[sane-devel] Document feeder jammed always in low resolution with ScanSnap ix500

[m. allan noah]

I'm afraid I don't have any clue here. There is clearly some system
level library or hardware problem happening, as there are a number of
users who are able to use these lower resolutions. I no longer have
access to this scanner, so it is impossible for me to reproduce. We
might need to get a log of the sane backend and a log of the windows
driver doing the same scans so I can compare.

allan

On Wed, May 7, 2014 at 5:25 AM, Wolfgang Fahl <wf at bitplan.com> wrote:
> Hi,
>
> with the ScanSnap ix500 the same happens here at 200 dpi.
> 300 dpi and up is fine.
>
> Wolfgang
>
> Carsten Behring wrote:
>
> Carsten Behring | 16 Feb 10:49 2014
> Hi,
>
> am using the latest version of Sane form GIT under Ubuntu
> (1.0.25-git20140212-precise0) with a ScanSnap ix500.
>
> If I scan a set of pages(6) with scanimage, like this:
>
> scanimage -d "fujitsu:ScanSnap iX500:36556" --source "ADF Duplex" -b
> --resolution 50dpi --mode color
>
> I always get a paper jam, with error message:
>
> scanimage: sane_read: Document feeder jammed
>
>
> It happens randomly a different page numbers, but I never manage to get a
> full successful scan of all 6 pages.
>
> It works under the highest resolution, so with a command like:
>
>  scanimage -d "fujitsu:ScanSnap iX500:36556" --source "ADF Duplex" -b
> --mode color
> (which default to resolution 600DPI)
>
>
> In the higher resolution the scan is much slower, it even does a small
> "thinking pause" after each page, so this is maybe related.
>
> Did somebody make a similar experience, and is there a fix/workaround ?
>
> Using the Scanner under Windows does not make this type of problem, I nearly
> never get a paper jam.
>
>
> My goal is to scan it lower resolution for Archiving/OCR purposes and 600DPI
> makes huge documents
>
> To scale the document down after the high resolution scan, does not give
> very good results. Or can somebody point me on how to do this.
> I just reduced the resolution with Gimp, but that is not satisfactory.
>
> Regards,
>
> Carsten
>
>
> --
>
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