Image forming apparatus

摘要

An image forming apparatus includes an image bearing member; a developer storage portion; a developer bearing member; a toner replenishing device that replenishes toner to the developer storage portion; a power supply that supplies an AC voltage or a voltage in which a DC voltage and an AC voltage are superimposed to the developer bearing member at least during an image forming period; and a controller that performs control such that a scattering toner discharge control mode in which the DC voltage only is applied to the developer bearing member in a non-image forming period so as to generate force such that normally charged toner moves from the developer bearing member to the image bearing member so that the toner is discharged from the developer bearing member to the image bearing member.

主权项

1. An image forming apparatus comprising:
an image bearing member; a developing device that includes a developer bearing member rotatably provided so as to carry a developer and that develops an electrostatic latent image formed on the image bearing member; a toner replenishing device that replenishes toner to the developing device; and a controller that is capable of forming an image by applying a voltage in which a DC voltage and an AC voltage are superimposed to the developer bearing member, wherein the controller is capable of executing a first control mode in which the DC voltage only is applied to the developer bearing member during a non-image forming period, which is a period that an image is not formed on a recording material, based on information on a toner consumption amount so that toner moves from the developer bearing member to the image bearing member, the controller is capable of executing a second control mode in which at least the AC voltage is applied to the developer bearing member during the non-image forming period based on the information on the toner consumption amount so that toner moves from the developer bearing member to the image bearing member, and the controller performs control so that at least the first control mode and the second control mode are selectively executed according to information on a number of printouts of the recording material.