| 摘要 |
PROBLEM TO BE SOLVED: To prevent leakage of toner or developer due to a decrease in sealability without replacing a bearing.SOLUTION: An image forming apparatus has a photoreceptor on which an electrostatic latent image is formed and a developing unit that attaches toner to the photoreceptor, and is provided with a sealing member 66 in the developing unit between a rotation shaft 631 and a bearing 633 of a screw 63 that conveys developer. The image forming apparatus further includes a movement mechanism 67 for moving the rotation shaft 631 of the screw 63 only in a single direction on the shaft direction. |
