The epjitsu backend was entirely reverse engineered. No documentation is available from Fujitsu. I tried to pare down the commands sent to the minimum needed to make the scanner operate, and reduced things like size of calibration data.
The patch for the S1100 has much better calibration and more features like serial number reading. I would use it as the basis for any new development. However, Hiroshi Miura has done a great deal of work on his own to merge the S1100 driver, and he has a github repo with his branch. It does not contain all the features of my S1100 patch, but most of them I probably should abandon my work and use his merger instead. https://github.com/miurahr/sane-backends/commits/epjitsu-s1100 I am afraid I'm not able to be much help- I've not touched this code in some time, and have forgotten most of what I knew about the protocol. allan -- "The truth is an offense, but not a sin"
