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<TITLE>sane-devel: Re: "Rainbow" striping on USB HP ScanJet</TITLE>
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<META NAME="Author" CONTENT="Fred Willingham (fcw@worldpath.net)">
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<META NAME="Subject" CONTENT="Re: "Rainbow" striping on USB HP ScanJet 5300C">
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<H1>Re: "Rainbow" striping on USB HP ScanJet 5300C</H1>
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<!-- received="Tue Dec 26 18:30:24 2000" -->
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<!-- sent="Tue, 26 Dec 2000 21:58:28 -0500" -->
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<!-- name="Fred Willingham" -->
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<!-- subject="Re: "Rainbow" striping on USB HP ScanJet 5300C" -->
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<!-- inreplyto="m3wvcmiocu.fsf@sghome.tir.com" -->
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<STRONG>From:</STRONG> Fred Willingham (<A HREF="mailto:fcw@worldpath.net?Subject=Re:%20"Rainbow"%20striping%20on%20USB%20HP%20ScanJet%205300C&In-Reply-To=<3A495AD4.2070108@worldpath.net>"><EM>fcw@worldpath.net</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Dec 26 2000 - 18:58:28 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0278.html">Andy Angrick: "RE: Umax 600s/Adaptec 2906 trouble"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0276.html">Scott Gifford: ""Rainbow" striping on USB HP ScanJet 5300C"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0276.html">Scott Gifford: ""Rainbow" striping on USB HP ScanJet 5300C"</A>
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I see the same problem with my UMAX 1220U and the umaxscan program (it
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<BR>
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hasn't been made into a SANE backend, yet.).
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<BR>
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<P>Could it be mechanical, or lamp-related?
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<BR>
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<P>-F
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<BR>
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<P>Scott Gifford wrote:
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<BR>
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<P><EM>> Apologies for the long To: list; I haven't been able to determine
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</EM><BR>
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<EM>> whether the problem I'm having is caused by Jeremy Hall's
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</EM><BR>
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<EM>> (experimental) usb-scsi driver, by the Avision SANE backend, or by
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</EM><BR>
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<EM>> something else entirely. If I can narrow it down to one subsystem,
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</EM><BR>
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<EM>> I'll make sure to trim the list.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I'm seeing weird rainbow-colored stripes, repeating about every
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</EM><BR>
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<EM>> half-inch, whenever I scan anything with my HP ScanJet 5300C.
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</EM><BR>
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<EM>> Pictures are available at:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> <A HREF="http://www.tir.com/~jonquil/scanner/">http://www.tir.com/~jonquil/scanner/</A>
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> scan1-crop is the top inch of the scan, and scan1 is the entire image.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I can get these stripes to go away by plugging the scanner into a
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</EM><BR>
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<EM>> Windows machine, using HP's software once, then plugging it back into
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</EM><BR>
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<EM>> my Linux machine. That points to an initialization problem, but I
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</EM><BR>
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<EM>> haven't seen anybody else complaining about this scanner exhibiting
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</EM><BR>
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<EM>> this problem...
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I'm using Jeremy Hall's experimental usb-scsi driver patch (from
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</EM><BR>
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<EM>> Tobias Nijweide's page at:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> <A HREF="http://www.neatech.nl/oss/HP5300C/">http://www.neatech.nl/oss/HP5300C/</A>
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> ) against a 2.4.0-test12 kernel, and the Avision SANE backend, with
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</EM><BR>
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<EM>> the patches from Tobias' page.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I've tried the --quality-cal option to SANE, and I've tried at various
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</EM><BR>
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<EM>> resolutions, and at color, greyscale, and line-art mode, and all have
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</EM><BR>
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<EM>> the same effect (except that the rainbow colors are grey or black in
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</EM><BR>
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<EM>> non-color modes).
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Has anybody seen similar problems? Or does anybody have any ideas
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</EM><BR>
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<EM>> about how to go about troubleshooting/fixing this?
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I have about a week to figure this out; after that, I'll just return
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</EM><BR>
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<EM>> the scanner, and pay closer attention to model numbers. :-)
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Thanks!
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> -----ScottG.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> --
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</EM><BR>
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<EM>> Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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</EM><BR>
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<EM>> 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=<3A495AD4.2070108@worldpath.net>">majordomo@mostang.com</A>
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>
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</EM><BR>
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<P><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=<3A495AD4.2070108@worldpath.net>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0278.html">Andy Angrick: "RE: Umax 600s/Adaptec 2906 trouble"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0276.html">Scott Gifford: ""Rainbow" striping on USB HP ScanJet 5300C"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0276.html">Scott Gifford: ""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 - 18:35:33 PST</EM>
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