Re: "Rainbow" striping on USB HP ScanJet 5300C

From: Fred Willingham (
Date: Tue Dec 26 2000 - 18:58:28 PST

  • Next message: Andy Angrick: "RE: Umax 600s/Adaptec 2906 trouble"

    I see the same problem with my UMAX 1220U and the umaxscan program (it
    hasn't been made into a SANE backend, yet.).

    Could it be mechanical, or lamp-related?


    Scott Gifford wrote:

    > Apologies for the long To: list; I haven't been able to determine
    > whether the problem I'm having is caused by Jeremy Hall's
    > (experimental) usb-scsi driver, by the Avision SANE backend, or by
    > something else entirely. If I can narrow it down to one subsystem,
    > I'll make sure to trim the list.
    > I'm seeing weird rainbow-colored stripes, repeating about every
    > half-inch, whenever I scan anything with my HP ScanJet 5300C.
    > Pictures are available at:
    > scan1-crop is the top inch of the scan, and scan1 is the entire image.
    > I can get these stripes to go away by plugging the scanner into a
    > Windows machine, using HP's software once, then plugging it back into
    > my Linux machine. That points to an initialization problem, but I
    > haven't seen anybody else complaining about this scanner exhibiting
    > this problem...
    > I'm using Jeremy Hall's experimental usb-scsi driver patch (from
    > Tobias Nijweide's page at:
    > ) against a 2.4.0-test12 kernel, and the Avision SANE backend, with
    > the patches from Tobias' page.
    > I've tried the --quality-cal option to SANE, and I've tried at various
    > resolutions, and at color, greyscale, and line-art mode, and all have
    > the same effect (except that the rainbow colors are grey or black in
    > non-color modes).
    > Has anybody seen similar problems? Or does anybody have any ideas
    > about how to go about troubleshooting/fixing this?
    > I have about a week to figure this out; after that, I'll just return
    > the scanner, and pay closer attention to model numbers. :-)
    > Thanks!
    > -----ScottG.
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