Zend certified PHP/Magento developer

why does my Epson WF-7710 keep make paper jam?

Every time I try to print with the above printer on both sides of the paper, once it prints one side and tries to switch, there is a bit of a noise (hard to describe) and then the paper reports paper jam. If I print only on one side, it seems to print fine.

What could be the problem? I did what the paper error suggested, and both checked at the rear and opened it up, and indeed there was a paper jam, but once I remove it, the same thing repeats.