A color image forming apparatus including an image forming means, wherein the image forming means includes a rotating photosensitive member (22a-d), a charging means (23a-d) configured to charge the photosensitive member (22a-d), a light irradiation means (20a-d) configured to perform light irradiation to form an electrostatic latent image on the photosensitive member (22a-d), a development means (25a-d) configured to apply toner to the electrostatic latent image to form a toner image on the photosensitive member (22a-d), and a transfer means (26a-d) configured to transfer the toner image adhering to the photosensitive member onto a belt, the color image forming apparatus comprising: a pre-exposure means (28a-d) configured to be arranged on the downstream side of the transfer means (26a-d) and to irradiate the photosensitive member surface with light before the photosensitive member surface is charged by the charging means (23a-d); a forming means configured to control the light irradiation means (20a-d) to form an electrostatic latent image for color misregistration correction on the photosensitive member; and a power supply means (43a-d) of the charging means (23a-d) associated with the photosensitive member; characterised by the color image forming apparatus further comprising: a detection means configured to detect an output of the power supply means (43a-d) when the electrostatic latent image for color misregistration correction that is formed on the photosensitive member passes through a position facing the charging means (23a-d); a color misregistration correction control means configured to perform, based on the result of detection by the detection means, color misregistration correction control so as to return a color misregistration state to a reference state; and a light amount control means configured to control such that the pre-exposure means (28a-d) has a decreased light emission amount when the electrostatic latent image for color misregistration correction passes through a position facing the pre-exposure means (28a-d) and before the electrostatic latent image for color misregistration correction passes through the position facing the charging means (23a-d). a pre-exposure means (28a-d) configured to be arranged on the downstream side of the transfer means (26a-d) and to irradiate the photosensitive member surface with light before the photosensitive member surface is charged by the charging means (23a-d); a forming means configured to control the light irradiation means (20a-d) to form an electrostatic latent image for color misregistration correction on the photosensitive member; and a power supply means (43a-d) of the charging means (23a-d) associated with the photosensitive member; characterised by the color image forming apparatus further comprising: a detection means configured to detect an output of the power supply means (43a-d) when the electrostatic latent image for color misregistration correction that is formed on the photosensitive member passes through a position facing the charging means (23a-d); a color misregistration correction control means configured to perform, based on the result of detection by the detection means, color misregistration correction control so as to return a color misregistration state to a reference state; and a light amount control means configured to control such that the pre-exposure means (28a-d) has a decreased light emission amount when the electrostatic latent image for color misregistration correction passes through a position facing the pre-exposure means (28a-d) and before the electrostatic latent image for color misregistration correction passes through the position facing the charging means (23a-d). a detection means configured to detect an output of the power supply means (43a-d) when the electrostatic latent image for color misregistration correction that is formed on the photosensitive member passes through a position facing the charging means (23a-d); a color misregistration correction control means configured to perform, based on the result of detection by the detection means, color misregistration correction control so as to return a color misregistration state to a reference state; and a light amount control means configured to control such that the pre-exposure means (28a-d) has a decreased light emission amount when the electrostatic latent image for color misregistration correction passes through a position facing the pre-exposure means (28a-d) and before the electrostatic latent image for color misregistration correction passes through the position facing the charging means (23a-d).