Download the source code, and start reading. On Mon, Aug 31, 2020 at 4:25 PM Michael Rose <[email protected]> wrote: > > HI Allan, > > Thanks for your input. For my purposes I probably won't need to scan beyond > 40 inches. I use the scanimage frontend on the command line. Where can I > find information on how to modify the SANE backend for this model? If the > value for document length is somehow sent to the scanner before the scan then > I would like to be able to put in my own values for this. I think this way I > could discover what the firmware limit is. Do you know where can I find > information on how to modify the Canoscan 9000F backend driver or any > information related to modifying/enhancing SANE scanner drivers? Thanks. > > Mike > > ________________________________ > From: m. allan noah <[email protected]> > Sent: 31 August 2020 20:03 > To: Michael Rose <[email protected]> > Cc: [email protected] <[email protected]> > Subject: Re: [sane-devel] Canon Canoscan 9000F customise document length > > There is no reason to think that any particular scanner will support > that capability. Many of them get information about the total length > of the scan before they start, and there is a firmware limit to that > value. > > You will need a simplistic scanner that just streams data of an > indeterminate length until the host stops asking for data. > > allan > > On Mon, Aug 31, 2020 at 3:05 PM Michael Rose <[email protected]> wrote: > > > > Hello everyone, > > > > I'm new here so please forgive me if I'm not doing things right. I was > > hoping someone could help me. I am trying to modify a Canonscan 9000F > > scanner so that I can scan A4 width documents of any length beyond 11.7 > > inches. I can modify the scanner enclosure and extend or replace the glass > > platter. I need help with modifying the sane backend driver. Does anyone > > know if this is possible? How would I go about doing this? I Any > > suggestions would be most welcome. Thanks. > > > > Mike > > > > -- > "well, I stand up next to a mountain- and I chop it down with the edge > of my hand"
-- "well, I stand up next to a mountain- and I chop it down with the edge of my hand"
