Make sure you are using a 3.x.x version of Graphical Analysis or Logger Pro.

Under the File menu, select Print Data Table. This will send the entire contents of the Data Table to the printer. Be careful; this may be many pages long.

If you select Print or click on the toolbar Print button, you will get a printout of only the data displayed on the monitor screen. Any data that runs off of the screen will not be printed when using this print option.