Patent ID: 9134646
Filing Date: 2015-09-15
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image bearing member; a development device that includes a developer bearing member in a development position opposite to the image bearing member to develop an electrostatic latent image formed on the image bearing member, the developer bearing member bearing and conveying a developer including a carrier and toner; a bias applying portion that applies a development bias to the developer bearing member; a degradation sensing portion that senses information related to a level of degradation of toner stored in the development device; an acquisition portion that acquires information on a type of a recording material to which a toner image developed by the development device is to be transferred; and a controlling portion that controls a condition of the development bias applied to the developer bearing member so that a development ability of the development device is decreased when the degradation sensing portion senses information that the level of degradation of toner is more than a predetermined level and the acquisition portion acquires information that smoothness of the recording material is less than a predetermined reference.