摘要 |
PROBLEM TO BE SOLVED: To provide a powder conveyance device that prevents, when driven, even when the powder conveyance device includes a conveyance screw that has been bent, the rotation of the conveyance screw in a powder conveyance path to prevent rotation failure.SOLUTION: There is provided a powder conveyance device including a powder conveyance path that has at least a curved part, and a conveyance screw that has a flexible rotation shaft part arranged in the powder conveyance path and a blade part formed spirally around the outer periphery of the rotation shaft part to convey a powder, where the screw has a conveyance screw curved part located at the curved part of the powder conveyance path, and the surface of at least the blade part at the conveyance screw curved part has a slipping layer containing a compound including silicon. |