Sheet discharge device and image scanning apparatus

An image scanning apparatus comprising:

• an image scanner configured to scan an image on a sheet;
• and
• a sheet discharge device configured to discharge the sheet, the sheet discharge device comprising:
• a discharge roller rotatable to apply a conveyance force to the sheet and discharge the sheet;
• a follow roller rotatable about an axis, the follow roller being configured to nip the sheet with the discharge roller and to rotate by following rotation of the discharge roller, the follow roller being harder than the discharge roller;
• a paddle rotatable together with the follow roller, the paddle including protrusions and recesses arranged alternately in a circumferential direction of the axis, each of the protrusions protruding farther radially outward than an outer circumference of the follow roller to contact the sheet, each of the recesses being recessed radially inward between two of the protrusions adjacent to each other in the circumferential direction;
• and
• a groove located between the follow roller and the paddle in a width direction, the width direction being parallel to a direction in which the axis extends, the groove being located at a same position as an end of the discharge roller in the width direction, the groove being recessed one round farther radially inward than the outer circumference of the follow roller.