[sane-devel] ScanJet 7450C, avision-2003-02-08-1127-sane-1.0.10.patch, Redhat 8.0 - inverted images

[Rene Rebe]

Hi.

On: Mon, 10 Feb 2003 13:06:27 -0800,
    TomF <TomF@sjpc.org> wrote:

> I installed sane-1.0.10 and avision-2003-02-08-1127-sane-1.0.10.patch=
 on
> my Redhat 8.0 system, and modified /etc/sane.d/hp.conf to contain:
> =

> scsi HP
> /dev/scanner
> /dev/usb/scanner0
>   option connect-device
> =

> Changing /dev/scanner to link to /dev/usb/scanner0 did not work, so I=

> changed it back to the Redhat 8.0 default:  -> /dev/sgf

The kernel's scanner driver is not used for the USB Avision scanners
(so /dev/usb/scanner* is not the right device-node).

Insead the hpusbscsi driver is used to emulate a scsi-device.

> After I rebooted, scanimage worked, but produced a negative image.  =


What do you mean with "negative" image? You mean it is "inverted"?
Which scanmode (lineart, dithered, gray, color) do you use?

> I installed xsane-0.84-8.i386.rpm, but it looked for libraries in
> /usr/lib while 1.0.10 had put them in /usr/local/lib.  I put links in=

> /usr/lib to resolve this.
> =

> xsane worked, but also produced negative images.  I was thrashing aro=
und
> trying to get sane working before I found out about the patch, and I =
may
> have changed something and forgot to record the change.
> =

> It looks like I need a tutorial that describes how to pruduce plain
> black and white images.  Where could I find one?

- Ren=E9

--  =

Ren=E9 Rebe - Europe/Germany/Berlin
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