Patent ID: 8159515

Claim:
An image forming apparatus which forms an image on a recording medium in one of a first image forming mode and a second image forming mode to form an image with higher quality than quality of an image formed in the first image forming mode, the image forming apparatus comprising: an image forming unit including a photosensitive member which is rotated by a driving unit and on which an electrostatic latent image is formed, and an exposure unit configured to expose the photosensitive member to form the electrostatic latent image, and to form an image by transferring to the recording medium a toner image acquired by developing the electrostatic latent image formed on the photosensitive member using toner; a detection unit configured to detect that a reference position disposed on the photosensitive member has reached a predetermined position while the photosensitive member is rotating; a storage unit configured to store correction data for correcting unevenness of potential characteristics of the photosensitive member; and a control unit configured to control an exposure intensity of the exposure unit at each position on the photosensitive member based on the correction data, wherein in a case in which the image forming unit forms an image in the first image forming mode, the control unit allows the exposure unit to start exposing the photosensitive member regardless of a detection of the reference position, wherein in a case in which the image forming unit forms an image in the second image forming mode, the control unit allows the exposure unit to start exposing the photosensitive member in response to a detection of the reference position, and controls the exposure intensity based on the correction data.