[sane-devel] Canon i-sensys MF720C Series is not supported by sane-pixma backend

Rolf Bensch rolf at bensch-online.de
Wed Mar 11 12:59:18 GMT 2020

Hi Petr,

Today I added your scanner to SANE sources.

You can rebuild SANE from sources now, or if you have Ubuntu or an
Ubuntu clone, you can update SANE from my ppa
(https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-git) tomorrow.

If you might have any problems, please create an issue here:
https://gitlab.com/sane-project/backends/-/issues . It's easier to use
the issue tracker than using the mailing list, if we need to exchange
any logfiles.

Please also report when your scanner is working.

Hope this helps.


Am 10.03.20 um 22:48 schrieb Petr Cibulka:
> Dear developers,
> I have a Canon i-sensys MF724Cdw multifunction device, which is
> recognized by |sane-find-scanner| as:
> *|USB scanner (vendor=0x04a9 [Canon,Inc.], product=0x27b5 [MF720C
> Series]) at libusb:001:005|*
> Unfortunately, it is not recognized and supported by SANE.
> I have investigated in the supported device list and found the most of
> Canon devices is supported by the |sane-pixma| backend, namely
> i-SENSYS MF730 Series (0x04a9/0x27e4) has status Good (as Ethernet and
> WiFi have not been tested yet).
> Neither i-SENSYS MF720C Series nor i-sensys MF724Cdw (0x04a9/0x27b5)
> is mentioned in the compatibility table, so that no backend supports
> them at the moment.
> What is necessary to do to support these model?
> I guess it should be supported by |sane-pixma| backend as well,
> perhaps only its ID is missing in the backend code.
> I have tried to find some contact details to |sane-pixma| backend
> authors - no success (lot of broken links or pages updated ten years ago).
> I am not sure if |sane-pixma| backend is maintained in general.
> I can contribute with testing if necessary.
> Thanks for any info and/or contact,
> Petr
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