| 摘要 |
<p>An image forming apparatus includes 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, and a bias applying portion that applies a development bias to the developer bearing member. A degradation sensing portion senses information related to a level of degradation of toner stored in the development device, and an acquisition portion acquires information on a type of a recording material to which a toner image developed by the development device is transferred. In addition, a controlling portion controls a condition of the 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 less than a predetermined level and the acquisition portion acquires information that smoothness of the recording material is more than a predetermined reference.</p> |
