[sane-devel] Canon Color ImageCLASS MF8350Cdn

[Florian Nierhaus]

Hi,

I acquired an used Canon Color ImageCLASS MF8350Cdn and it didn't work out
of the box (Ubuntu 14.04.2), I made some changes to sane-backend master.
patch is attached for you.

I can now scan from the feeder and and regular in both color and black and
white.

Oddities:
* Simple Scan complains with "Error communicating with scanner" at the end
when scanning from the feeder.
* Seems to make more noise than using the proprietary driver on OSX
* I need to run it as root, but I think that is an Ubuntu / install issue
on my side

Notes:
You need to set the scanner to "Remote Scanner". There is also a "Computer"
scan option, but that seems to tell the computer what to scan (e.g. PDF,
email, save, ..) and that menu doesn't even come up using the sane backend.


Where I am unsure on the patch:

I followed the MF4100 and added the MF8350 to the same places in the code
to use iclass_exec, not sure that was right/wrong.

The scanner is supposed to be 600x600 dpi, so not sure I defined that
correctly with 600, 0

And the 640 / 1050 was also just copied from one of the similar printers.

Also I haven't tried network scanning yet.

Also in case you need it the lsusb output:
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x04a9 Canon, Inc.
  idProduct          0x2708
  bcdDevice            0.00
  iManufacturer           1 Canon,Inc.
  iProduct                2 MF8350
  bNumConfigurations      1


Thank you and best regards,
Florian
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