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<TITLE>sane-devel: Re: re-aligning? re-calibrating? an hp scanjet IIc</TITLE>
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<H1>Re: re-aligning? re-calibrating? an hp scanjet IIc</H1>
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<STRONG>From:</STRONG> Peter Kirchgessner (<A HREF="mailto:peter@kirchgessner.net?Subject=Re:%20re-aligning?%20re-calibrating?%20an%20hp%20scanjet%20IIc&In-Reply-To=&lt;38837040.43EC06B6@kirchgessner.net&gt;"><EM>peter@kirchgessner.net</EM></A>)<BR>
<STRONG>Date:</STRONG> Mon Jan 17 2000 - 11:40:48 PST
<P>
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Hello Carlos,
<BR>
<P>I also suppose it is a hardware problem which can not be fixed by
<BR>
software. The HP ScanJet IIc does not support a calibrate command. But
<BR>
if it is really a hardware problem, it would not help either.
<BR>
The sample images look like the carriage is not moving continuosly.
<BR>
Please have a look at the carriage while it is scanning. If it is
<BR>
jumping, cleaning the parts which fix the carriage may help. Maybe the
<BR>
mirror on the carriage must be fixed too.
<BR>
<P>--Peter
<BR>
<P>Carlos Puchol wrote:
<BR>
<EM>&gt;
</EM><BR>
<EM>&gt; hello,
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; i am running out of sources here. since there are experts
</EM><BR>
<EM>&gt; here, i am going to throw this up and would appreciate any
</EM><BR>
<EM>&gt; help andor pointers.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; i am running sane 1.0.1 with xsane (nice! btw) and gimp:
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Vendor: HP Model: C1750A Rev: 3226
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; this scanner was running fine and now, after some moving and
</EM><BR>
<EM>&gt; some period of rest in storage, it displays a &quot;phantom&quot; image
</EM><BR>
<EM>&gt; slightly shifted from the original.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; just to double check, went to windows and it happens
</EM><BR>
<EM>&gt; there too, so i suspect it is a hardware problem
</EM><BR>
<EM>&gt; regarding some sort of alignment or calibration.
</EM><BR>
<EM>&gt; attached i am sending two small samples to illistrate.
</EM><BR>
<EM>&gt; basically, strong color edges &quot;bleed&quot;
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; i played around a bit with gamma, and there are some
</EM><BR>
<EM>&gt; settings that minimize this, but the image always sows
</EM><BR>
<EM>&gt; some lack of &quot;depth&quot; - a contrast autostretch and/or hsv
</EM><BR>
<EM>&gt; autostrectch always brings the bleeding back.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; is this problem fixable in software?
</EM><BR>
<EM>&gt; under linux?
</EM><BR>
<EM>&gt; is it fixable at all?
</EM><BR>
<EM>&gt;
</EM><BR>
&lt;snip&gt;
<BR>
<PRE>
--
Peter Kirchgessner
WWW: <A HREF="http://www.kirchgessner.net">http://www.kirchgessner.net</A>
e-mail: <A HREF="mailto:peter@kirchgessner.net?Subject=Re:%20re-aligning?%20re-calibrating?%20an%20hp%20scanjet%20IIc&In-Reply-To=&lt;38837040.43EC06B6@kirchgessner.net&gt;">peter@kirchgessner.net</A>
<P><P><P>--
Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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