Hi Nico, Thanks for your reply.
I tried snoopypro.exe v0.22 (followed this link: http://roback.cc/projects/iRiver/howto/snoopypro/) but it won't capture anything for me. The snoopypro's USB Devices window lists 4 devices of MF5770 USB\Vid_04a9&Pid_265f&Rev_0000&MI_00,USB\Vid_04a9&Pid_265f&MI_00 Canon MF5770 USB\Vid_04a9&Pid_265f&Rev_0000&MI_01,USB\Vid_04a9&Pid_265f&MI_01 USB Printing Support USB\Vid_04a9&Pid_265f&Rev_0000&MI_02,USB\Vid_04a9&Pid_265f&MI_02 USB Printing Support USB\Vid_04a9&Pid_265f&Rev_0000,USB\Vid_04a9&Pid_265f USB Composite Device If I "install and restart" snoopypro driver on the first device (MI_00) or the 4th device (USB Composite Device), my scanner application (MF Toolbox) complains about "Cannot communicate with scanner" and USBLog window shows nothing. If I "install and restart" on the other 2 devices (MI_01 and MI_02), MF Toolbox does scan but the USBLog is still empty. Any suggestion? Thanks, Jerry On Fri, May 8, 2009 at 6:46 AM, <nicolas.martin at freesurf.fr> wrote: > Probably this ImageClass uses a slightly different protocol version that > MF4xxx series. > > Could you get a Windows Snoop trace, using Snoopypro.exe ? > > Nicolas > >> Hi, >> >> I tested my Canon imageCLASS MF5770 (pixma backend) with snapshot >> "http://www.sane-project.org/snapshots/sane-backends-git20090503.tar.gz" >> and I got this error: >> >> [pixma] pixma_scan() failed ECANCELED >> [pixma] Reader task terminated: ECANCELED >> [pixma] read_image():reader task closed the pipe:0 bytes received, >> 1683840 bytes expected >> FAIL Error: Operation was cancelled >> >> The log is attached below. >> >> Thanks, >> >> Jerry >> >> =========================================================================== > >> > > >