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?
-F
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:
>
> http://www.tir.com/~jonquil/scanner/
>
> 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:
>
> http://www.neatech.nl/oss/HP5300C/
>
> ) 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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>
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