SHEET FEEDING SHAFT

PROBLEM TO BE SOLVED: To provide a sheet feeding shaft capable of accurately feeding paper in the object direction while holding the paper in an accurate position, when a characteristic of the paper is changed by improving a projection shape, when forming a projection by plastic working to a metallic round bar peripheral surface. SOLUTION: This sheet feeding shaft is formed by the plastic working out of a plurality of projections of rising in the rotational direction on a circumferential surface of a metallic round bar opposed by sandwiching a sheet between a feed roller and itself. The projections are formed in a pair by a center punching work tool in opposed two places of the metallic round bar peripheral surface, and are composed of a plurality of spike-shaped projections contrary to each other in the rising direction, and are formed so that an apex angle of the projection shape when viewed from the direction of the work tool becomes 70 degrees to 120 degrees, and a plurality of projections contrary to each other in the rising direction are also arranged in a row along the circumferential direction and the axial direction. COPYRIGHT: (C)2011,JPO&INPIT