Patent ID: 8401410
Filing Date: 2013-03-19
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit including a photosensitive member, an exposure unit configured to form a latent image on the photosensitive member, and a developing unit configured to develop the latent image formed on the photosensitive member with toner, and configured to transfer a toner image developed on the photosensitive member to an image bearing member conveyed in a direction orthogonal to a longitudinal direction of the photosensitive member; and, a control unit configured to cause the image forming unit to form detecting images including pattern images of a plurality of densities on the image bearing member to adjust gradation of the toner image formed on the photosensitive member by the image forming unit, wherein the control unit causes the image forming unit to form a first detecting image and a second detecting image on the image bearing member, a density range of the first detecting image defined by a pattern image of the maximum density and a pattern image of the minimum density included in the first detecting image at least partially matches a density range of the second detecting image defined by a pattern image of the maximum density and a pattern image of the minimum density included in the second detecting image, and the control unit causes the image forming unit to form the first detecting image and the second detecting image at different positions in the longitudinal direction and at different positions on the image bearing member in the direction orthogonal to the longitudinal direction.