| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device capable of vibrating a toner stirring/conveying member while restraining the device from becoming large in size, and restraining an increase in device cost and an increase in power consumption, and to provide an image forming method, an image forming apparatus, and a process cartridge. <P>SOLUTION: The developing device is provided with a collision member 112 that collides with a supply-chamber screw blade member 108 when the screw blade member 108 rotates. By having such the constitution, when the screw blade member 108 collides with the collision member 112, the screw blade member 108 vibrates. Then, deteriorated toner is prevented from sticking to the screw blade member 108, thereby, the stirring/conveying function of the screw blade member 108 can be maintained over a long period of time. <P>COPYRIGHT: (C)2009,JPO&INPIT |
