Every time I print, the printer feeds an extra blank page after every printed page. How do I get it to stop this?

I have an HP D7360 Photosmart that has been doing the exact same thing. This has been driving me crazy, especially when I have to print a lot of pictures at once or a long report.
After uninstalling and reinstalling the printer a dozen times, installing every possible driver I could find for it, and even swapping out the USB cable (who knows...stranger things have been the cause of problems!!), I just found the fix for this.
Go to the Properties page of the printer (for mine, I open the printer, click "Printer", then select "Properties"), then go to the Advanced tab. At the bottom are a few checkboxes, one of them being "Enable advanced printing features". I unchecked this and do not have the problem with the extra page.
I am not really sure, at this point, what else may be turned off, but just printed a test page and WOOOHOO...no more blank page came out right after it.
Hope this helps you and that the "advanced printing features" aren't something that negatively impacts your and my ability to print quality pictures and documents.
I love this printer otherwise. Amazing picture quality!!!

The blank page ejected after every print job may be a separator page that is used to separate out multiple print jobs.
Since you have not mentioned the printer model, i cannot provide u with exact steps.
However for your idea, these r typical steps for HP printer.
Please follow the steps given below to disable the separator page from getting ejected.
1. Click on Start, Printers amd Faxes.
2. Right-click the Deskjet printer icon.
3. Select Properties and click on the General tab or advanced tab.
4. Locate the Separator page box and from the drop down box, select none option.
5. Click on Apply, Ok.

Hope this helps you buddy.