Patent ID: 7665728

Claim:
A document feeding device comprising: a document placing tray; a document ejection tray disposed above the document placing tray; a feeding path extending from the document placing tray through a reading position to the document ejection tray; a first reversal path which branches from the feeding path at a position downstream of the reading position, and which is configured to guide a document toward a space portion between the document placing tray and the document ejection tray; a second reversal path which branches from the first reversal path, which is connected to the feeding path at a position upstream of the reading position and which is configured to guide the document from the first reversal path to the reading position; and a reversing mechanism which is arranged in the first reversal path, and which is configured to temporarily eject part of the document from the first reversal path to the space portion between the document placing tray and the document ejection tray, and feed the document from the first reversal path to the second reversal path, wherein the document ejection tray has a flap portion which is arranged in an upstream side of the document ejection tray, and which is configured to rock up and down to provide a first mode and a second mode, wherein in the first mode a first ejected document is placed on the document ejection tray and a second ejected document subsequently from the first ejected document is stacked on the first document, and wherein in the second mode a third ejected document is placed on the document ejection tray and a fourth ejected document subsequently from the third ejected document is inserted between the third document and the document ejection tray.