Batch scanning on ADF did not work:

{{{scanimage : [hp5590] Top Y (0) + pixels Y (106680) exceedes max Y 4200 scanimage: sane_start: Invalid argument}}}}

-y 297.699mm solution as found [http://www.ubuntu-forum.de/artikel/60866/scanimage-hp5590-top-y-0-pixels-y-106680-exceedes-max-y-4200-scanimage-sane-start-invalid-argument.html#post395803].