The printing of the URL is a function of your browser. You'll notice the same thing if you print any other web page.
Simply click File, Page Setup (or Print Setup), find the header/footer section, and remove the tag/key etc that controls the URL being displayed. Then click okay.
This may affect all printouts from your browser.
.
Zen Cart - putting the dream of business ownership within reach of anyone!
Donate to: DrByte directly or to the Zen Cart team as a whole
Remember: Any code suggestions you see here are merely suggestions. You assume full responsibility for your use of any such suggestions, including any impact ANY alterations you make to your site may have on your PCI compliance.
Furthermore, any advice you see here about PCI matters is merely an opinion, and should not be relied upon as "official". Official PCI information should be obtained from the PCI Security Council directly or from one of their authorized Assessors.