| 摘要 |
PROBLEM TO BE SOLVED: To reduce a possibility that a developer is discharged to the outside through a discharge path for discharging air in a container to the outside of the container.SOLUTION: A developer holder 340 is a cylindrical member, holds the developer on a surface thereof, and supplies the developer to an image holder on which an electrostatic latent image is formed, while being rotated. A container 341 stores the developer holder 340. A discharge path forming member 342 forms a discharge path 343 for discharging the air from the inside of the container 341 to the outside. A magnet roller 344 is provided inside the developer holder 340, is a columnar member, and generates a determined magnetic field in a side surface by a magnetic material such as a permanent magnet fixed inside. The magnetic material of the magnet roller 344 generates a magnetic field acting on the developer in the discharge path 343, so as not to discharge the developer to the outside of the container 341. |
