Comment 96 for bug 179988

> The second dialog gives nice clean vector printing with no
> boxes, except transparent boxes with black lines appearing
> across the page - one seems to be about 2cm in all around,
> and the other is smaller and offset towards top left.

That's the test rectangle I used to find the scaling bug:
https://bugs.launchpad.net/inkscape/+bug/179988/comments/82

Just remove the two "draw (cr)" calls.