Are you trying to download renderings from model pages, or are you trying to simply print an image of the 3D view of the workshop?
If you are trying to download the renderings for printing, then simply go to the corner with the download button and press download.
If you are trying to get the image of the 3D view, simply press C while you are in the workshop. Try disabling the grid floor before doing so.
I hope this is at least somewhat helpful. 😃