Thanks to all for your efforts in the development of the CUPS driver/SANE backend for Kodak Aio printers!
 
I had previously successfully installed the CUPS driver and would now like to document my experience installing the SANE backend for Kodak Aio for an ESP 5250 printer.

 I run Ubuntu 10.10 on an old IBM Thinkpad laptop and I am a user rather than a developer. This process took about 8 +/- hours of reading release notes, readme files, man pages, and forum posts and a good bit of trial and error. Here's what finally worked for me: 

1. From sourceforge.net/projects/cupsdriverkodak/files/scanning-sanebackend Downloaded kodakaio-02.4.tar.gz Extracted to /home/kodak directory 

2. Installed 3 of the recommended packages. libusb-dev was already installed on my system. sudo apt-get install libcups2-dev sudo apt-get install libcupsimage2-dev sudo apt-get install libcupsdriver1-dev 

3. Followed Release Notes instructions: cd kodakaio-02.4 cd sane-backends-kodakaio-02.4 ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var BACKENDS=kodakaio make sudo make install 

4. Edited the file /etc/sane.d/kodakaio.conf # net autodiscovery (I don't use wifi with this printer) usb 0x040a 0x4041 (ESP 5250 usb codes) scanimage -L still did not see the scanner 

5. Edited the file /etc/sane.d/dll.conf kodakaio scanimage -L now sees the scanner as root only (Note: The Release Notes seem to be in error here, referencing kodakaio.conf instead of dll.conf. As corrected, steps 4 and 5 should be reversed to match the Release Notes.) 

6. Created a scanner group using system->Administration->Users and Groups and added myself to this group. 

7. Created /etc/udev/rules.d/90-libsane.rules LABEL="libsane_usb_rules_begin" # Kodak ESP 5250 ATTRS{idVendor}=="040a", ATTRS{idProduct}=="4041", MODE="0664", GROUP="scanner", ENV{libsane_matched}="yes" LABEL="libsane_usb_rules_end" 

8. scanimage -L now sees the scanner as myself(and root)

scanimage > mytestscanfile Simple Scan XSane Image Scanning Program Are all working under Ubuntu 10.10 

I hope this summary helps someone save a few hours of research.