Erasing device

An erasing device comprising:

• a conveyance unit that conveys a sheet along a conveyance path;
• a pair of rotating brushes provided on opposite sides of the conveyance path and opposed to each other and positioned in a width direction perpendicular to a conveying direction of the sheet conveyed by the conveyance unit, the rotating brushes being configured to rotate so that a brush tip portion closest to the conveyance path has a tangential velocity in the same direction as the conveying direction and the tangential velocity of the brush tip portion being greater than a conveyance speed of the sheet so that a corner fold portion which occurs on the sheet is contacted and corrected by the rotating brush tip portion;
• a pair of correction guides provided on opposite sides of the conveyance path and opposed to each other and on the upstream side in the conveying direction from the rotating brushes, the correction guides being shaped so that first ends of the correction guides on the upstream side in the conveying direction define a first width of the conveyance path between the first ends, and second ends of the correction guides on the downstream side in the conveying direction define a second width of the conveyance path between the second ends, the second width being larger than the first width;
• and
• an erasing unit provided downstream in the sheet conveyance direction than the rotating brush, the erasing unit erasing an image which is formed on the sheet.