| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a color image forming apparatus having a developing device, which is constituted so that the storage amount of a developing device in which black developer is stored is made large, and flow of the supply and collection of developer on a developing roller with a developing device in which color developer is stored is not changed, and to provide a process cartridge attached to the same. <P>SOLUTION: The color image forming apparatus has a plurality of developing devices equipped with the developing roller comprising a developing sleeve and a fixed magnetic pole member, a stirring member, a collection and supply member, a regulation member, and a developing device frame body. At least one of the plurality of developing devices is constituted to make developer storing capacity different and also the dimension of the outside diameter of the collection and supply member different from the other developing devices, while it is constituted to make an angle distribution value between a plurality of fixed magnetic poles in the fixed magnetic pole member the same as the other developing devices. <P>COPYRIGHT: (C)2008,JPO&INPIT |
