Patent ID: 8891984

Claim:
A color image forming apparatus comprising image forming units for each color, each of the image forming units including a photosensitive member driven to rotate, a charge section for charging the photosensitive member, a light emission section for emitting light to form an electrostatic latent image on the photosensitive member, a developing section for applying toner on the electrostatic latent image and forming a toner image on the photosensitive member, and a transfer section for transferring the toner image formed on the photosensitive member, the charge section, the developing section and the transfer section being arranged for the photosensitive member, said color image forming apparatus comprising: a power supply section that applies a voltage to the charge section, the developing section or the transfer section for each color; a detection section for detecting for each color one among an output when an electrostatic latent image for misregistration correction formed by light emitted by the light emission section passes through a portion opposing the charge section in a case where the power supply section applies a voltage to the charge section, an output when the electrostatic latent image for misregistration correction passes through a portion opposing the developing section in a case where the power supply section applies a voltage to the developing section, and an output of when the electrostatic latent image for misregistration correction passes through a portion opposing the transfer section in a case where the power supply section applies a voltage to the transfer section; and a control section that performs misregistration correction control based on a detection result from the detection section.