| 主权项 |
1. An image forming apparatus comprising:
a rotating image bearing member; a charging unit configured to charge a surface of the image bearing member to a charge potential; a latent image forming unit configured to form an electrostatic latent image on the surface of the image bearing member charged by the charging unit; a developing unit comprising a developer bearing member configured to rotate and to bear a developer comprising a toner and a carrier, the developing unit configured to develop the electrostatic latent image formed on the surface of the image bearing member by the toner by applying a development voltage to the developer bearing member; and a controller configured to stop charging of the charging unit and an application of the development voltage after stopping a rotation of the developer bearing member in response to completion of an image formation, the controller being able to perform a first mode in which the developer bearing member rotates during a predetermined operation period from a command of an image forming operation until start of forming the electrostatic latent image by the latent image forming unit, and a second mode in which a total number of rotations during the predetermined operation period is smaller than that in the first mode, the controller switching the first mode and the second mode based on information which influences a toner charging amount. |
