I just gave up on using my new HP Officejet J4680 Series from shrink-wrapped software. Will be using hand-text_editor_manual method until such time as I can go through the headers for TWAIN. We must assume at this point that any such work will present unanticipated failures if we do not call,…..
Not intending to be difficult or make rebuttal, what is your question? That code I found gets bytes from an image file using established Java method calls, to do what I think you as will need be that we write the driver to talk to the device. That resolves to reading the headers for Twain. Have you read them? Basic idea is that is 2171 lines of defines, with two or three entry points for system calls so I need to ask what if any compiler are you using?