| 摘要 |
With an electrophotographic image forming apparatus which forms an image by using a plurality of light emitting elements, since a photodiode (PD) (214) is disposed in the vicinity of the plurality of light emitting elements and, therefore, the PD 214 also receives a laser beam emitted only by a bias current during the APC period, setting a bias current based on a result of light amount detection by the PD does not result in a bias current setting with sufficient accuracy. To solve this issue, an electrophotographic image forming apparatus forms an electrostatic latent image pattern on a photosensitive drum, and controls the value of the bias current set for a first light emitting element based on the potential of the electrostatic latent image pattern detected by a potential sensor 212 so that the value of the bias current for the first light emitting element comes close to a minimum value of the drive current supplied to the first light emitting element to form the electrostatic latent image. |
