I have a suggestion concerning the duplex function using the SANE-Backends-1.0.19 : on my hp5590, it writes recto and verso on the same page, and they are upside down. Being on the same page, I cannot use a tool like pdtfk to rotate the part I want. The suggestion would be to write them on separate pages. Another improvement would be to have a parameter for choosing longside or shortside binding, so as to force rotation of everyother page or not. The ultimate improvement would be to ocr the pages to rotate them whenever necessary, a costly improvement that would not bring that much to the two other options.
Frank
