| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of abnormal sound, scratches on the surface of a photoreceptor, image defects due to scratches on the surface of a photoreceptor, and poor cleaning due to clogging of waste toner by preventing eccentricity of a flexible screw.SOLUTION: A powder conveying device 1 has a conveyance path 11 for conveying powder, a flexible rotation shaft 17 having flexibility that is arranged in the conveyance path, and a conveyance blade 19 fixed spirally to the outer peripheral part of the flexible rotation shaft, and includes a flexible screw 15 that rotates to convey powder in the conveyance path in a predetermined direction. The powder conveying device 1 further includes a regulating screw 21 having a spiral regulating blade 25 for suppressing eccentricity of the flexible screw arranged adjacent to the flexible screw. |
