Patent ID: 8737855
Filing Date: 2014-05-27
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit configured to form an image on a photosensitive member that is rotated by being driven by a motor; a detection unit configured to detect density information when a plurality of test patches formed by the image forming unit is irradiated with light, wherein the plurality of test patches is formed based on image data, and the image data is used for forming the plurality of test patches having density unevenness in a predetermined period corresponding to density unevenness occurring due to rotational unevenness of the motor in the predetermined period in a sub-scanning direction of the image and being different in start phase of the density unevenness in the predetermined period; and a control unit configured to cause the image forming unit to form an image with density being corrected based on detection results of detecting the density information of the plurality of test patches.