a bug report, or send an email to the sane developers list. Please mention the maker of your scanner as well as the model number. Also, include the output of 'sane-find-scanner -v -v' and 'scanimage -L'.
• Q:I think my device is an Avision device, but it isn't listed as supported.
  A:See "How do I report a bug?" above.
• Q:How do I create a debug log?
  A:env SANE_DEBUG_AVISION=7 scanimage > scan.pnm 2> debug.log
• Q:I have an xxxxxx scanner, which is listed as supported, but doesn't work.
  A:There may be regressions of the code of which I'm not aware. See "How do I report a bug?" above.

Known Issues

These are the known issues at present:

• For the HP 8200 series, resolutions above 2400dpi don't work.
• For the AV220-G, resolutions above 300dpi don't work.
• I have had one report that color scans on the Visioneer Xerox Documate 510 produce banded output. I've looked at the resulting scan image with its strange color banding, but I'm not sure what is causing it. I'm seeking a tester who can do Windows USB dumps with this scanner.
• The AV120 is currently failing to communicate with the backend. It kind of looks like a problem with USB Interrupt packets, but more research is necessary.