Hi, I also just started trying to write a backend (GL842). I never did that before and havn't been too successful so far. Let me also point out that http://www.sane-project.org/contrib.html wasn't very helpful in my mind. On the other hand, I guess it is difficult to give a general description of the process. What did help was to take a screwdriver and open the scanner. Look at all chips write down or photograph the chip's names and look for data sheets. If you can't find them with google, looking at a place like www.newark.com might help. Second, do write to the company. I really expected nothing when I wrote to their support address. But they actually offered support (which hasn't happened yet though). If you write to the support address you might want to add the sentence: "Please forward this mail to your engineering department!" Or something like that. Definitely the most useful thing so far was to look at a similar backend. And for that, I think you need to know the chipset. So try to google for it, otherwise take the screwdriver and be careful not to damage it.
Finally: I totally agree with: Do it! Good Luck, Max
