On Mon, Apr 19, 2010 at 10:33 AM, Fabian Eichst?dt <f.eichstaedt at fabz.de> wrote: > Hi all! > We recently aquired a Canon DR-2020U scanner and I tried to test it > with a recent sane git-snapshot. It compiled without problems and > I tried to use it with the canon_dr backend. This failed. > Allan Noah told me that this model uses a very different control method > than the other "DR" scanners and thus the canon_dr backend cannot work. > > I made a scan with Windows XP and logged the USB Commands with USBSnoop. > This logfile is available for download here (ca. 4.3 MB): > http://dl.dropbox.com/u/3879521/CANON-DR2020U_UsbSnoop.log.bz2 > > Maybe this is helpful for somebody interested in creating a suitable backend > for this scanner. I would be glad to be able to use this scanner with Linux.
Looks like mostly alot of 1 or 2 byte control transfers, with bulk for the image data. Perhaps one of the genesys authors could look at it? allan -- "The truth is an offense, but not a sin"