Comment 50 for bug 29622

in the location bar, type about:config, then click in the box in the window, type print, click filter, then click something like this:

print.(printername).print_margin*

and then type 0.2 or 1.0.
It means how much space the headers and footers can take up. If you just want to show the text, type 0.175 with the smallest line between the webpage and the text in Print Preview.

Works in 1.5.01 and 1.5.02