| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device which is capable of forming images of high quality without unevenness of a developer even during high-speed printing by efficiently agitating and carrying the developer in a developing tank so as to satisfactorily circulate the developer, with a simple configuration. <P>SOLUTION: A developing device 23 includes a first agitating and carrying rotating member 232 for agitating and carrying toner in an enclosure 234, a second agitating and carrying rotating member 233, and a developing roller 231 for supplying the toner to a photoreceptor drum 21. In the first agitating and carrying rotating member 232, a plurality of agitating blades 232b1 to 232b5 are arranged on a revolving shaft 232a disposed approximately in parallel with the developing roller 231, so as to be inclined in an axial direction of the revolving shaft 232a. With respect to agitating blades 232b1 to 232b5, adjacent agitating blades 232b2 and 232b3 are formed asymmetrically with a normal L1 passing a center of rotation, and an odd number of asymmetrical agitating blades are alternately arranged. <P>COPYRIGHT: (C)2007,JPO&INPIT |
