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<!-- received="Sun Nov 2 11:15:57 1997 PST" -->
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<!-- sent="Sun, 2 Nov 1997 20:15:42 +0100 (MET)" -->
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<!-- name="Stefan Luettringhaus-Kappel" -->
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<!-- email="stefan@uran.informatik.uni-bonn.de" -->
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<!-- subject="Re: Mustek 1200SP: Missing Lines" -->
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<title>sane-devel: Re: Mustek 1200SP: Missing Lines</title>
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<h1>Re: Mustek 1200SP: Missing Lines</h1>
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<b>Stefan Luettringhaus-Kappel</b> (<a href="mailto:stefan@uran.informatik.uni-bonn.de"><i>stefan@uran.informatik.uni-bonn.de</i></a>)<br>
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<i>Sun, 2 Nov 1997 20:15:42 +0100 (MET)</i>
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<li> <b>Next message:</b> <a href="0016.html">David Mosberger-Tang: "Re: Mustek 1200SP: Missing Lines"</a>
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<li> <b>Previous message:</b> <a href="0014.html">Oliver.Rauch@Wolfsburg.DE: "UMAX 300P"</a>
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<li> <b>In reply to:</b> <a href="0002.html">David Mosberger-Tang: "Re: Mustek 1200SP: Missing Lines"</a>
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On Sat, 1 Nov 1997, David Mosberger-Tang wrote:<br>
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<p>
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<i>> >>>>> On Sat, 1 Nov 1997 12:37:50 +0100 (MET), Stefan Luettringhaus-Kappel <<a href="mailto:stefan@uran.informatik.uni-bonn.de">stefan@uran.informatik.uni-bonn.de</a>> said:</i><br>
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<i>> </i><br>
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<i>> >> Did anyone have the dropped line problem before sane-0.62? In</i><br>
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<i>> >> 0.62, the overlapped SCSI I/O was introduced for Linux which, if</i><br>
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<i>> >> the problem is timing-dependent, could make a difference.</i><br>
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<i>> >> </i><br>
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<i>> </i><br>
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<i>> Stefan> Yes, already in 0.4x. Also, sometimes lines are missing, and</i><br>
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<i>> Stefan> sometimes lines are repeated, i.e. like 12342345.</i><br>
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<i>> </i><br>
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<i>> Do we know that the windows driver works just fine in the problematic</i><br>
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<i>> cases and that it does _not_ use backtracking?</i><br>
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<i>> </i><br>
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<p>
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David,<br>
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<p>
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it did work fine with Win 3.11 using the cheap scsi card which came with<br>
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the the scanner. No idea if the windoze driver uses backtracking.<br>
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<p>
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And it does work with the ncr810 and sane in color mode with 301 dpi or<br>
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more. To repeat myself: with 301 dpi or more my scanner is _much_ slower<br>
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than with 300 dpi and below, making more noise. It seems it makes many<br>
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small step at lower speed. The carriage also seems to backtrack at scsi<br>
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transfer boundaries. I can live with this quite well: I scan eyerything at<br>
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360dpi in color and do the postprocessing with gimp (I have 64MB RAM :-) <br>
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or ImageMagick. On the other hand, I don't have much time to do more<br>
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experiments, sorry. Anyway, my scanner (v1.00) seems to be a little bit<br>
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different - see my answer to your survey.<br>
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<p>
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Stefan<br>
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<p>
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<pre>
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--
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Dr. Stefan Lüttringhaus-Kappel <><><><><><><><><><><><><><><><><><><><><>
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Institut für Informatik III Phone +49 (228) 73-4536
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Universität Bonn Fax +49 (228) 73-4382
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Römerstraße 164 <a href="mailto:stefan@uran.informatik.uni-bonn.de">stefan@uran.informatik.uni-bonn.de</a>
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D-53117 Bonn (Germany) <a href="http://www.informatik.uni-bonn.de/~stefan/">http://www.informatik.uni-bonn.de/~stefan/</a>
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<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
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<p>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
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To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
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</pre>
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0016.html">David Mosberger-Tang: "Re: Mustek 1200SP: Missing Lines"</a>
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<li> <b>Previous message:</b> <a href="0014.html">Oliver.Rauch@Wolfsburg.DE: "UMAX 300P"</a>
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<li> <b>In reply to:</b> <a href="0002.html">David Mosberger-Tang: "Re: Mustek 1200SP: Missing Lines"</a>
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<!-- nextthread="start" -->
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