Patent ID: 7139012

Claim:
An image forming device comprising: a first light source emitting light with an intensity; a second light source emitting light with an intensity; a light detecting section that detects light emitted from the first light source and the second light source; an image bearing member having an image forming region; a scanning unit that scans the light emitted from the first light source and the second light source on the image bearing member; a first power control section provided in association with the first light source, the first power control section controlling the intensity of light emitted from the first light source based on a first light detection signal output from the light detecting section, the first light detection signal indicating the intensity of light emitted from the first light source; a second power control section provided in association with the second light source, the second power control section controlling the intensity of light emitted from the second light source based on a second light detection signal output from the light detecting section, the second light detection signal indicating the intensity of light emitted from the first light source and the second light source; and a switching section connected to the first power control section and the second power control section, the switching section disabling one of the first power control section and the second power control section while remaining one of the first power control section and the second power control section is enabled.