[sane-devel] Scanning from fujitsu ScanSnap S1500 Error during device I/O

[m. allan noah]

No, Markus has uncovered a real bug. The S1500 chokes when doing high
resolution duplex scans. The backend reads data from both sides of the
paper, and buffers the back side. Unfortunately, we read too far ahead
on the backside, and the scanner has problems.

Do you have the S1500 too? perhaps you could repeat the experiment:

scanimage -b -d fujitsu --source "ADF Duplex" --mode color

then see if out1.pnm and out2.pnm look reasonable.

allan

On Fri, Feb 4, 2011 at 11:28 AM, Joachim Franek
<Joachim.Franek at t-online.de> wrote:
> On Friday 04 February 2011 15:41:57 Markus Golser wrote:
>> Hi I try to scan a document using my new scansnap S1500.
>>
>> works: scanadf -d fujitsu --mode color
>> works: scanadf -d fujitsu --mode lineart
>> works: scanadf -d fujitsu --mode halftone
>> works: scanadf -d fujitsu --source "ADF Duplex" --mode Lineart
>> works: scanadf -d fujitsu --source "ADF Duplex" --mode Halftone
>>
>> fails: scanadf -d fujitsu --source "ADF Duplex" --mode color
> Try Color instead of color.
>
> From help text: scanimage --help
>
> Options specific to device `fujitsu:ScanSnap S1500:35552':
>  Standard:
>    --source ADF Front|ADF Back|ADF Duplex [ADF Front]
>        Selects the scan source (such as a document-feeder).
>    --mode Lineart|Halftone|Gray|Color [Lineart]
> ==============================
>        Selects the scan mode (e.g., lineart, monochrome, or color).
>    --resolution 50..600dpi (in steps of 1) [600]
>        Sets the horizontal resolution of the scanned image.
>    --y-resolution 50..600dpi (in steps of 1) [600]
>        Sets the vertical resolution of the scanned image.
>
>
>
> Joachim
>
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