The first step is to check the document for blank pages. If the document does not contain blank pages, the problem may be related to settings within the application. Check the Page Setup settings in the application you are printing from to ensure that an option to print a separator page / blank page has not been selected.
Try printing again. If a blank page is still fed between pages or print jobs, there is a setting in the Epson printer driver which should stop this from occurring:
Open the printer driver from the Devices and Printers folder.
In the folder, right-click on the Epson printer icon, then left-click on Printer Properties.
On the General tab, click Printing Preferences.
Click on the Maintenance tab.
In Maintenance, click on the Speed & Progress / Extended Settings... button at the bottom of the window.
Click into the box beside Skip Blank Page so a tick is beside the setting.
Click OK to this window, and the other driver windows.
Restart the computer.
Once restarted, try printing again.
If the issue is not resolved after trying the above another possible cause is a setting within the Windows section of a printer driver. If this is enabled, it will send a 'Separator Page' to the printer. This can be turned off following the instructions below.