| 摘要 |
A sheet feeder includes: a rotatable sheet separation roll having an outer circumferential surface, a pressing member urged onto the outer circumferential surface of the sheet separation roll; and a flexible frictional member having a plate shape interposed between the sheet separation roll and the pressing member, the flexible frictional member being supported at one end portion upstream of the pressing member and the sheet separation roll in a sheet feed direction, wherein a surface of the pressing member confronting the sheet separation roll projects toward the sheet separation roll in a section thereof perpendicular to an axial line of the sheet separation roll.
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