Hello,
Am Montag, den 09. Juli schrieb stef:
> Le 06/07/2012 09:08, M G Berberich a ?crit :
> >I have a Canon LiDE 210. The sane-website says it is supported
> >?Complete? by sane-genesys.
> >
> >It can scan at resolution up to 4800dpi, but the stable version of
> >sane (1.0.22-7.1 from debian wheezy) treats it as a Canon LiDE 200 and
> >only offers resolutions up to 1200dpi which works fine.
> >
> >I installed the git-snapshot of the backends and with this version
> >sane offers resolutions up to 4800dpi, but the resolutions above
> >1200dpi (2400dpi and 4800dpi) do not work at all.
> >
> >It has to be aborted by 2 times Ctrl-C:
> >
> > 18 hermione:/tmp/sane [09:04:29]
> > > bin/scanimage -d genesys:libusb:001:005 --resolution 2400 > X.png
> > ^Cscanimage: received signal 2
> > scanimage: trying to stop scanner
> > ^Cscanimage: received signal 2
> > scanimage: aborting
> > 19 hermione:/tmp/sane [09:04:58]
> >
> > MfG
> > bmg
> >
> Hello,
>
> when scanning at these resolution, the motor is slow and very
> silent. So it takes time to scan. In odrer to speed scan, use
> geometry parameters to reduce the amount of data (a full 2400 dpi
> scan is about 1,7 Gb) and let the scanner time to complete.
That was not the problem, the carriage does not move at all.
> If after a few minutes, nothing is moving,
That was the problem. The scanner is waiting very long bevor starting
to scan, while I expeced it to do a fast-forward immediately.
It probably is doing some calibration (which it remembers) because it
only is doing this once.
I now get 2400?2400 dpi with ?--resolution 2400?. Which is fine.
With ?--resolution 4800? there are always too pixel side by side
horizontally with the same color, so the scanner effectivly only gives
2400?4800 dpi while Canon claims 4800?4800 dpi. This might by a
hardware-constraint.
Sorry for bothering you.
MfG
bmg
--
?Des is v?llig wurscht, was heut beschlos- | M G Berberich
sen wird: I bin sowieso dagegn!? | berberic at fmi.uni-passau.de
(SPD-Stadtrat Kurt Schindler; Regensburg) | www.fmi.uni-passau.de/~berberic
