Patent ID: 9152087
Filing Date: 2015-10-06
Classification: B65G,G03G

Abstract:
1. A toner transportation device comprising: a transportation screw that has a rotational shaft and a transportation fin formed on an outer circumferential surface of the rotational shaft; a toner transportation pipe that has a circular shape in cross-section, the transportation screw being rotatably positioned in the toner transportation pipe; a support member is attached to the rotational shaft and the support member has a bearing portion having an annular shape and rotatably fitted onto the rotational shaft and has a plurality of leg portions radially protruding outward from an outer circumferential surface of the bearing portion, wherein a tip portion of each leg portion has an arc shape in cross-section as viewed in an axial direction of the toner transportation pipe; and a distance between an axis of the rotational shaft and a tip of each leg portion is greater than a radius of the transportation fin and equal to or less than a radius of an inner circumferential surface of the toner transportation pipe.