NewLeaf has a simple BitmapLeft function to place a screen snap or scanned image at the left margin. This takes as argument a two-element vector giving the name of the bitmap file (this assumes .BMP if no extension is given) and an optional scan frequency (default 96dpi).

leaf.BitmapLeft 'myscreen'       © Screen snap
leaf.BitmapLeft 'artwork' 300    © Scanned image

The bitmap will be scaled to match the resolution of the current printer.