[sane-devel] Canon laser multi-functional support: MFNP protocol

[Michael Shigorin]

On Thu, Jul 02, 2015 at 09:33:18PM +0300, I wrote:
> > > 6140 also exhibited weird behaviour at 600dpi (the sound's also
> > > different from 75/150/300 which scanned just fine): the head
> > > might have been hitting the edge for a second or two with the
> > > result being gray bands along the scanning direction at the end
> > > of the file, I've uploaded a (8Kx5K) sample here just in case:
> > > http://fly.osdn.org.ua/~mike/tmp/sane-pixma/Canon-MF6140dn-xsane-600dpi.jpeg
> This holds

Also for networked scans unfortunately.

> the scans are also strictly one-time, I've not been able to
> find a scanimage/xsane (both starting with preview or not)
> combos that wouldn't hang reliably until USB cable is replugged
> between libsane clients' invocations.

And this is NOT observed with networking scans, that is
scanimage; scanimage; xsane; xsane; scanimage is fine.

> > > 1133 didn't hit that (the 600dpi sound is also different) but the
> > > image quality suffers from some kind of a "cellular" effect, see
> > > http://fly.osdn.org.ua/~mike/tmp/sane-pixma/Canon-iR1133iF-xsane-600dpi.jpeg
> > > (300dpi and lower are fine though).

Unable to test networking, need to get an admin PIN
(seems this one has been locked unlike the two others).

> Phew, gotta go home finally :-)

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