Patent ID: 7611137
Filing Date: 2009-11-03
Classification: B65H

Abstract:
1. An automatic document feeder, comprising: a main body, having a pedestal and a cover coupling with the pedestal, a document-guiding element mounted between the pedestal and the cover, a passage formed between the document-guiding element and the pedestal and cover, which includes an entering passage, an operating passage and an exiting passage; a feeding roller unit, including a feeding driving roller disposed at the document-guiding element and near to the entering passage, and a feeding idle roller coupling with the feeding driving roller disposed at a side of the entering passage opposite to the feeding driving roller; a drawing-out roller unit, including a drawing-out driving roller disposed at the document-guiding element and near to the exiting passage, and a drawing-out idle roller coupling with the drawing-out driving roller disposed at a side of the exiting passage opposite to the drawing-out driving roller, the drawing-out driving roller and the feeding driving roller being at the same side of the passage; a belt around the feeding driving roller and the drawing-out driving roller to mate with the feeding idle roller and the drawing-out idle roller respectively for flatting and conveying a document into and out of the automatic document feeder wherein the belt is set only to surround the feeding roller unit and the drawing-out roller unit; and an image-handling unit disposed between the feeding roller unit and the drawing-out roller unit, wherein the pedestal defines a concave supporting-surface extending from a front end to a substantial rear end thereof, the supporting-surface opens a hollow recess at substantially the center thereof for receiving the image-handling unit.