| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrophotographic image forming apparatus suitably carrying out detection of an environment around each developer becoming a control factor when controlling the developing condition of each developing device in an image forming apparatus provided with a plurality of developing devices. <P>SOLUTION: The electrophotographic image forming apparatus provided with the plurality of developing devices for developing an electrostatic latent image formed on a photoreceptor drum with the developer is provided with: humidity sensor units 14a and 14b installed in at least two pieces of the developing devices 4Y and 4K among the plurality of developing devices 4Y, 4M, 4C and 4K; and a control means controlling image forming conditions according to the detection results. <P>COPYRIGHT: (C)2009,JPO&INPIT |
