Patent ID: 11960219
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. An image forming apparatus comprising:
a photosensitive member;
a charging device configured to charge a surface of the photosensitive member to be uniformly charged;
an exposure device configured to form an electrostatic latent image by exposing the surface of the photosensitive member;
a developing unit having a developing rotary member that forms a toner image onto the surface of the photosensitive member by causing toner included in a developer to adhere to the electrostatic latent image;
a transfer unit configured to transfer the toner image onto a sheet or an intermediate transfer member;
a sensor configured to detect density unevenness of the toner image;
a generation circuit configured to generate a developing voltage, which is a developing bias applied to the developing rotary member, that includes a direct current (DC) component and an alternating current (AC) component, and a charging voltage supplied to the charging device; and
a controller configured to control the generation circuit to modulate the charging voltage to be modulated based on a correction component such that the density unevenness is reduced,
wherein the controller is further configured to restrict the correction component such that fogging of toner that may occur on a non-exposure region which is not exposed by the exposure unit and adhesion to the photosensitive member of carrier included in the developer, which becomes the source of the toner image, are reduced.