Till, I appreciate your suggestions. I recognize your name from this and
Printing Mail Lists. I know that you probably know well what you are
talking about. The problem is you are talking over my head. In fact I gave
up on putting anything on github because I am so stupid I do not understand
it .
This form of scanner driver is not a SANE driver but a Scanner
Application, an emulation of a driverless (in your case eSCL, other
driverless protocols are WSD and IPP Scan) scanner by software, where
the emulator communicates with the actual, physical scanner, advertises
the presence of the