Patent ID: 8714545

Claim:
A paper inverting device for an automatic document feeder, said automatic document feeder comprising a paper exit and a paper tray, said paper inverting device comprising: a first sensor located upstream of said paper exit for detecting a position of a paper; a guiding structure disposed over said paper tray and arranged beside said paper exit, wherein said guiding structure comprises a bent part for stopping said paper; a power mechanism connected with said guiding structure for driving rotation of said guiding structure, wherein said power mechanism comprises a DC motor and a gear, wherein said guiding structure further comprises a post, and said post is fixed on a wheel surface of said gear; and a controller for controlling a rotating direction and a rotating angle of said guiding structure, wherein when said paper is detected by said first sensor, said power mechanism drives rotation of said guiding structure in a first direction, so that a front end of said paper is contacted with said bent part of said guiding structure, wherein when said paper is transmitted to said paper tray in a reverse feeding direction, said power mechanism drives rotation of said guiding structure in a second direction, so that said guiding structure is gradually distant from said paper.