[sane-devel] Re: ADF for HP7450c and Black image

Rene Rebe rene.rebe at gmx.net
Tue Sep 2 01:03:26 BST 2003


On: Mon, 1 Sep 2003 19:06:11 -0400,
    "Angela Corridore" <angelac at telcel.net.ve> wrote:

> Hi,
> I'm triying to use ADF switch on OS/2-Warp4 system with HP7450c, the command
> I'm using is :
> 	scanimage -d avision --format=tiff  --resolution=80 --adf=yes 1>a.tif 2>2.L
> When I do this, my scanner hang up initializing. I tried it with sane
> backend version 1.0.11 and 1.0.12 and I get the same result.
> Is there any problem with this ADF swicth or do I miss something ?

Nope this is correct. The backend does not work well in ADF mode using
this scanner. I try to meditate about this in the next days. The
problem is that AFAIK the byes we send are just right and work well on
my AV 8000S (A3 + ADF + > 30 pages/minute).

> Beside that, When I tried to scan with the new backend version (1.0.12)
> using the same parameters as the previous version (1.0.11) I get a black
> image.  The command I'm using is :
> 	scanimage -d avision --format=tiff  --resolution=80 1>a.tif 2>2.L
> Is there any difference between both versions that causes this result ?

Oh, interesting! Yes there are differences ...

Could I get a log for both of this commands with
SANE_DEBUG_AVISION=7. This would be a great help to track this.

> Thanks for your help...
> Angela

Sincerely yours,
  René Rebe
    - ROCK Linux stable release maintainer

René Rebe - Europe/Germany/Berlin
  rene at rocklinux.org rene.rebe at gmx.net
http://www.rocklinux.org http://www.rocklinux.net/people/rene
http://gsmp.tfh-berlin.de/gsmp http://gsmp.tfh-berlin.de/rene

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