A couple of times a year, we hear from someone about disassembling a scanner and repurposing the components. Generally, we don't see much of the project after that. Well, here's an interesting one that has reached the prototype phase. This uses basically plain scanimage --batch-prompt and the canon_dr backend.
https://code.google.com/p/linear-book-scanner/ allan -- "The truth is an offense, but not a sin"