Patent ID: 8045880

Claim:
A sheet feeding device to feed a sheet in a sheet feeding path, comprising: a plurality of feeding rollers to feed a sheet in the sheet feeding path; and a dust remover unit to remove dust adhered onto a surface of the sheet being fed, wherein the dust remover unit is provided with: a dust absorber roller to absorb dust from a surface of the sheet being fed; a dust remover member arranged to be in contact with a surface of the dust absorber roller to remove the dust from the surface of the dust absorber roller; a conveyer member, arranged to be opposed to the dust remover member, to convey the dust removed by the dust remover member; and a cutter member, arranged in an intervening position between the dust remover member and the conveyer member, to cut the dust removed by the dust remover member into smaller pieces, wherein the dust remover member is formed to have a predetermined width, which extends in a direction perpendicular to the sheet feeding path; wherein the conveyer member is formed to extend to be wider than the predetermined width of the dust remover member, and is an auger screw, which includes a rotatable shaft and spirals with edges to coil around the shaft; wherein the dust removed by the dust remover member is conveyed by rotation of the conveyer member along the spirals; and wherein the cutter member is formed to have a width which is at least equivalent to the predetermined width of the dust remover member, and includes a plurality of blade portions, which are arranged at predetermined intervals on a base plate, the predetermined intervals corresponding to intervals between edges of the spirals.