Ah, printing on a printer. I thought you meant you wanted to stop it from printing it on the screen in the status bar, when you said "below." (Our systems put the url on the top line of the paper. The date and page count are on the bottom.)
What the printer prints on paper is determined by the browser itself, the local browser settings (page setup), and the local printer driver settings.
If you are the system administrator, you can change these settings on each user's computer, and possibly protect them from user changes.
But as a webmaster operating over the internet, you have no right to change these settings. They belong to the owner of the client computer.
Some of the information is provided for copyright notice reasons.
In IE Browser,Goto File--> Page Setup --> in the Page Setup window, have Group box name as "Header and Footer" under this "Footer" text box in text "&u&b&d" will availble. Just remove the "&u" then automatically URL will remove from Bottom of the Printed Page.:)