Hi Emerson, I could imagine that it is number format problem in the interface between the backend (NIASH) and the SANE API (a guess)
Could you please try the testtool (backend) on http://sourceforge.net/projects/hp3300backend and make a scan to clarify. Make sure that make, gcc and the libusb headers are installed, before compiling by make - please have a look at the included README how to operate the testtool just call (after having unpacked the tar.gz) > make > ./testtool -s ./test.pic then open "test.pic" with e.g. GIMP Regards Ullrich
