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<H1>Re: Transparency support for snapscan backend</H1>
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<STRONG>From:</STRONG> Oliver Schwartz (<A HREF="mailto:Oliver.Schwartz@gmx.de?Subject=Re:%20Transparency%20support%20for%20snapscan%20backend&In-Reply-To=&lt;00050223021901.00523@oliverspc&gt;"><EM>Oliver.Schwartz@gmx.de</EM></A>)<BR>
<STRONG>Date:</STRONG> Tue May 02 2000 - 13:42:28 PDT
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Hi,
<BR>
<P><EM>&gt; &gt; I've put a first version of my patch for transparency support in the snapscan
</EM><BR>
<EM>&gt; &gt; backend on my homepage (<A HREF="http://www.ginko.de/user/oschwartz/snapscan">http://www.ginko.de/user/oschwartz/snapscan</A>).
</EM><BR>
<EM>&gt; &gt;
</EM><BR>
<EM>&gt; &gt; Up to now I have only tested it with an Acer ScanPrisa 620UT.
</EM><BR>
<EM>&gt; &gt;
</EM><BR>
<EM>&gt; &gt; The patch is for sane-1.0.2. It does not work with previous versions.
</EM><BR>
<EM>&gt; &gt;
</EM><BR>
<EM>&gt; &gt; If you have a Snapscan or Acer Prisa scanner with transparency unit please try
</EM><BR>
<EM>&gt; &gt; it and tell me whether it works for you.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; it runs! Thank you very much for your work.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Only the following appeared:
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; On your homepage in the &quot;installation instructions&quot; under &quot;5.&quot; should
</EM><BR>
<EM>&gt; only be the instruction &quot;make&quot;, under &quot;6.&quot; &quot;make install&quot;, without dot
</EM><BR>
<EM>&gt; and slash. This way my system is working correctly.
</EM><BR>
<P>You're right. I've changed it.
<BR>
<P><EM>&gt; I copied &quot;find-scanner&quot; manually, because &quot;make install&quot; and
</EM><BR>
<EM>&gt; &quot;tools&quot; haven't been installed.
</EM><BR>
<P>That's true. However, it's a general sane problem. I don't know why find-scanner
<BR>
is not installed by &quot;make install&quot; (anyone?).
<BR>
<P><EM>&gt; Version 1.0.2 don't overwrite existing files in /usr/local/etc/sane.d
</EM><BR>
<EM>&gt; and /usr/local/lib/sane. I searched for it a long time, at least
</EM><BR>
<EM>&gt; found it and then deleted it manually.
</EM><BR>
<P>Hm... It should leave old configuration files in /usr/local/etc/sane.d but
<BR>
overwrite binaries in /usr/local/lib/sane. The only reasons I can imagine why
<BR>
it didn't work for you is that you had sane 1.0.1 installed. In this case some
<BR>
links in /usr/local/lib/sane are not replaced.
<BR>
<P><EM>&gt; The scan looks very fine.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Finally I have three wishes:
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; The scanarea can be 21,5 x 29 cm.
</EM><BR>
<P>Are you sure? I found an electronic version of a Snapscan 300 / 600 manual which
<BR>
specifies 203 x 254 mm for transparency mode. I'll add support for
<BR>
model-dependent max. scan areas in the next version of the patch.
<BR>
<P><EM>&gt; A switch that allows me to choice between negative and positive scan.
</EM><BR>
<P>You should use xsane. It already has a &quot;negative&quot; switch.
<BR>
<P><EM>&gt; And a little faster scan only by 600 dpi with maximal scan-area in mode
</EM><BR>
<EM>&gt; flatbed. A scan with this resolution was running 45 minutes before
</EM><BR>
<EM>&gt; xscanimage disapeared suddenly, although only half of the image was
</EM><BR>
<EM>&gt; scanned.
</EM><BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<BR>
Hm again... My scanner works fine with this resolution. Is this a new
<BR>
behaviour after applying the patch? Does anybody else have this problem with a
<BR>
SnapScan 600? What kind of SCSI-adapter are you using?
<BR>
<P>Oliver
<BR>
<P><PRE>
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