[sane-devel] FI-5750C Error 4?

[m. allan noah]

well, its been months, but i wanted to say that the fujitsu backend
now supports jpeg data transfer, though you have to use the latest
version of scanimage or update your code to handle it. i also enabled
brightness and contrast for the more recent scanners. do you have the
ability to test current sane cvs snapshots?

allan

On 6/28/07, m. allan noah <kitno455 at gmail.com> wrote:
> On 6/27/07, Simon Glass <sglass at bluewatersys.com> wrote:
> > Hi Alan,
> >
> > Thank you.
> >
> > m. allan noah wrote:
> > > On 6/26/07, Simon Glass <sglass at bluewatersys.com> wrote:
> > >> Hi,
> > >>
> > >> Now that I am able to build SANE (thanks Alan, but no I have no idea
> > >> about libtool) I have the FI-5750C working. It's a wonder to behold.
> > >> However, I am puzzled by an error that I get. It seems that if I try to
> > >> scan a page larger than the setting I have for the ADF size then I get
> > >> an error 4 (Unknown Error).
> > >>
> > >> Further to that, if I try to scan A3 (even with the right ADF setting) I
> > >> get error 4. Maybe it is something slightly wrong with the paper size.
> > >>
> > >> Any ideas on this one?
> > >
> > > error 4 is SANE_STATUS_INVAL, indicating that the scanner was unhappy
> > > with your choice of options. try setting the pagewidth and height
> > > before the x and y values, in case order of operations is important.
> > > show us the exact command line you are using.
> > >
> >
> > Yes I did get it to go by fiddling and I think I know what is wrong (in
> > my code!). I am trying to centre the page to make up for the ADF so I
> > will sort that out and try again. The error 4 happens after the page is
> > scanned. In my view the driver should do the right thing, though. I'll
> > narrow this down a bit and get back to you.
>
> stop trying to center the page. use pagewidth and pageheight options
> along with br-x and br-y, and the backend/scanner will center it for
> you...
>
> > >>
> > >> Another point is that the scanner seems to pause after some pages. Not
> > >> every time, it might scan 6 pages and then pause for a second. But it is
> > >> quite noticeable. I wonder if that is SANE or Fujitsu...
> > >>
> > >
> > > do you have the buffermode option? try turning that on. does the
> > > windows driver behave this way?
> > Haven't tried the windows driver, but I should be able to crank that up
> > with a laptop or something.
> >
> > Will have to look up what buffermode is.
> > >
> > > also- can you verify that color scans look correct, and can you tell
> > > the usb productID for this machine?
> > >
> >
> > found USB scanner (vendor=0x04c5, product=0x1095) at libusb:005:013
> >
>
> thanks. will add to next version.
>
> > For colour I seem to get 3 images side by side across the page. I can
> > probably do a test page with separate RGB to send you an image if that
> > would help. Maybe there is a new file format.
>
> nope- it just needs to be hardcoded in the backend, because i have not
> figured out how to ask the scanner which format it uses. around line
> 1455 in fujitsu.c look for '5650' and add the 5750 to that if(). then
> rebuild/reinstall and color will look fine.
>
> > Is there a way of getting JPEG data from the scanner?
>
> not at the moment. the sane standard does not give a good way to
> return that data, and so i have not completed that code.
>
> allan
>
> >
> > Regards,
> > Simon
> >
> >
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>
>
> --
> "The truth is an offense, but not a sin"
>


-- 
"The truth is an offense, but not a sin"