Blank page between each page.

I presume ther is more than one page per print job and this is not just a page seperator that someone has enabled ( a page inserted between each print job), however I am including instructions on how to turn off the page seperator at the end of my reply

Most likely cause of this is that the settings on the printer make the printer think that it has insufficient paper left on the sheet to to complete the printing, so it adds an extra page. This is a settings issue which may have more than one cause, use the link to eliminate at least some of the likely offenders

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01671543&tmp_task=solveCategory&lc=en&dlc=en&cc=us&product=3204785&lang=en

The sepperator page issue
Open the properties dialog box by by opening Printers and Faxes, Right-click your printer, and then click Properties .
In the Properties dialog box, click the Advanced tab click the ‘Separator Page’ button and delete all templates listed in the Separator Page box, and then click OK . If you deleted any templates, click Apply , and then click OK . If you did not delete any templates, click OK .