Patent ID: 8485521
Filing Date: 2013-07-16
Classification: B65H,H04N

Abstract:
1. An automatic document conveying device, comprising: a document feeding portion that feeds a document from a document stacking tray; a conveying portion that conveys the document which is fed, to a document reading portion; a discharge portion that discharges the document after being read to a discharge tray; a branching guide that switches a conveying path so that a second surface is read after the first surface of the document is read; a contact portion that is provided on the branching guide; a switchback roller pair for sending the document to the conveying portion again after the conveying path is switched by the branching guide; a biasing member that biases the switchback roller pair in a direction of bringing the switchback roller pair into mutual contact; a lift member that swings to bring the switchback roller pair out of mutual contact; one drive source that provides a drive force; a drive member that is fixed to the drive source; a driven member that transmits the drive force from the drive member; and a cam that is moved by the driven member, wherein the cam comprises a first cam that is moved by the driven member so as to rotate the lift member in a direction of bringing the switchback roller pair out of mutual contact against a biasing force of the biasing member, and a second cam that makes contact with the contact portion and that, by being moved by the driven member, makes the contact portion swing so that, as the contact portion swings, the conveying path of the branching guide is switched, and wherein the first and second cams are provided integrally.