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<TITLE>sane-devel: "Rainbow" striping on USB HP ScanJet 5300C</TITLE>
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<META NAME="Author" CONTENT="Scott Gifford (sgifford@tir.com)">
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<META NAME="Subject" CONTENT=""Rainbow" striping on USB HP ScanJet 5300C">
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<H1>"Rainbow" striping on USB HP ScanJet 5300C</H1>
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<!-- received="Tue Dec 26 18:19:01 2000" -->
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<!-- isoreceived="20001227021901" -->
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<!-- sent="26 Dec 2000 21:34:25 -0500" -->
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<!-- isosent="20001227023425" -->
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<!-- name="Scott Gifford" -->
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<!-- email="sgifford@tir.com" -->
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<!-- subject=""Rainbow" striping on USB HP ScanJet 5300C" -->
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<!-- id="m3wvcmiocu.fsf@sghome.tir.com" -->
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<STRONG>From:</STRONG> Scott Gifford (<A HREF="mailto:sgifford@tir.com?Subject=Re:%20"Rainbow"%20striping%20on%20USB%20HP%20ScanJet%205300C&In-Reply-To=<m3wvcmiocu.fsf@sghome.tir.com>"><EM>sgifford@tir.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Dec 26 2000 - 18:34:25 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0275.html">Eugene Kanter: "xsane-0.68 configure problem fixed?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<HR NOSHADE><P>
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<P>
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Apologies for the long To: list; I haven't been able to determine
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<BR>
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whether the problem I'm having is caused by Jeremy Hall's
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<BR>
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(experimental) usb-scsi driver, by the Avision SANE backend, or by
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<BR>
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something else entirely. If I can narrow it down to one subsystem,
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<BR>
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I'll make sure to trim the list.
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<BR>
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<P>I'm seeing weird rainbow-colored stripes, repeating about every
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<BR>
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half-inch, whenever I scan anything with my HP ScanJet 5300C.
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<BR>
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Pictures are available at:
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<BR>
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<P> <A HREF="http://www.tir.com/~jonquil/scanner/">http://www.tir.com/~jonquil/scanner/</A>
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<BR>
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<P>scan1-crop is the top inch of the scan, and scan1 is the entire image.
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<BR>
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<P>I can get these stripes to go away by plugging the scanner into a
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<BR>
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Windows machine, using HP's software once, then plugging it back into
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<BR>
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my Linux machine. That points to an initialization problem, but I
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<BR>
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haven't seen anybody else complaining about this scanner exhibiting
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<BR>
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this problem...
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<BR>
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<P>I'm using Jeremy Hall's experimental usb-scsi driver patch (from
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<BR>
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Tobias Nijweide's page at:
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<BR>
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<P> <A HREF="http://www.neatech.nl/oss/HP5300C/">http://www.neatech.nl/oss/HP5300C/</A>
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<BR>
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<P>) against a 2.4.0-test12 kernel, and the Avision SANE backend, with
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<BR>
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the patches from Tobias' page.
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<BR>
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<P>I've tried the --quality-cal option to SANE, and I've tried at various
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<BR>
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resolutions, and at color, greyscale, and line-art mode, and all have
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<BR>
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the same effect (except that the rainbow colors are grey or black in
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<BR>
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non-color modes).
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<BR>
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<P>Has anybody seen similar problems? Or does anybody have any ideas
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<BR>
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about how to go about troubleshooting/fixing this?
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<BR>
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<P>I have about a week to figure this out; after that, I'll just return
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<BR>
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the scanner, and pay closer attention to model numbers. :-)
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<BR>
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<P>Thanks!
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<BR>
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<P>-----ScottG.
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<BR>
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<P><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?Subject=Re:%20"Rainbow"%20striping%20on%20USB%20HP%20ScanJet%205300C&In-Reply-To=<m3wvcmiocu.fsf@sghome.tir.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0275.html">Eugene Kanter: "xsane-0.68 configure problem fixed?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0277.html">Fred Willingham: "Re: "Rainbow" striping on USB HP ScanJet 5300C"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Dec 26 2000 - 18:24:06 PST</EM>
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