| 摘要 |
PURPOSE:To perform development whereby a full color image with satisfactory color reproducibility can be obtained and to perform fast development at the time of development for obtaining a monochrome image in the developing unit of an electrophotographic device capable of outputting a monochrome image and a full color image. CONSTITUTION:The rotation direction of a monochrome developing roller 41B and the rotation directions of full-color developing rollers 41Y, 41M and 41C are opposed to each other in the developing device of the electrophotographic device provided with the monochrome developing roller 41B composed of a flexible porous member for obtaining a monochrome image and rotated and driven in contact with a photosensitive body 1 and plural full-color developing rollers 41Y, 41M and 41C composed of flexible porous members for obtaining a full color image and rotated and driven in contact with the photosensitive body 1. |
