Patent ID: 7694954

Claim:
A sheet pick-up device comprising: a sheet pick-up arm having a sleeve at the outside surface thereof, wherein said sheet pick-up arm further comprises: a frame coupled to said sleeve; and a sheet separation roller disposed inside said frame and sheathed around a driving shaft; said driving shaft penetrated through said sheet pick-up arm and said sleeve; and a collar sheathed around said driving shaft and including at least one flexible vane in contact with the inner surface of said sleeve, wherein the height of said flexible vane relative to the outer surface of said collar is greater than the radial distance between the outer surface of said collar and the inner surface of said sleeve, wherein the height of said flexible vane is completely disposed between said collar and the inner surface of said sleeve, and wherein said collar and said flexible vane rotate within an inner space defined by said inner surface upon rotation of said driving shaft.