> 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.
I have no idea if this could be related but I have recently tested an S510 which one of our users was using at home. He said the scanner doesn't work fine anymore. I thought of course you can not compare to the bigger ones like fi-6230 bunt when I tried to scan duplex at - I think it was 300dpi - it was veeeeeeery slow. It felt like being 1 or 2 minutes and that really seems to much :) What I remember is that it took half of the A4 paper quite fast and then waited a long time, scanned a bit more, waited and so on until the page was finished. The output file itself was looking fine. Any ideas if that's related somehow, at least I guess the S510 and S1500 may be from the same "family". Regards, Simon > > 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 >> >> -- >> sane-devel mailing list: sane-devel at lists.alioth.debian.org >> http://lists.alioth.debian.org/mailman/listinfo/sane-devel >> Unsubscribe: Send mail with subject "unsubscribe your_password" >> ? ? ? ? ? ? to sane-devel-request at lists.alioth.debian.org >> > > > > -- > "The truth is an offense, but not a sin" > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org >
