| 摘要 |
PROBLEM TO BE SOLVED: To surely and inexpensively prevent a foreign matter such as sand or dust intruding into a developer supply container from intruding into a developer tank with simple constitution by constituting the developer supply container of a bottle and a supply feeder and providing the supply feeder with a filter member as a component part. SOLUTION: The developer supply container 150 is constituted of the bottle 150a and the supply feeder 92. The feeder 92 is attached to/detached from a mouth part on one end side of the bottle 150a by screwing. The mesh state filter member 93 made of metal material or resin material is mechanically and thermally fixed at the base part 93' of the feeder 92. The base part 93' is a round groove surrounding a valve part and positioned inside a part where the container 150 is screwed in. Since the mesh diameter of the member 93 is set to be smaller than space between a photoreceptor and 1st and 2nd developing rollers or a reverse roller, the intruding foreign matter is not held between the photoreceptor and the rollers. |
