[sane-devel] Canon MF4770N

Rolf Bensch rolf at bensch-online.de
Thu Feb 6 19:45:19 UTC 2014

Hi Ralph,

Nice to hear from you again.

I guess that I already fixed ADF issue for Imageclass scanners. Please
fetch the latest SANE version from git.

Please check your SANE's versions:

$ scanimage -V
scanimage (sane-backends) 1.0.25git; backend version 1.0.25
$ scanimage -L
[sanei_debug] Setting debug level of pixma to 4.
[pixma] pixma is compiled with pthread support.
[pixma] pixma version 0.17.6

If your SANE version is the latest one and the issue still happens,
please create a log file and send it to me:
$ export SANE_DEBUG_PIXMA=11
$ scanimage [options to enable ADF] -x 5 -y 5 2> pixma.log > pixma.pnm

You can also use xsane ($ xsane &> pixma.log). Then select a small scan
area in the preview window.


Am 03.02.2014 18:28, schrieb Ralph Little:
> Hi Rolf (et al),
> I now have an MF4770N of my own.
> I will have a go at sorting out the issues relating to the ADF that we
> experienced previously and I will try to get to the bottom of the
> occasional error when scanning.
> To recap, the ADF on this scanner (any maybe on others) scans the
> first sheet from the ADF fine, but draws the next sheet ready to scan
> (like a fax). When scanning the next sheet, the printer is already in
> a ready state and doesn't like the sequence sent by sane when it
> starts to scan since it indicates that it is already busy. I have to
> cancel scanning on the scanner before proceeding.
> When do you think that the scanner should do in this situation? I can
> think of two possibilities:
> 1) Perhaps the driver could detect that the scanner is ready with
> another sheet and do something different to scan the next sheet, that
> is already loaded into the ADF.
> 2) Perhaps if the application is only asking for a single sheet scan,
> the remaining sheets should be cancelled at the end of the first-sheet
> scan.
> What think you?
> Cheers,
> Ralph

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