Patent ID: 8203585

Claim:
An image forming apparatus comprising: a light source that emits a laser beam; a separating unit that separates the laser beam emitted from the light source into a first laser beam for measuring a light intensity and a second laser beam for scanning a photosensitive element to form image data; a first photoelectric converting unit that measures a light intensity of the first laser beam, and outputs a first voltage depending on the light intensity of the first laser beam; a second photoelectric converting unit that measures a light intensity of the second laser beam, and outputs a second voltage depending on the light intensity of the second laser beam; and a control unit that executes a first light-intensity correction for correcting the light intensity of the second laser beam based on a current correction value and a drive current, the current correction value being a value used for correcting a light intensity of the laser beam based on the first voltage and the second voltage, and the drive current being a current preliminarily-set with respect to the laser beam to cause the light source to emit the laser beam.