sane-project-website/old-archive/1998-01/0170.html

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<title>sane-devel: Re: Astra 6X0S-patch available</title>
<h1>Re: Astra 6X0S-patch available</h1>
<b>Nicolas Lucas de Peslouan</b> (<a href="mailto:nlp@usa.net"><i>nlp@usa.net</i></a>)<br>
<i>Mon, 26 Jan 1998 18:17:07 +0100</i>
<p>
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Hi Oliver,<br>
<p>
After Bernd Seemann's reply, here is mine. I don't know what Bernd's<br>
scanner is, but on my Astra 610S, I got the following results with your<br>
Astra 6X0S patch.<br>
<p>
Grey mode : The output from a scan of the full scan area starts with a<br>
black area and the scanner stops before reaching the end of the scan<br>
area. (The unscanned area have the same size as the black area).<br>
<p>
Here are the size of the black area, based on the resolution :<br>
<p>
100 dpi (849x1169), 417 black lines.<br>
200 dpi (1699x2339), 189 black lines.<br>
300 dpi (2549x3509), 107 black lines. <br>
75 dpi (637x877), 560 black lines.<br>
50 dpi (424x584), full image is black and the scanner hang (scanimage<br>
return before scanner start to move, but no need to turn the scanner off<br>
and on).<br>
<p>
Color preview mode : Same problem as above (black area). The colors are<br>
"CCD" miss-aligned. (A horizontal black line will show 3 lines, first<br>
Yellow, second Magenta, third Cyan). The distance between lines change<br>
based on the resolution.<br>
<p>
Here are the size of the black area and the "distance between lines",<br>
based on the resolution :<br>
<p>
50 dpi (424x584), 366 black lines, 7 pixel between lines. (Y-&gt;M and<br>
M-&gt;C).<br>
75 dpi (637x877), 246 black lines, 10 pixel between Y and M lines, 4<br>
pixel between M and C lines.<br>
100 dpi (849x1169), 171 black lines, 9 pixel between Y and M lines, 13<br>
pixel between M and C lines.<br>
200 dpi (1699x2339), 75 black lines, 14 pixel between Y and M lines, 10<br>
pixel between M and C lines.<br>
300 dpi [out of memory :-(]<br>
<p>
Color mode : The scanner move for about 5mm, and go back. This hang the<br>
scanner (must turn off and on). The output image is some sort of range<br>
from Cyan to Magenta to Yellow, may be related to calibration, but I<br>
don't understand how calibration work without moving the scanner...<br>
<p>
If you need more informations or want to do some more tests, just ask...<br>
<p>
	Nicolas.<br>
<p>
<pre>
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</pre>
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<ul>
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<li> <b>Next message:</b> <a href="0171.html">Oliver.Rauch@Wolfsburg.DE: "Re: Astra 6X0S-patch availabley"</a>
<li> <b>Previous message:</b> <a href="0169.html">D. Cameron Mauch: "direct solaris support"</a>
<li> <b>Maybe in reply to:</b> <a href="0158.html">Oliver.Rauch@Wolfsburg.DE: "Astra 6X0S-patch available"</a>
<!-- nextthread="start" -->
<li> <b>Next in thread:</b> <a href="0186.html">Nicolas Lucas de Peslouan: "Re: Astra 6X0S-patch available"</a>
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