Firm copy, n: a scanned hardcopy, like a raster image of a text. It's impossible to edit or parse programmatically, but is still better than a hardcopy in terms of weight, volume, storage, etc. For images, "firmcopy" may refer to reduced-resolution soft copy of the actual image.
It's analogous to "firmware" as something in the middle between hardware and software. Google seems to know nothing about it yet. I hope it catches :)