I have a HP OfficeJet 150 Mobile All-in-one Printer/Scanner Unfortunately, the scan size seems to be limited to letter size: ``` > scanimage -- help -d hpaio:/usb/Officejet_150_Mobile_L511?serial=MY2A9720DR ... -y 0..277.707mm [277.707] Height of scan-area. ... ``` Trying to scan a A4 cuts off the bottom of the page. But as there is the limit, it is also not possible to set A4 as size: ``` > scanimage -x 210 -y 296 -d hpaio:/usb/Officejet_150_Mobile_L511?serial=MY2A9720DR scanimage: setting of option --br-y failed (Invalid argument) ``` Some idea, how to fix/change it? Thanks Ben