Patent ID: 8246037
Filing Date: 2012-08-21
Classification: B65H,H04N

Abstract:
1. An automatic document feeder disposed on a scanning platform for feeding a first paper or a second paper, a thickness of said first paper is smaller than a thickness of said second paper, said automatic document feeder comprising: a feeder casing having a bottom part in contact with said scanning platform; a paper feeding channel disposed within said feeder casing and passing through a region between said bottom part of said feeder casing and said scanning platform; a pressing structure disposed on said bottom part of said feeder casing for pressing said first paper or said second paper; a guiding notch formed in said pressing structure for guiding said second paper to be moved through said paper feeding channel; plural first guiding ribs arranged downstream of said guiding notch for guiding said second paper to be moved through said paper feeding channel; and plural second guiding ribs arranged beside said plural first guiding ribs for guiding said first paper to be moved through said paper feeding channel, wherein a height of said plural first guiding ribs is smaller than a height of said plural second guiding ribs.