sane-project-website/old-archive/1999-11/0268.html

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<title>sane-devel: Re: Update of the microtek2 backend</title>
<h1>Re: Update of the microtek2 backend</h1>
<b>Levente NOVAK</b> (<a href="mailto:novak@jaguar.dote.hu"><i>novak@jaguar.dote.hu</i></a>)<br>
<i>Sat, 27 Nov 1999 15:07:21 +0100 (MET)</i>
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On Wed, 24 Nov 1999, Bernd Schroeder wrote:<br>
<p>
<i>&gt; On Sun, Nov 21, 1999 at 06:07:58PM +0100, Bernd Schroeder wrote:</i><br>
<i>&gt; &gt; Hi,</i><br>
<i>&gt; &gt; </i><br>
<i>&gt; &gt; I have uploaded a new release of the microtek2 backend to</i><br>
<i>&gt; &gt; </i><br>
<i>&gt; &gt;  <a href="ftp://ftp.muc.de/people/bernds/mtek2/microtek2.0.8.tar.gz">ftp://ftp.muc.de/people/bernds/mtek2/microtek2.0.8.tar.gz</a> .</i><br>
<i>&gt; </i><br>
<i>&gt; Unfortunately, this release contains a bug, that didn't show up on my</i><br>
<i>&gt; system during testing, but may cause the backend to segfault</i><br>
<i>&gt; (depending on the actual contents of the stack, and like reported by</i><br>
<i>&gt; Levente Novak). I think I have fixed it and have uploaded the corrected</i><br>
<i>&gt; version to the ftp server. Since the difference to the previous version</i><br>
<i>&gt; is only the bugfix I have also called it '0.8'. So the URL is the</i><br>
<i>&gt; same as above.</i><br>
<i>&gt; </i><br>
<p>
The fixed backend now works again. Mirroring is solved on our Phantom<br>
636cx, but the "stripes" problem still remains as a slight colour balance<br>
shift horizontally from left to right. Note that the colour balance<br>
problem is not a new one, it used to appear with previous backend<br>
versions too.<br>
The stripes are in fact thin and more or less evenly spaced,<br>
being approximately 1.3-1.7 mm apart. There is a background density change<br>
superposition onto these stripes, forming non-regular sinusoidal<br>
background darkening. Finally, the leftmost part of image has an excess of<br>
red color balance while rightmost one is slightly bluish. The whole image<br>
appears to be underexposed (e.g. white paper is rendered grey).<br>
I hope this description could help.<br>
<p>
Levente<br>
<p>
PS: Anyway, the microtek2 backend improves constantly. Thanks, Bernd!<br>
<p>
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