Patent ID: 9042754
Filing Date: 2015-05-26
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a photosensitive member; a rotation member that rotates to rotate the photosensitive member; a light emitter that emits light to the photosensitive member and forms a latent image; a detector including a detecting member positioned at a detecting position, wherein the detector detects that the latent image on the photosensitive member reaches the detecting position by detecting a change in a current flowing between the detecting member and the photosensitive member, with the detecting member being a charging member configured to charge the photosensitive member, and the detecting position is a position for charging a surface of the photosensitive member by the charging member; a measuring device that measures time; and a correcting device that performs a correction according to a variation of a light emission position of the light emitter from a reference light emission position, wherein the measuring device measures a time interval from a time when a latent image for detection is formed on the photosensitive member by the light emitter to a time when the latent image for detection reaches the detecting position and is detected by the detector, wherein the correcting device performs the correction based on the time interval measured by the measuring device, and wherein the latent image for detection, which is formed on the photosensitive member at the reference light emission position by the light emitter, moves from the reference light emission position to the detecting position as the rotation member rotates an integer number of times.