Patent ID: 8725015
Filing Date: 2014-05-13
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image bearing member on which an electrostatic image is formed; a development device that has a developer bearing member capable of bearing a developer and develops the electrostatic image at a developing region; a sensing portion that senses an environmental temperature around the development device; and a controller that can perform a mode in which, during a continuous image forming job in which a plurality of recording materials are continuously image-formed, in a developing period that an image forming area of the image bearing member corresponding to recording material passes the developing region, the controller drives the developer bearing member at a first rotating speed, and in at least a part of a non-developing period that a non-image forming area of the image bearing member corresponding to an area between recording materials passes the developing region, the controller drives the developer bearing member at a second rotating speed which is slower than the first rotating speed, wherein based on a sensing result of the sensing portion, the controller decides to perform the mode or not to perform the mode.