Add basic support for Canon R40 scanner
Initial support for Canon R40 SSM scanner with Letter-size ADF. Hardware provides: gray/color, simplex/duplex, full-width, 300/600dpi horizontal, with front mirrored horizontally.
Initial support for Canon R40 SSM scanner with Letter-size ADF. Hardware provides: gray/color, simplex/duplex, full-width, 300/600dpi horizontal, with front mirrored horizontally.