It's likely that your browser print settings have margins enabled.

As we suggest using Firefox 24.2, this is what we'll focus on.

First, per the below screenshot, click on the orange Firefox button on the top left of your screen, hover your mouse over the "print" selection, and then click on "Page Setup"

On the next screen that pops up, click on the Margins & Header/Footer tab, and set all margins to 0.0, and all headers and footers to blank per the below screenshot. Click "ok" and you're done!

This will remove any extra white space that your browser is adding to your eforms, labs, etc that you are trying to print and continually getting that extra page with little to no details on it!