US Patent 7580165 Paper pressing device

A paper pressing device disposed on one side of a paper track of a sheet feed scanner, corresponding to a scanning module on the other side of the paper track is provided. The paper pressing device includes two pivot seats, a pressing block, and an elastic element. The two pivot seats are respectively disposed at two lateral edges of the paper track. The pressing block is located across and above the paper track, and is pivotally disposed between the two pivot seats for being rotated and slid. The elastic element, pressing against the pressing block, is used to provide a normal force to push the pressing block to move linearly and rotate. By adjusting the position and angle of the pressing block, the paper is flattened onto the scanning module.